问答题This project, called Mars One, aims to send a small group of people to Mars in 2022.

题目
问答题
This project, called Mars One, aims to send a small group of people to Mars in 2022.

相似考题

2.At the first sight the planet Mars does not appear very welcome to any kind of life.It has very little oxygen and water,the temperature at night is below-50~Cand winds of 100 miles per hour cause severe dust storms.However,the surface of the planet seems to show that water flowed across it some time in the past,and it is believed that there is enough ice at the poles to cover the planet with water if it melts.Although there is no life on the Mars now,some scientists think that there may have been some form of life long time ago.At that time,the planet had active volcanoes;the atmosphere was thicker and warmer;and there was water.In fact,in some ways the Mars may have been similar to the Earth,where life exists. Some people believe that the Mars could support life in the future if the right conditions were produced.The first step would be to warm the planet using certain gases which trap the Sun's heat in the planet's atmosphere.With warmth,water and carbon dioxide(二氧化碳),simple plants could begin to grow.These plants could slowly make the Mars more suitable for living.It is estimated that the whole process might take between 100,000 and 200,000 years.In the meantime,people could begin to live on the planet in special closed environments.They would provide a lot of useful information about conditions on the Mars and the problems connected with living there.Which is the best title for this passage?A.The Possibility of Life on the Mars B.Future Conditions on the Mars C.The Mars and the Earth D.A Study of the Climate of the Mars

3.At the first sight the planet Mars does not appear very welcome to any kind of life.It has very little oxygen and water,the temperature at night is below-50~Cand winds of 100 miles per hour cause severe dust storms.However,the surface of the planet seems to show that water flowed across it some time in the past,and it is believed that there is enough ice at the poles to cover the planet with water if it melts.Although there is no life on the Mars now,some scientists think that there may have been some form of life long time ago.At that time,the planet had active volcanoes;the atmosphere was thicker and warmer;and there was water.In fact,in some ways the Mars may have been similar to the Earth,where life exists. Some people believe that the Mars could support life in the future if the right conditions were produced.The first step would be to warm the planet using certain gases which trap the Sun's heat in the planet's atmosphere.With warmth,water and carbon dioxide(二氧化碳),simple plants could begin to grow.These plants could slowly make the Mars more suitable for living.It is estimated that the whole process might take between 100,000 and 200,000 years.In the meantime,people could begin to live on the planet in special closed environments.They would provide a lot of useful information about conditions on the Mars and the problems connected with living there.The author's attitude towards the possibility of life on the Mars in the future is__.A.doubtful B.positive C.negative D.uninterested

更多“问答题This project, called Mars One, aims to send a small group of people to Mars in 2022.”相关问题
  • 第1题:

    At the first sight the planet Mars does not appear very welcome to any kind of life.It has very little oxygen and water,the temperature at night is below-50~Cand winds of 100 miles per hour cause severe dust storms.However,the surface of the planet seems to show that water flowed across it some time in the past,and it is believed that there is enough ice at the poles to cover the planet with water if it melts.Although there is no life on the Mars now,some scientists think that there may have been some form of life long time ago.At that time,the planet had active volcanoes;the atmosphere was thicker and warmer;and there was water.In fact,in some ways the Mars may have been similar to the Earth,where life exists.
    Some people believe that the Mars could support life in the future if the right conditions were produced.The first step would be to warm the planet using certain gases which trap the Sun's heat in the planet's atmosphere.With warmth,water and carbon dioxide(二氧化碳),simple plants could begin to grow.These plants could slowly make the Mars more suitable for living.It is estimated that the whole process might take between 100,000 and 200,000 years.In the meantime,people could begin to live on the planet in special closed environments.They would provide a lot of useful information about conditions on the Mars and the problems connected with living there.

    Some scientists think there may have been life on the Mars in the past because__.

    A.there is no life there now
    B.there is a large amount of water at the poles
    C.the Mars may be able to support life in the future
    D.conditions may have been similar to those on the Earth

    答案:D
    解析:
    第一段大意是:人们最初对火星的印象是火星上不可能有生命。因为几乎没有氧气和水,并且夜间温度低于-50°C,同时还有每小时l00英里的风速引起的严重的沙尘暴。然而星球的表面却告诉我们,过去的某个时段水曾经从这里流过。人们相信极地有足够的冰,一旦融化便可覆盖整个星球。虽然现在火星上没有生命,但在过去很久很久以前,生命很有可能存在过。由此可看出,生命所需的条件——水和氧——在火星上和在地球上是相似的。所以选项D正确。而选项B说火星上有水是不对的。火星的极地有冰,只有当冰融化后才能使整个星球有水。

  • 第2题:

    共用题干
    第一篇

    An Expensive Mistake

    Is there water on the planet Mars? Is there life on Mars?Was there ever life on Mars?Scientists from
    NASA wanted to know the answers to tliese questions.They built a spacecraft to travel around Mars and get
    informnation.The spacecraft was called the Mars Climate orbiter.
    The Mars Climate Orbiter left for Mars iii December 1998.The trip took nine and a half months.At first,
    everything was fine.However.when the Orbiter got near Mars,something terrible happened.The spacecraft
    didn't go to the right place.It went too close to Mars.it was too hot for the Orbiter there.The spacecraft
    couldn't function correctly.Suddenly,it stopped sending messages to NASA.The Orbiter was lost.
    How could this terrible thing happen? How did the Orbiter get closer to Mars than the scientists
    planned? Finally,they found the anlswer. Two teams of scientists worked together on the Orbiter. One team
    was in England,and one teann was in the United States.There were many similarities in the way they
    worked,but there was one important difference:The teams used different guidelines for measuring things.The
    United States team used the metric systcnni(公制).The oilier team used the English system.
    Because they used different systems,the scientists made a mathematical mistake.The Orbiter's orbit
    (the shape and pattern of its path)around Mars was not correct.The scientists put the Orbiter on the wrong
    path.The Orbiter got too close amid too hot,and it stopped functioning.

    Why didn'tanybody see the mistake before it was too late?Many things contributed to the problem.
    One thing was that NASA scientists and mathematicians were working on two other spacecrafts at the same
    time.This was a challenge,and they were very tired from working long hours.
    The Mars Climate Orbiter cost $94 million to build.It also cost a lot of money to try to find the lost Or-
    biter in space.In addition,NASA's research on the cause of the problem was very expensive.This wasn't
    the first time that two different measurement systems caused mistakes in scientific projects.However,the
    Mars Climate Orbiter was definitely the most expensive mistake of all!

    NASA built the Mars Climate Orbiter to get information about_______.
    A:the size of Mars
    B:possible life on Mars
    C:the shape of Mars
    D:the atmosphere of Mars

    答案:B
    解析:
    文章第一段以三个问句开头:“火星上有水吗?"“火星上有生命吗?"“火星上有过生命吗?”接着指出NASA的科学家们想知道这些问题的答案,他们建造了航天飞船环绕火星飞行来获得信息。故选B。
    由文章第二段第二句话可知,飞船从地球到火星的旅程花费了九个半月的时间,故选B。
    由文章第二段第三、四句话“Atfirst,everythingwasfine.However,whentheOrbitergotnearMars,somethingterriblehappened.”可知飞船是在接近火星时出现问题的。
    由文章第三段和第四段可知,来自英国和美国的两组科学家共同负责飞船的工作,他们在做计算工作时采用了不同的计算准则。这造成计算数据出错,导致飞船绕火星飞行的轨道出现偏差。故选D。
    由文章倒数第二段可知,科学家们没能发现错误的其中一个原因是NASA的科学家和数学家们同时还要负责另外两个航天器的工作,长时间的工作使他们非常疲惫。故选C。

  • 第3题:

    共用题干
    第一篇

    An Expensive Mistake

    Is there water on the planet Mars? Is there life on Mars?Was there ever life on Mars?Scientists from
    NASA wanted to know the answers to tliese questions.They built a spacecraft to travel around Mars and get
    informnation.The spacecraft was called the Mars Climate orbiter.
    The Mars Climate Orbiter left for Mars iii December 1998.The trip took nine and a half months.At first,
    everything was fine.However.when the Orbiter got near Mars,something terrible happened.The spacecraft
    didn't go to the right place.It went too close to Mars.it was too hot for the Orbiter there.The spacecraft
    couldn't function correctly.Suddenly,it stopped sending messages to NASA.The Orbiter was lost.
    How could this terrible thing happen? How did the Orbiter get closer to Mars than the scientists
    planned? Finally,they found the anlswer. Two teams of scientists worked together on the Orbiter. One team
    was in England,and one teann was in the United States.There were many similarities in the way they
    worked,but there was one important difference:The teams used different guidelines for measuring things.The
    United States team used the metric systcnni(公制).The oilier team used the English system.
    Because they used different systems,the scientists made a mathematical mistake.The Orbiter's orbit
    (the shape and pattern of its path)around Mars was not correct.The scientists put the Orbiter on the wrong
    path.The Orbiter got too close amid too hot,and it stopped functioning.

    Why didn'tanybody see the mistake before it was too late?Many things contributed to the problem.
    One thing was that NASA scientists and mathematicians were working on two other spacecrafts at the same
    time.This was a challenge,and they were very tired from working long hours.
    The Mars Climate Orbiter cost $94 million to build.It also cost a lot of money to try to find the lost Or-
    biter in space.In addition,NASA's research on the cause of the problem was very expensive.This wasn't
    the first time that two different measurement systems caused mistakes in scientific projects.However,the
    Mars Climate Orbiter was definitely the most expensive mistake of all!

    What caused the Orbiter's problem?
    A:Scientists used wrong guidelines of mathematics.
    B:Scientists used wrong building materials.
    C:Scientists used different operating systems.
    D:Scientists used different measurement systems.

    答案:D
    解析:
    文章第一段以三个问句开头:“火星上有水吗?"“火星上有生命吗?"“火星上有过生命吗?”接着指出NASA的科学家们想知道这些问题的答案,他们建造了航天飞船环绕火星飞行来获得信息。故选B。
    由文章第二段第二句话可知,飞船从地球到火星的旅程花费了九个半月的时间,故选B。
    由文章第二段第三、四句话“Atfirst,everythingwasfine.However,whentheOrbitergotnearMars,somethingterriblehappened.”可知飞船是在接近火星时出现问题的。
    由文章第三段和第四段可知,来自英国和美国的两组科学家共同负责飞船的工作,他们在做计算工作时采用了不同的计算准则。这造成计算数据出错,导致飞船绕火星飞行的轨道出现偏差。故选D。
    由文章倒数第二段可知,科学家们没能发现错误的其中一个原因是NASA的科学家和数学家们同时还要负责另外两个航天器的工作,长时间的工作使他们非常疲惫。故选C。

  • 第4题:

    共用题干
    第三篇

    Citizen Scientists

    Understanding how nature responds to climate change will require monitoring key life cycle events一
    flowering,the appearance of leaves and the first frog calls of the spring一all around the world.But ecologists
    can't be everywhere so they're turning to non-scientists,sometimes called citizen scientists,for help.
    Climate scientists are not present everywhere.Because there are so many places in the world and not
    enough scientists to observe all of them,they're asking for your help in observing signs of climate change
    across the world.The citizen scientist movement encourages ordinary people to observe a very specific

    research interest一birds,trees,flowers budding,etc.and send their observations to a giant database to be
    observed by professional scientists.This helps a small number of scientists track a large amount of data that they
    would never be able to gather on their own.Much like citizen journalists helping large publications cover a
    hyper-local beat,citizen scientists are ready for the conditions where they live in.All that's needed to become
    one is a few minutes each day or each week to gather data and send them in.
    A group of scientists and educators launched an organization last year called the National Phenology
    Network."Phenology"is what scientists call the study of the timing of events in nature.
    One of the group's first efforts relies on scientists and non-scientists alike to collect data about plant
    flowering and leafing eveiy year.The program,called Project BudBurst,collects life cycle data on a variety of
    common plants from across the United States.People participating in the project一which is open to every-
    one一record their observations on the Project BudBurst website.
    "People don't have to be plant experts一they just have to look around and see what's in their neighbor-
    hood,"says Jennifer Schwartz,an education consultant with the project."As we collect these data,we'll be
    able to make an estimate of how plants and communities of plants and animals will respond as the climate
    changes."

    Ecologists turn to non-scientist citizens for help because they need them_________.
    A:to provide their personal life cycles
    B:to observe the life cycle of plants
    C:to collect data of the life cycle of living things
    D:to teach children knowledge about climate change

    答案:C
    解析:

    短文第一段提到科学家们不可能观察每一个地方的气候变化的现象,所以邀请普通人 为他们观察、收集信息。
    短文第二段讲到,平民科学家运动鼓励普通人根据自己的兴趣来观察某一个特定的方 面,并把他们的观察结果发送到一个巨大的数据库来供专业科学家研究。结合选项,可知答案 为B。
    短文第二段最后一句话的后半部分“所要做的仅仅是每天或每周抽出几分钟的时间来 收集数据并发送到数据库”可知,"one”是针对citizen scientist来说的。
    全文都在讲述普通人参与科学项目的研究,只有A选项不符合题意。其他选项都能在 文中找到。
    短文最后一段指出,通过收集数据,我们就能够估算出气候变化对植物和生物群落会 有怎样的影响。所以选D。第5部分:补全短文

  • 第5题:

    共用题干
    第三篇

    Citizen Scientists

    Understanding how nature responds to climate change will require monitoring key life cycle events一
    flowering,the appearance of leaves and the first frog calls of the spring一all around the world.But ecologists
    can't be everywhere so they're turning to non-scientists,sometimes called citizen scientists,for help.
    Climate scientists are not present everywhere.Because there are so many places in the world and not
    enough scientists to observe all of them,they're asking for your help in observing signs of climate change
    across the world.The citizen scientist movement encourages ordinary people to observe a very specific

    research interest一birds,trees,flowers budding,etc.and send their observations to a giant database to be
    observed by professional scientists.This helps a small number of scientists track a large amount of data that they
    would never be able to gather on their own.Much like citizen journalists helping large publications cover a
    hyper-local beat,citizen scientists are ready for the conditions where they live in.All that's needed to become
    one is a few minutes each day or each week to gather data and send them in.
    A group of scientists and educators launched an organization last year called the National Phenology
    Network."Phenology"is what scientists call the study of the timing of events in nature.
    One of the group's first efforts relies on scientists and non-scientists alike to collect data about plant
    flowering and leafing eveiy year.The program,called Project BudBurst,collects life cycle data on a variety of
    common plants from across the United States.People participating in the project一which is open to every-
    one一record their observations on the Project BudBurst website.
    "People don't have to be plant experts一they just have to look around and see what's in their neighbor-
    hood,"says Jennifer Schwartz,an education consultant with the project."As we collect these data,we'll be
    able to make an estimate of how plants and communities of plants and animals will respond as the climate
    changes."

    What is the final purpose of Project BudBurst?
    A:To study when plants will have their first buds.
    B:To find out the types of plants in the neighborhood.
    C:To collect life cycle data on a variety of common plants from across the United States.
    D:To investigate how plants and animals will respond as the climate changes.

    答案:D
    解析:

    短文第一段提到科学家们不可能观察每一个地方的气候变化的现象,所以邀请普通人 为他们观察、收集信息。
    短文第二段讲到,平民科学家运动鼓励普通人根据自己的兴趣来观察某一个特定的方 面,并把他们的观察结果发送到一个巨大的数据库来供专业科学家研究。结合选项,可知答案 为B。
    短文第二段最后一句话的后半部分“所要做的仅仅是每天或每周抽出几分钟的时间来 收集数据并发送到数据库”可知,"one”是针对citizen scientist来说的。
    全文都在讲述普通人参与科学项目的研究,只有A选项不符合题意。其他选项都能在 文中找到。
    短文最后一段指出,通过收集数据,我们就能够估算出气候变化对植物和生物群落会 有怎样的影响。所以选D。第5部分:补全短文

  • 第6题:

    共用题干
    An Expensive Mistake
    Is there water on the planet Mars?Is there life in Mars? Was there ever life on Mars? Scientists from NASA wanted to know the answers to these questions.They built a space-craft to travel around Mars and get information.The spacecraft was called the Mars Climate Orbiter.
    The Mars Climate Orbiter left for Mars in December 1998.The trip took nine and a half months.At first,everything was fine.However,when the Orbiter got near Mars,something terrible happened.The spacecraft didn't go to the right place.It went too close to Mars.It was too hot for the Orbiter there.The spacecraft couldn't function correctly.Suddenly,it stopped sending messages to NASA.The Orbiter was lost.
    How could this terrible thing happen? How did the Orbiter get closer to Mars than the scientists planned?Finally,they found the answer.Two teams of scientists worked together on the Orbiter.One team was in England,and one team was in United States.There were many similarities in the way they worked,but there was one important difference:The teams used different guidelines for measuring things.The United States team used the metric system(公制).The other team used the English system.
    Because they used different systems,the scientists made a mathematical mistake.The Orbiter's orbit(the shape and pattern of its path)around Mars was not correct.The scientists put the Orbiter on the wrong path.The Orbiter got too close and too hot.And it stopped functioning.
    Why didn't anybody see the mistake before it was too late? Many things contributed to the problem.One thing was that NASA scientists and mathematicians were working on two other spacecrafts at the same time.This was a challenge,and they were very tired from working long hours.
    The Mars Climate Orbiter cost$94 million to build.It also cost a lot of money to try to find the lost Orbiter in space.In addition,NASA's research on the cause of the problem was very expensive.This wasn't the first time that two different measurement systems caused mistakes in scientific projects.However,the Mars Climate Orbiter was definitely the most expensive mistake of all!

    How long did it take the Orbiter to get close to Mars?
    A:One year.
    B:Less than one year.
    C:About two and a half year.
    D:More than three years.

    答案:B
    解析:
    题干意为“NASA建造火星气候轨道器以获取关于火星上可能有生命的信息。”短文第一段提到,“火星上有水吗? 火星上有生命吗? 曾经是否有生命? NASA的科学家想要知道这些问题的答案。他们建造了航天器绕火星飞行以获取这些信息。航天器的名字叫火星气候轨道器。”故选A。
    题干意为“轨道器需要多长时间接近火星? 不到一年。”短文第二段前两句提到,火星气候轨道器于1998年12月向火星进发,旅程用了九个半月。故此选B。
    题干意为“轨道器什么时候开始出现问题? 当它接近火星的时候。”短文第二段第三、四句提到,起初一切正常,然而当轨道器接近火星的时候,糟糕的事情发生了。故选B。
    题干意为“是什么导致了轨道器的问题?科学家用了不同的测量系统。”短文第三段提出,有两组科学家一起开展关于轨道器的工作,一组在英国,另一组在美国。这两组科学家的工作方式大部分是相似的,但有一点重要的不同,那就是他们使用了不同的测量体系,美国组用的是公制,而英国组用的是英制,故选D。
    题干意为“为什么NASA的科学家没有在轨道器前往火星前发现问题?”短文第五段第三、四句指出,其中的一个原因是,NASA的科学家和数学家在研究火星气候轨道器的同时还在研究另外两台航天器,长时间的工作让他们非常疲惫。故选D。

  • 第7题:

    共用题干
    第二篇

    Citizen Scientists

    Understanding how nature responds to climate change will require monitoring key life cycle events一
    flowering,the appearance of leaves,the first frog calls of the spring一all around the world.But ecologists
    (生态学家)can' t be everywhere so they' re turning to non-scientists, sometimes called citizen scientists,
    for help.
    Climate scientists are not present everywhere.Because there are so many places in the world and not
    enough scientists to observe all of them,they're asking for your help in observing signs of c1imat。 ehang,
    across the world.The citizen scientist movement encourages ordinary people to observe "very specific
    research interest一birds,trees,flowers budding,etc. and send their observations to a giant database
    (数据库)to be observed by professional scientists. This helps a small number of scientists track a large
    amount of data that they would never be able to gather on their own.Much like citizen journalists helping
    large publications cover a hyper-local beat,citizen scientists are ready for the conditions where they live.All
    that's needed to become one is a few minutes each day or each week to gather data and send it in.
    A group of scientists and educators launched an organization last year called the National Phonology
    Network."Phenology"is what scientists eni1 the study of the timing of events in nature.
    One of the group's first efforts relies on scientists and non-scientists alike to collect data about plant
    flowering and leafing every year. The program,called Project BudBurst,collects life eyele data on a variety
    of common plants from across the United States.People participating in the project一which is open to every-
    one一record their observations on the Project BudBurst website.
    "People don't have to be plant experts一they just have to look around and see what's in their
    neighborhood,"says Jennifer Schwartz,an education consultant with the project."As we collect this data,
    we'll be able to make an estimate of how p'ants and communities(生物群落)of plants and animals will re-
    spond as the climate changes."

    What are citizen scientists asked to do?
    A:To develop a specific research interest and become professional scientists.
    B:To send their research observations to a professional database.
    C:To increase their knowledge about climate change.
    D:To keep a record of their research observations.

    答案:B
    解析:
    由第二段可知,科学家是在请普通公民观察气候变化的某些迹象并将数据传到指定网址上,故选Co
    由第二段第三句“…encourages ordinary people to observe a very spccific research interesl—…send their observations to a giant database to be observed by professional scientists."可知应选B。
    仔细看该词所在句的前一句“Much like citizen journalists.., citizen scientists are ready for...”可知,one指one of citizen scientists。所以正确答案为B。
    文章倒数第二段提到“People participating in the project一which ie open to everyone",山 此可知这个计划向所有人开放,因此A为本题答案。
    文章第一句“Understanding how nature responds to climate change"和文章最后一句“…to make an estimatc of how planu and communities of plants and animals will respond as the climate changes.”都给出了研究的目的,所以D为正确答案。第三篇 本文主要介绍了撒哈扛沙漠的地理位置、气候权况、农业和交通运输状况

  • 第8题:

    共用题干
    第二篇

    Citizen Scientists

    Understanding how nature responds to climate change will require monitoring key life cycle events一
    flowering,the appearance of leaves,the first frog calls of the spring一all around the world.But ecologists
    (生态学家)can' t be everywhere so they' re turning to non-scientists, sometimes called citizen scientists,
    for help.
    Climate scientists are not present everywhere.Because there are so many places in the world and not
    enough scientists to observe all of them,they're asking for your help in observing signs of c1imat。 ehang,
    across the world.The citizen scientist movement encourages ordinary people to observe "very specific
    research interest一birds,trees,flowers budding,etc. and send their observations to a giant database
    (数据库)to be observed by professional scientists. This helps a small number of scientists track a large
    amount of data that they would never be able to gather on their own.Much like citizen journalists helping
    large publications cover a hyper-local beat,citizen scientists are ready for the conditions where they live.All
    that's needed to become one is a few minutes each day or each week to gather data and send it in.
    A group of scientists and educators launched an organization last year called the National Phonology
    Network."Phenology"is what scientists eni1 the study of the timing of events in nature.
    One of the group's first efforts relies on scientists and non-scientists alike to collect data about plant
    flowering and leafing every year. The program,called Project BudBurst,collects life eyele data on a variety
    of common plants from across the United States.People participating in the project一which is open to every-
    one一record their observations on the Project BudBurst website.
    "People don't have to be plant experts一they just have to look around and see what's in their
    neighborhood,"says Jennifer Schwartz,an education consultant with the project."As we collect this data,
    we'll be able to make an estimate of how p'ants and communities(生物群落)of plants and animals will re-
    spond as the climate changes."

    What is the final purpose of Project BudBurst?
    A:To study when plants will have their first buds.
    B:To find out the types of plants in the neighborhood.
    C:To collect life cycle data on"variety of common plants from across the United States.
    D:To investigate how plants and animalsw lll respond as the climate changes.

    答案:D
    解析:
    由第二段可知,科学家是在请普通公民观察气候变化的某些迹象并将数据传到指定网址上,故选Co
    由第二段第三句“…encourages ordinary people to observe a very spccific research interesl—…send their observations to a giant database to be observed by professional scientists."可知应选B。
    仔细看该词所在句的前一句“Much like citizen journalists.., citizen scientists are ready for...”可知,one指one of citizen scientists。所以正确答案为B。
    文章倒数第二段提到“People participating in the project一which ie open to everyone",山 此可知这个计划向所有人开放,因此A为本题答案。
    文章第一句“Understanding how nature responds to climate change"和文章最后一句“…to make an estimatc of how planu and communities of plants and animals will respond as the climate changes.”都给出了研究的目的,所以D为正确答案。第三篇 本文主要介绍了撒哈扛沙漠的地理位置、气候权况、农业和交通运输状况

  • 第9题:

    简述MARS的原理。


    正确答案:MARS即人工肝,应用现有的透析技术,模拟肝脏解毒过程,通过MARS膜和白蛋白透析选择性的有效清除体内代谢毒素,纠正水、电解质和酸碱平衡。

  • 第10题:

    问答题
    Is There Life on Mars?  The American space agency, NASA (the National Aeronautics and Space Administration), has drawn up a short list of ten research projects that will form the basic of an ambitious program to explore the planet Mars in a mission scheduled for launch in 2007. Scientists are being asked to use their ingenuity to devise novel ways to explore the red planet using intelligent robots and probes that might perhaps answer the biggest question of all—-is there life on Mars?  NASA chose the ten projects from a list of 43 hopefuls. It has included missions for returning samples of Martian dust and gas to Earth, networks of small landers, orbiting constellations of microprobes and a rover that would try to date the precise age of rocks and soils. The ten concepts are part of the Mars Scout program to be launched in six years. This follows a decade of the most intensive interest in Mars since the two Viking probes of 1976 which sent back eerie images of the Martian landscape some 400 million kilometers away.  But the history of Mars exploration is littered with failure—more than half of the 30 missions to date have ended in fiasco. It was NASA’s announcement in August 1996 of possible signs of life  in a Martian meteorite which had fallen to Earth that rekindled intense interest in Earth’s nearest neighbor. It was assumed that liquid water had once flowed on Mars and an ancient atmosphere might have supported living organisms. However, opposing camps of scientists bitterly disputed NASA’s evidence for primitive life-forms in the Martian meteorite ALH84001. This led to the conclusion that the only way of finding out whether life ever existed on Mars is to go there and have a look.  NASA planned a bold series of increasingly complex missions involving the launch of a couple of space probes every year for a dozen years. One of the most successful so far was the shoe-box-sized So-journer rover which thrilled a world Internet audience when it was wheeled out in 1997. Since then, however, NASA has suffered a series of setbacks.  In September 1999 its Mars Climate Orbiter was lost as a failed rocket bum plunged it into the Martian atmosphere. NASA blamed it on one of its team using imperial units and another using metric. Three months later, NASA lost contact with its Polar Lander as it approached touchdown on the frozen South Pole of the planet. Space commentators muttered darkly about Mars being a cosmic equivalent of the Bermuda triangle.  The year of 2001 saw the successful completion of the Global Surveyor mission, an orbiting probe that took pictures of what some scientists say are channels in the dust where water may still occasionally flow from underground well. More recently, the Mars Odyssey probe was launched without hitch and is due to arrive in 2008.  Meanwhile, the European Space Agency is planning its own visit to the red planet with the launch of its Mars Express mission scheduled for take-off in .June 2003. Britain is designated to take a lead role in the project with the Beagle 2 Lander, a small craft, the size of a kitchen sink designed to shuffle over the Martian landscape taking soil and rock samples, analyzing them for signs of life and transmitting the data back to Earth. Beagle 2—framed after the ship that carded Charles Darwin on his voyage of discovery—will weigh just 60 kilograms and will cost about US $225,000 to build, a fraction of the cost of building the Viking space probes more than 25 years ago.  Beagle 2 will look for water, minerals and organic matter. Although it will reach Mars before NASA’s Scout mission is even launched, it will be considerably less sophisticated in tea’ms of analytical technology. The focus now for NASA is on what instruments and robots to put on the Mars Scout mission in six years. Ed Weiler, NASA’s associate administrator for space science, had to decide on a top ten to concentrate NASA’s limited resources.  Each project is to receive a grant of $150,000 to see them through the next six months of development. It all has to come out of a total project budget capped at $300 million. These Scout concepts embody the spirit I first thought about more than a year ago; and will enable us to explore the diversity of Mars in new ways, Dr Weiler said.

    正确答案: 【参考译文】
    火星上有生物吗? 美国航天机构——国家航空航天局(NASA)已制定出一个包括10个研究项目的简表,这些研究是针对一项雄心勃勃的计划而制定的,该计划将在2007年的一次发射任务中对火星进行探测。科学家们纷纷发挥他们的创造性,寻求新思路,利用智能机器人和探测器来探索这颗红色的行星。“火星上有生物吗?”我们也许能给这个首要问题找到答案。
    美国国家航空及太空总署从43个可行计划中挑选出这10个项目。其中包括:将火星尘埃和气体的样品带回地球,建立小型登陆器网,将微型探测器卫星群送入轨道,以及建造一台能精确确认岩石和土壤年份的探测车。这10个“创新项目”是今后六年将开展的“火星探测计划”的组成部分。1976年,两只“海盗”探测器发回了距地球4亿公里以外火星景观的怪异图像,自此,人们就对火星产生了浓厚的兴趣。“火星探测计划”是这十年来浓厚兴趣的延续。
    然而,火星探测的历史也经历了重重的失败。迄今为止,30多次的探测有一多半均以失败告终。1996年8月,美国国家航空及太空总署宣布,落到地球上的火星陨石中可能存在生命迹象,这一发现重新燃起了人们对火层——这颗离地球最近的星球一的浓厚兴趣。人们推断火星上也曾流淌过河流,远古的大气下可能也曾有生命体的存在。然而,反对阵营的科学家们很不认同火星陨石ALH84001中存在初级生物的证据。因此,要想知道火星上是否存在过生物,唯一的办法就是到那里去看一下。
    美国国家航空及太空总署大胆出台了一系列日益复杂的计划,包括连续12年每年发射几个太空探测器。“寄居者”探测器是迄今为止最为成功的尝试,它只有一个鞋盒大小。它于1997年的面世震惊了全世界的互联网观众。但是从那以后,美国国家航空及太空总署就遭遇了一系列的挫折。
    1999年9月,由于运载火箭出现事故,火星气候轨道探测器在燃烧后消失在火星的大气层中。美国国家航空及太空总署将这次事故归咎于使用了英制和公制两种不同的单位。三个月后,美国国家航空及太空总署又与其在冰冻的火星南极着陆的“极地登陆者”号探测器失去了联系。当时,太空评论员们丧气地评价说:“火星简直就是宇宙中的百慕大。”
    2001年,“星球探测者”号探测器成功完成了使命。它在沿轨道飞行的过程中拍下了一些照片。一些科学家们称他们从中看到了干涸的水渠,地下的泉水也许依然在流淌。较近时候,“火星流浪者”号探测器成功发射,并将于2008年抵达火星。
    与此同时,欧洲航天局也在筹划着对火星的访问。按日程安排,“火星特快”号探测器将于2003年6月发射。英国推出“猎犬2号”登陆器,从而占据了领先地位。“猎犬2号”是一种小型飞船,大概有厨房洗涤槽大小。它可以在火星表面移动,搜集土壤和岩石标本,分析其中的生命迹象并将分析资料发回地球。“猎犬2号”是以查尔斯·达尔文曾经乘坐过的考察船而命名,它的重量只有60千克,制造费用约为22.5万美元,与25年前的“海盗”太空探测器相比,只占其成本的很小一部分。
    “猎犬2号”将在火星上寻找水、矿物和有机物。尽管它将在美国国家航空及太空总署发射“观察者”号之前就到达火星,但就分析技术而言,它还不够精密。美国国家航空及太空总署目前的工作重心是:在六年内确定要把哪些仪器和机器人装载到“火星观察者”号上。为能够集中利用总署的有限资源,美国国家航空及太空总署中主管太空科学的副局长埃德·韦勒只得将注意力集中到以上提到的10个研究项目上。
    每个项目将会得到l5万美元的资助,确保其在今后六个月的开发。未来项目总额预计会达到3亿美元。韦勒博士说,“‘观察者号’的这些构想体现了我一年多以前的理念,它们将为我们提供新的方式来探测火星的多变情况。”
    解析: 暂无解析

  • 第11题:

    单选题
    According to Bas Lansdorp, which of the following is NOT TRUE?
    A

    For a one-way trip to Mars, all the technology exists.

    B

    He could not come up with the fund for Mars One.

    C

    We humans have the rockets to send people to Mars.

    D

    We humans have the equipment to land on Mars.


    正确答案: C
    解析:

  • 第12题:

    问答题
    Why is the book “Kids Are From Mars, Parents Are From Venus” mentioned in the third paragraph?

    正确答案: Because it has the same theme with the book written by the two girls.
    解析:
    推断题由题干定位到文章第三段。该段主要介绍了一本名为Breaking the Code的书,倒数第二句提到,这本书类似于另一本名为Kids Are From Mars, Parents Are From Venus的书,在于它们均解释了青少年的语言和行为,由此可见两本书的相似之处在于其共同的主题。

  • 第13题:

    共用题干
    第三篇

    Citizen Scientists

    Understanding how nature responds to climate change will require monitoring key life cycle events一
    flowering,the appearance of leaves and the first frog calls of the spring一all around the world.But ecologists
    can't be everywhere so they're turning to non-scientists,sometimes called citizen scientists,for help.
    Climate scientists are not present everywhere.Because there are so many places in the world and not
    enough scientists to observe all of them,they're asking for your help in observing signs of climate change
    across the world.The citizen scientist movement encourages ordinary people to observe a very specific

    research interest一birds,trees,flowers budding,etc.and send their observations to a giant database to be
    observed by professional scientists.This helps a small number of scientists track a large amount of data that they
    would never be able to gather on their own.Much like citizen journalists helping large publications cover a
    hyper-local beat,citizen scientists are ready for the conditions where they live in.All that's needed to become
    one is a few minutes each day or each week to gather data and send them in.
    A group of scientists and educators launched an organization last year called the National Phenology
    Network."Phenology"is what scientists call the study of the timing of events in nature.
    One of the group's first efforts relies on scientists and non-scientists alike to collect data about plant
    flowering and leafing eveiy year.The program,called Project BudBurst,collects life cycle data on a variety of
    common plants from across the United States.People participating in the project一which is open to every-
    one一record their observations on the Project BudBurst website.
    "People don't have to be plant experts一they just have to look around and see what's in their neighbor-
    hood,"says Jennifer Schwartz,an education consultant with the project."As we collect these data,we'll be
    able to make an estimate of how plants and communities of plants and animals will respond as the climate
    changes."

    In"All that's needed to become one…(Paragraph 2)",what does the word"one"stand for?
    A:A citizen journalist.
    B:A citizen scientist?
    C:A scientist.
    D:A citizen.

    答案:B
    解析:

    短文第一段提到科学家们不可能观察每一个地方的气候变化的现象,所以邀请普通人 为他们观察、收集信息。
    短文第二段讲到,平民科学家运动鼓励普通人根据自己的兴趣来观察某一个特定的方 面,并把他们的观察结果发送到一个巨大的数据库来供专业科学家研究。结合选项,可知答案 为B。
    短文第二段最后一句话的后半部分“所要做的仅仅是每天或每周抽出几分钟的时间来 收集数据并发送到数据库”可知,"one”是针对citizen scientist来说的。
    全文都在讲述普通人参与科学项目的研究,只有A选项不符合题意。其他选项都能在 文中找到。
    短文最后一段指出,通过收集数据,我们就能够估算出气候变化对植物和生物群落会 有怎样的影响。所以选D。第5部分:补全短文

  • 第14题:

    共用题干
    第三篇

    Citizen Scientists

    Understanding how nature responds to climate change will require monitoring key life cycle events一
    flowering,the appearance of leaves and the first frog calls of the spring一all around the world.But ecologists
    can't be everywhere so they're turning to non-scientists,sometimes called citizen scientists,for help.
    Climate scientists are not present everywhere.Because there are so many places in the world and not
    enough scientists to observe all of them,they're asking for your help in observing signs of climate change
    across the world.The citizen scientist movement encourages ordinary people to observe a very specific

    research interest一birds,trees,flowers budding,etc.and send their observations to a giant database to be
    observed by professional scientists.This helps a small number of scientists track a large amount of data that they
    would never be able to gather on their own.Much like citizen journalists helping large publications cover a
    hyper-local beat,citizen scientists are ready for the conditions where they live in.All that's needed to become
    one is a few minutes each day or each week to gather data and send them in.
    A group of scientists and educators launched an organization last year called the National Phenology
    Network."Phenology"is what scientists call the study of the timing of events in nature.
    One of the group's first efforts relies on scientists and non-scientists alike to collect data about plant
    flowering and leafing eveiy year.The program,called Project BudBurst,collects life cycle data on a variety of
    common plants from across the United States.People participating in the project一which is open to every-
    one一record their observations on the Project BudBurst website.
    "People don't have to be plant experts一they just have to look around and see what's in their neighbor-
    hood,"says Jennifer Schwartz,an education consultant with the project."As we collect these data,we'll be
    able to make an estimate of how plants and communities of plants and animals will respond as the climate
    changes."

    What are citizen scientists asked to do?
    A:To develop a specific research interest and become professional scientists.
    B:To send their research observations to a professional database.
    C:To increase their knowledge about climate change.
    D:To keep a record of their research observations.

    答案:B
    解析:

    短文第一段提到科学家们不可能观察每一个地方的气候变化的现象,所以邀请普通人 为他们观察、收集信息。
    短文第二段讲到,平民科学家运动鼓励普通人根据自己的兴趣来观察某一个特定的方 面,并把他们的观察结果发送到一个巨大的数据库来供专业科学家研究。结合选项,可知答案 为B。
    短文第二段最后一句话的后半部分“所要做的仅仅是每天或每周抽出几分钟的时间来 收集数据并发送到数据库”可知,"one”是针对citizen scientist来说的。
    全文都在讲述普通人参与科学项目的研究,只有A选项不符合题意。其他选项都能在 文中找到。
    短文最后一段指出,通过收集数据,我们就能够估算出气候变化对植物和生物群落会 有怎样的影响。所以选D。第5部分:补全短文

  • 第15题:

    共用题干
    An Expensive Mistake
    Is there water on the planet Mars?Is there life in Mars? Was there ever life on Mars? Scientists from NASA wanted to know the answers to these questions.They built a space-craft to travel around Mars and get information.The spacecraft was called the Mars Climate Orbiter.
    The Mars Climate Orbiter left for Mars in December 1998.The trip took nine and a half months.At first,everything was fine.However,when the Orbiter got near Mars,something terrible happened.The spacecraft didn't go to the right place.It went too close to Mars.It was too hot for the Orbiter there.The spacecraft couldn't function correctly.Suddenly,it stopped sending messages to NASA.The Orbiter was lost.
    How could this terrible thing happen? How did the Orbiter get closer to Mars than the scientists planned?Finally,they found the answer.Two teams of scientists worked together on the Orbiter.One team was in England,and one team was in United States.There were many similarities in the way they worked,but there was one important difference:The teams used different guidelines for measuring things.The United States team used the metric system(公制).The other team used the English system.
    Because they used different systems,the scientists made a mathematical mistake.The Orbiter's orbit(the shape and pattern of its path)around Mars was not correct.The scientists put the Orbiter on the wrong path.The Orbiter got too close and too hot.And it stopped functioning.
    Why didn't anybody see the mistake before it was too late? Many things contributed to the problem.One thing was that NASA scientists and mathematicians were working on two other spacecrafts at the same time.This was a challenge,and they were very tired from working long hours.
    The Mars Climate Orbiter cost$94 million to build.It also cost a lot of money to try to find the lost Orbiter in space.In addition,NASA's research on the cause of the problem was very expensive.This wasn't the first time that two different measurement systems caused mistakes in scientific projects.However,the Mars Climate Orbiter was definitely the most expensive mistake of all!

    Why didn't NASA scientists identify the problem before the Orbiter left for Mars?
    A:they didn't know the English system.
    B:they were sure of the success of the trip.
    C:they didn't get enough research funding.
    D:they were tired from working long hours.

    答案:D
    解析:
    题干意为“NASA建造火星气候轨道器以获取关于火星上可能有生命的信息。”短文第一段提到,“火星上有水吗? 火星上有生命吗? 曾经是否有生命? NASA的科学家想要知道这些问题的答案。他们建造了航天器绕火星飞行以获取这些信息。航天器的名字叫火星气候轨道器。”故选A。
    题干意为“轨道器需要多长时间接近火星? 不到一年。”短文第二段前两句提到,火星气候轨道器于1998年12月向火星进发,旅程用了九个半月。故此选B。
    题干意为“轨道器什么时候开始出现问题? 当它接近火星的时候。”短文第二段第三、四句提到,起初一切正常,然而当轨道器接近火星的时候,糟糕的事情发生了。故选B。
    题干意为“是什么导致了轨道器的问题?科学家用了不同的测量系统。”短文第三段提出,有两组科学家一起开展关于轨道器的工作,一组在英国,另一组在美国。这两组科学家的工作方式大部分是相似的,但有一点重要的不同,那就是他们使用了不同的测量体系,美国组用的是公制,而英国组用的是英制,故选D。
    题干意为“为什么NASA的科学家没有在轨道器前往火星前发现问题?”短文第五段第三、四句指出,其中的一个原因是,NASA的科学家和数学家在研究火星气候轨道器的同时还在研究另外两台航天器,长时间的工作让他们非常疲惫。故选D。

  • 第16题:

    共用题干
    An Expensive Mistake
    Is there water on the planet Mars?Is there life in Mars? Was there ever life on Mars? Scientists from NASA wanted to know the answers to these questions.They built a space-craft to travel around Mars and get information.The spacecraft was called the Mars Climate Orbiter.
    The Mars Climate Orbiter left for Mars in December 1998.The trip took nine and a half months.At first,everything was fine.However,when the Orbiter got near Mars,something terrible happened.The spacecraft didn't go to the right place.It went too close to Mars.It was too hot for the Orbiter there.The spacecraft couldn't function correctly.Suddenly,it stopped sending messages to NASA.The Orbiter was lost.
    How could this terrible thing happen? How did the Orbiter get closer to Mars than the scientists planned?Finally,they found the answer.Two teams of scientists worked together on the Orbiter.One team was in England,and one team was in United States.There were many similarities in the way they worked,but there was one important difference:The teams used different guidelines for measuring things.The United States team used the metric system(公制).The other team used the English system.
    Because they used different systems,the scientists made a mathematical mistake.The Orbiter's orbit(the shape and pattern of its path)around Mars was not correct.The scientists put the Orbiter on the wrong path.The Orbiter got too close and too hot.And it stopped functioning.
    Why didn't anybody see the mistake before it was too late? Many things contributed to the problem.One thing was that NASA scientists and mathematicians were working on two other spacecrafts at the same time.This was a challenge,and they were very tired from working long hours.
    The Mars Climate Orbiter cost$94 million to build.It also cost a lot of money to try to find the lost Orbiter in space.In addition,NASA's research on the cause of the problem was very expensive.This wasn't the first time that two different measurement systems caused mistakes in scientific projects.However,the Mars Climate Orbiter was definitely the most expensive mistake of all!

    When did the Orbiter's problem begin?
    A:Right after it left for Mars.
    B:When it got near Mars.
    C:Right after it landed on Mars.
    D:When it returned to Earth.

    答案:B
    解析:
    题干意为“NASA建造火星气候轨道器以获取关于火星上可能有生命的信息。”短文第一段提到,“火星上有水吗? 火星上有生命吗? 曾经是否有生命? NASA的科学家想要知道这些问题的答案。他们建造了航天器绕火星飞行以获取这些信息。航天器的名字叫火星气候轨道器。”故选A。
    题干意为“轨道器需要多长时间接近火星? 不到一年。”短文第二段前两句提到,火星气候轨道器于1998年12月向火星进发,旅程用了九个半月。故此选B。
    题干意为“轨道器什么时候开始出现问题? 当它接近火星的时候。”短文第二段第三、四句提到,起初一切正常,然而当轨道器接近火星的时候,糟糕的事情发生了。故选B。
    题干意为“是什么导致了轨道器的问题?科学家用了不同的测量系统。”短文第三段提出,有两组科学家一起开展关于轨道器的工作,一组在英国,另一组在美国。这两组科学家的工作方式大部分是相似的,但有一点重要的不同,那就是他们使用了不同的测量体系,美国组用的是公制,而英国组用的是英制,故选D。
    题干意为“为什么NASA的科学家没有在轨道器前往火星前发现问题?”短文第五段第三、四句指出,其中的一个原因是,NASA的科学家和数学家在研究火星气候轨道器的同时还在研究另外两台航天器,长时间的工作让他们非常疲惫。故选D。

  • 第17题:

    共用题干
    An Expensive Mistake
    Is there water on the planet Mars?Is there life in Mars? Was there ever life on Mars? Scientists from NASA wanted to know the answers to these questions.They built a space-craft to travel around Mars and get information.The spacecraft was called the Mars Climate Orbiter.
    The Mars Climate Orbiter left for Mars in December 1998.The trip took nine and a half months.At first,everything was fine.However,when the Orbiter got near Mars,something terrible happened.The spacecraft didn't go to the right place.It went too close to Mars.It was too hot for the Orbiter there.The spacecraft couldn't function correctly.Suddenly,it stopped sending messages to NASA.The Orbiter was lost.
    How could this terrible thing happen? How did the Orbiter get closer to Mars than the scientists planned?Finally,they found the answer.Two teams of scientists worked together on the Orbiter.One team was in England,and one team was in United States.There were many similarities in the way they worked,but there was one important difference:The teams used different guidelines for measuring things.The United States team used the metric system(公制).The other team used the English system.
    Because they used different systems,the scientists made a mathematical mistake.The Orbiter's orbit(the shape and pattern of its path)around Mars was not correct.The scientists put the Orbiter on the wrong path.The Orbiter got too close and too hot.And it stopped functioning.
    Why didn't anybody see the mistake before it was too late? Many things contributed to the problem.One thing was that NASA scientists and mathematicians were working on two other spacecrafts at the same time.This was a challenge,and they were very tired from working long hours.
    The Mars Climate Orbiter cost$94 million to build.It also cost a lot of money to try to find the lost Orbiter in space.In addition,NASA's research on the cause of the problem was very expensive.This wasn't the first time that two different measurement systems caused mistakes in scientific projects.However,the Mars Climate Orbiter was definitely the most expensive mistake of all!

    What caused the Orbiter's problem,______.
    A:Scientists used wrong guidelines of mathematics
    B:Scientists used wrong building materials
    C:Scientists used different operating systems
    D:Scientists used different measurement systems

    答案:D
    解析:
    题干意为“NASA建造火星气候轨道器以获取关于火星上可能有生命的信息。”短文第一段提到,“火星上有水吗? 火星上有生命吗? 曾经是否有生命? NASA的科学家想要知道这些问题的答案。他们建造了航天器绕火星飞行以获取这些信息。航天器的名字叫火星气候轨道器。”故选A。
    题干意为“轨道器需要多长时间接近火星? 不到一年。”短文第二段前两句提到,火星气候轨道器于1998年12月向火星进发,旅程用了九个半月。故此选B。
    题干意为“轨道器什么时候开始出现问题? 当它接近火星的时候。”短文第二段第三、四句提到,起初一切正常,然而当轨道器接近火星的时候,糟糕的事情发生了。故选B。
    题干意为“是什么导致了轨道器的问题?科学家用了不同的测量系统。”短文第三段提出,有两组科学家一起开展关于轨道器的工作,一组在英国,另一组在美国。这两组科学家的工作方式大部分是相似的,但有一点重要的不同,那就是他们使用了不同的测量体系,美国组用的是公制,而英国组用的是英制,故选D。
    题干意为“为什么NASA的科学家没有在轨道器前往火星前发现问题?”短文第五段第三、四句指出,其中的一个原因是,NASA的科学家和数学家在研究火星气候轨道器的同时还在研究另外两台航天器,长时间的工作让他们非常疲惫。故选D。

  • 第18题:

    共用题干
    第一篇

    An Expensive Mistake

    Is there water on the planet Mars? Is there life on Mars?Was there ever life on Mars?Scientists from
    NASA wanted to know the answers to tliese questions.They built a spacecraft to travel around Mars and get
    informnation.The spacecraft was called the Mars Climate orbiter.
    The Mars Climate Orbiter left for Mars iii December 1998.The trip took nine and a half months.At first,
    everything was fine.However.when the Orbiter got near Mars,something terrible happened.The spacecraft
    didn't go to the right place.It went too close to Mars.it was too hot for the Orbiter there.The spacecraft
    couldn't function correctly.Suddenly,it stopped sending messages to NASA.The Orbiter was lost.
    How could this terrible thing happen? How did the Orbiter get closer to Mars than the scientists
    planned? Finally,they found the anlswer. Two teams of scientists worked together on the Orbiter. One team
    was in England,and one teann was in the United States.There were many similarities in the way they
    worked,but there was one important difference:The teams used different guidelines for measuring things.The
    United States team used the metric systcnni(公制).The oilier team used the English system.
    Because they used different systems,the scientists made a mathematical mistake.The Orbiter's orbit
    (the shape and pattern of its path)around Mars was not correct.The scientists put the Orbiter on the wrong
    path.The Orbiter got too close amid too hot,and it stopped functioning.

    Why didn'tanybody see the mistake before it was too late?Many things contributed to the problem.
    One thing was that NASA scientists and mathematicians were working on two other spacecrafts at the same
    time.This was a challenge,and they were very tired from working long hours.
    The Mars Climate Orbiter cost $94 million to build.It also cost a lot of money to try to find the lost Or-
    biter in space.In addition,NASA's research on the cause of the problem was very expensive.This wasn't
    the first time that two different measurement systems caused mistakes in scientific projects.However,the
    Mars Climate Orbiter was definitely the most expensive mistake of all!

    How long did it take the Orbiter to get close to Mars?
    A:One year.
    B:Less than one year.
    C:About two and a half years.
    D:More than three years.

    答案:B
    解析:
    文章第一段以三个问句开头:“火星上有水吗?"“火星上有生命吗?"“火星上有过生命吗?”接着指出NASA的科学家们想知道这些问题的答案,他们建造了航天飞船环绕火星飞行来获得信息。故选B。
    由文章第二段第二句话可知,飞船从地球到火星的旅程花费了九个半月的时间,故选B。
    由文章第二段第三、四句话“Atfirst,everythingwasfine.However,whentheOrbitergotnearMars,somethingterriblehappened.”可知飞船是在接近火星时出现问题的。
    由文章第三段和第四段可知,来自英国和美国的两组科学家共同负责飞船的工作,他们在做计算工作时采用了不同的计算准则。这造成计算数据出错,导致飞船绕火星飞行的轨道出现偏差。故选D。
    由文章倒数第二段可知,科学家们没能发现错误的其中一个原因是NASA的科学家和数学家们同时还要负责另外两个航天器的工作,长时间的工作使他们非常疲惫。故选C。

  • 第19题:

    共用题干
    Citizen Scientists
    Understanding how nature responds to climate change will require monitoring key life cycle events-flowering,the appearance of leaves,the first frog calls of the spring-all around the world.But ecologists can't be______(51)so they are turning to non-scientists,sometimes called citizen scientists,for help.
    Climate scientists are not present everywhere.______(52)there are so many places in the world and not enough scientists to observe all of them,they are asking for your help in_______(53)signs of climate change across the world.The citizen scientist movement encourages______(54)people to observe a very specific research interest-birds,trees,flowers budding,etc-and send their observations______(55)a giant database to be observed by professional scientists.This helps a small number of scientists track a______(56)amount of data that they would never be able to gather on their own.______(57)like citizen journalists helping large publications cover a hyper-local beat,citizen scientists are ready for the conditions where they live.______(58)that's needed to become one is a few minutes each day or each week to gather data and_______(59)it in.
    A group of scientists and educators launched an organization last year______(60) the National
    Phenology(生物气候学)Network."Phenology" is what scientists call the study of the timing of events in nature.
    One of the group's first efforts relies on scientists and non-scientists______(61)to collect data about plant flowering and leafing every year.The program,called Project BudBurst,collects life cycle______(62)on a variety of common plants from across the United States.People participating in the project-which is______(63)to everyone-record their observations on the Project BudBurst website.
    "People don't______(64)to be plant experts-they just have to look around and see what's in their neighborhood,"says Jennifer Scheartz,an education consultant with the project."As we collect this data,we'11 be able to make an'estimate of______(65)plants and communities of plants and animals will respond as the climate changes."

    _________59
    A:send
    B:print
    C:answer
    D:keep

    答案:A
    解析:
    空格后的句子表明,生态学家正向公民科学家寻求帮助,可推测出每个地方不可能都有生态学家。故此处应选择A项。 everywhere每个地方;anywhere任何地方(通常用于疑问句或否定句);somewhere某些地方;nowhere任何地方都不。
    此处表示:因为世界上有很多地方,但科学家的数量却不足,所以他们才寻求帮助。所以选择D项。if如果,倘若;although尽管;when当……的时候;because因为。
    气候变化的迹象需要人们进行“观察”。give给,给予;show展示;develop发展,开发; observe观察,观测。
    结合上下文可知,公民科学家运动鼓励一般人观察非常具体的研究对象。special特殊的;professional专业的;skillful熟练的;ordinary普通的,一般的。
    send…to…是固定搭配,表示“把……送往……”,符合题意。
    公民科学家帮助搜集数据,为数不多的气候学家就可以分析大量的数据。空格处应该是在强调数据量的庞大,因此选择D项。small小的,少的limited有限的simple简单的,朴素的large大的,大规模的。
    空格所在的句子把公民记者与公民科学家进行比较,表明他们的作用相似。much like 表示“就像……一样”,其中much修饰like,符合题意。very like与……很像,但不能用在句首,因此排除A项like与as都有“像……一样”的意思,若连用则意思重复,因此排除C项; many是形容词,不能修饰介词like,因此排除D项。
    第二段最后一句表明,要想成为公民科学家中的一员,需要做的全部事情就是每天或每周留出几分钟来搜集并发送数据。all全部,所有;any任何;some一些,某些;most大多数,大部分。
    根据第二段第三句可知,公民科学家搜集完信息后要将信息发往一个巨大的数据库,供专业科学家进行分析,所以此处选用send(送往,发送)。print打印,冲洗;answer回答;keep 保持,保留。
    此处表示被称为国家物候网络的组织,应该用called,表示事物与名称的关系。known 被知道,若要表示“被称为”应用known as ; featured有……的特征;belonged属于,是……的成员;called被称为,被叫作。
    这句话的大意是:这个团体最初的努力要依靠科学家和非科学家这类人去搜集花开叶落的信息。alike相似的,一类的(人或物),通常作后置定语;like相似的,一般作前置定语;un-like不同的; likely可能的,有希望的。
    本句大意是:花季追踪计划搜集美国各地的植物的生长周期的数据。而且四个选项中唯有data可以与collects(搜集)搭配。point观点,看法;wonder奇迹,惊奇;data数据;interest 兴趣。
    本句大意是:参与这一项目的人―这一项目对所有人开放―他们仅仅需要看看周围有什么。common普通的,平常的;suitable合适的;open开放的;strange奇怪的。
    don't have to是固定搭配,意思是“无需,不必”,符合题意。want想要;forget忘记;mind 介意。
    这句话的大意是:通过搜集数据,我们就能估算出植物和生物群落对气候变化会做出怎样的反应。how表示对方式的提问,用在此处符合题意。wh。谁,用来提问或连接先行词为人的定语从句;before在……之前;since自从,常用来引导时间状语从句,从句常用过去时,主句常用现在完成时。

  • 第20题:

    共用题干
    Citizen Scientists
    Understanding how nature responds to climate change will require monitoring key life cycle events-flowering,the appearance of leaves,the first frog calls of the spring-all around the world.But ecologists can't be______(51)so they are turning to non-scientists,sometimes called citizen scientists,for help.
    Climate scientists are not present everywhere.______(52)there are so many places in the world and not enough scientists to observe all of them,they are asking for your help in_______(53)signs of climate change across the world.The citizen scientist movement encourages______(54)people to observe a very specific research interest-birds,trees,flowers budding,etc-and send their observations______(55)a giant database to be observed by professional scientists.This helps a small number of scientists track a______(56)amount of data that they would never be able to gather on their own.______(57)like citizen journalists helping large publications cover a hyper-local beat,citizen scientists are ready for the conditions where they live.______(58)that's needed to become one is a few minutes each day or each week to gather data and_______(59)it in.
    A group of scientists and educators launched an organization last year______(60) the National
    Phenology(生物气候学)Network."Phenology" is what scientists call the study of the timing of events in nature.
    One of the group's first efforts relies on scientists and non-scientists______(61)to collect data about plant flowering and leafing every year.The program,called Project BudBurst,collects life cycle______(62)on a variety of common plants from across the United States.People participating in the project-which is______(63)to everyone-record their observations on the Project BudBurst website.
    "People don't______(64)to be plant experts-they just have to look around and see what's in their neighborhood,"says Jennifer Scheartz,an education consultant with the project."As we collect this data,we'11 be able to make an'estimate of______(65)plants and communities of plants and animals will respond as the climate changes."

    _________56
    A:small
    B:limited
    C:simple
    D:large

    答案:D
    解析:
    空格后的句子表明,生态学家正向公民科学家寻求帮助,可推测出每个地方不可能都有生态学家。故此处应选择A项。 everywhere每个地方;anywhere任何地方(通常用于疑问句或否定句);somewhere某些地方;nowhere任何地方都不。
    此处表示:因为世界上有很多地方,但科学家的数量却不足,所以他们才寻求帮助。所以选择D项。if如果,倘若;although尽管;when当……的时候;because因为。
    气候变化的迹象需要人们进行“观察”。give给,给予;show展示;develop发展,开发; observe观察,观测。
    结合上下文可知,公民科学家运动鼓励一般人观察非常具体的研究对象。special特殊的;professional专业的;skillful熟练的;ordinary普通的,一般的。
    send…to…是固定搭配,表示“把……送往……”,符合题意。
    公民科学家帮助搜集数据,为数不多的气候学家就可以分析大量的数据。空格处应该是在强调数据量的庞大,因此选择D项。small小的,少的limited有限的simple简单的,朴素的large大的,大规模的。
    空格所在的句子把公民记者与公民科学家进行比较,表明他们的作用相似。much like 表示“就像……一样”,其中much修饰like,符合题意。very like与……很像,但不能用在句首,因此排除A项like与as都有“像……一样”的意思,若连用则意思重复,因此排除C项; many是形容词,不能修饰介词like,因此排除D项。
    第二段最后一句表明,要想成为公民科学家中的一员,需要做的全部事情就是每天或每周留出几分钟来搜集并发送数据。all全部,所有;any任何;some一些,某些;most大多数,大部分。
    根据第二段第三句可知,公民科学家搜集完信息后要将信息发往一个巨大的数据库,供专业科学家进行分析,所以此处选用send(送往,发送)。print打印,冲洗;answer回答;keep 保持,保留。
    此处表示被称为国家物候网络的组织,应该用called,表示事物与名称的关系。known 被知道,若要表示“被称为”应用known as ; featured有……的特征;belonged属于,是……的成员;called被称为,被叫作。
    这句话的大意是:这个团体最初的努力要依靠科学家和非科学家这类人去搜集花开叶落的信息。alike相似的,一类的(人或物),通常作后置定语;like相似的,一般作前置定语;un-like不同的; likely可能的,有希望的。
    本句大意是:花季追踪计划搜集美国各地的植物的生长周期的数据。而且四个选项中唯有data可以与collects(搜集)搭配。point观点,看法;wonder奇迹,惊奇;data数据;interest 兴趣。
    本句大意是:参与这一项目的人―这一项目对所有人开放―他们仅仅需要看看周围有什么。common普通的,平常的;suitable合适的;open开放的;strange奇怪的。
    don't have to是固定搭配,意思是“无需,不必”,符合题意。want想要;forget忘记;mind 介意。
    这句话的大意是:通过搜集数据,我们就能估算出植物和生物群落对气候变化会做出怎样的反应。how表示对方式的提问,用在此处符合题意。wh。谁,用来提问或连接先行词为人的定语从句;before在……之前;since自从,常用来引导时间状语从句,从句常用过去时,主句常用现在完成时。

  • 第21题:

    单选题
    Which of the following is an appropriate title for this passage?
    A

    Ready for a Round Trip to Mars

    B

    Ready for a Short Visit to Mars

    C

    Ready for a One-way Trip to Mars

    D

    Ready for a Walk on Mars


    正确答案: D
    解析:

  • 第22题:

    单选题
    According to the passage, all the following statements are TRUE EXCEPT that_____.
    A

    a completion process will be held to select the four astronauts

    B

    the cost of Mars One could go as much as $6 billion

    C

    if it goes as planned, we could expect to watch Mars One on TV

    D

    the four astronauts could return to Earth after a few years' stay on Mars


    正确答案: C
    解析:

  • 第23题:

    单选题
    According to Project Mars One, humans could send four people to Mars within the next_____years.
    A

    seven

    B

    eight

    C

    ten

    D

    six


    正确答案: B
    解析: