填空题In astrology, the earth is regarded as the center of the solar system.____

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填空题
In astrology, the earth is regarded as the center of the solar system.____

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3.共用题干 The Northern LightsThe Sun is stormy and has its own kind of weather It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma,and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun,the stronger the solar wind.The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth's atmosphere at the poles. As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky. Each atmospheric gas glows a different color. Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.Watching auroras is fun and exciting,but normally you can only see them in places far north like Alaska and Canada. The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate,flicker,or even move like waves.During solar maximum,auroras are seen as far south as Florida,even Mexico!Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly. A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime. We know you will never forget it!Some scientists are worrying about the possible disappearance of the Earth's protective magnetic field in the future.A: RightB: WrongC: Not mentioned

更多“填空题In astrology, the earth is regarded as the center of the solar system.____”相关问题
  • 第1题:

    共用题干
    Solar Storm

    At the end of October 2003,a sudden solar storm hit the earth.A solar storm refers to
    the large amounts of charged particles released into space_________(1)the solar energy
    increases.The release of the energy_________(2)place along with the activity of the
    sunspots with a cycle of 11 years.This time,the_________(3)of the storm exceeded
    expectations.
    This_________(4)of intense solar storm was caused by the eruption of a solar flare
    (闪光)and the ejection(喷发)of the solar corona(日冠)on October28, 2003. Large
    amounts of charged particles moved 150, 000,000 kilometers through space toward the
    _________(5)in 19 hours. They could affect aircraft roaming(漫游)in space.
    The high-energy particles will_________(6)some of the parts of an aircraft.They
    may also cause it to fail.High-energy particles can threaten the safety of an aircraft at a
    high orbit.If an aircraft orbits at a lower orbit,it is_________(7)because it is under the
    protection of the earth's magnetic field.
    A solar storm not only affects aircraft but also is a_________(8)to the environment
    and humans.The aerosphere and magnetic field of the earth can_________(9)humans
    from ultraviolet radiation and X-rays. While most of the X-rays are absorbed after they enter
    the aerosphere(大气层),still a few can_________(10) the ground.
    The geomagnetic storm caused by this round of solar storm reaches its highest level on
    the two_________(11)of the earth,which affects electricity supply of North America.
    Overexposure to_________(12)threatens the health of passengers on planes flying over
    the Polar Regions.If we fly in the sky during such a solar storm,it_________(13)we
    receive ten times the X-ray radiation.It's really damaging.
    Scientists say a solar eruption is like the sun sneezing,which will make the earth
    _________(14)a cold.Though this natural force is irresistible,scientists can still
    _________(15)its movement accurately by monitoring.Facing successive solar storms,
    humans can't drop their guard.

    _________(13)
    A:recommends
    B:means
    C:proposes
    D:advises

    答案:B
    解析:

  • 第2题:

    共用题干
    第一篇
    The Northern Lights
    The sun is stormy and has its own kind of weather.It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour.These particles are called plasma (等离子体),and the stream of plasma coming from the Sun is called the solar wind.The more active the Sun,the stronger the solar wind.
    The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth.When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into tile Earth's atmosphere at the poles.As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky.
    Each atmospheric gas glows a different color.Oxygen and nitrogen glows red and green arid nitrogen glows violet purple.As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.
    Watching auroras(北极光)is fun and exciting, but normally you can only see them in places far north like Alaska and Canada.The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate(跳动),flicker(闪烁),or even move like waves.During solar maximum,5 auroras are seen as far south as Florida,even Mexico!Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly.A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.
    We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime.We know you will never forget it!

    What is the author's tone toward the Northern Lights?
    A:Indifferent.
    B:Sarcastic.
    C:Sharp.
    D:Appreciative.

    答案:D
    解析:
    本篇文章主要介绍了北极光的形成、运动以及色彩。
    根据第一段第三、四句可知,热量在时速约100万英里的带电粒子流中由太阳向地球流动,这些粒子被称为等离子体,源于太阳的等离子体流又被称为太阳风。由此不难推测出,太阳风是能量从太阳向地球高速流动造成的,所以选择C项。
    根据第二段第三句可知,带电粒子被困在环绕地球的磁场中,并且根据第一段第三、四句以及第二段第一句可知,这些带电粒子即为太阳风。由此可知,太阳风吹向地球时,会被地球外围的磁场束缚住,所以选择A项。
    根据第二段最后一句可知,电子落向地球时与大气中的气体分子碰撞而产生了光芒;根据第三段第一句和第三句可知,碰撞后每种大气分子发出的光芒不同;不同的光芒在天空中闪现,造成了北极光和南极光;根据第二段第五句可知,原子粒子被称为电子。由此推出,北极光是由电子,即原子粒子,与大气中的气体分子碰撞造成的。
    根据第四段第二句可知,北极光穿过天空的速度通常足够慢,能够让人看到,但是它们可能也会跳动、闪烁,甚至会像波浪一样。由此可知,北极光移动的速度很慢,能够被人用眼观察,所以选择A项。
    最后一段表明,作者希望望人在一生中至少应该去看一次北极光,并且说他知道我们会感到难忘。可见作者对北极光是喜爱的,所以选择D项。

  • 第3题:

    共用题干
    第一篇
    The Northern Lights
    The sun is stormy and has its own kind of weather.It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour.These particles are called plasma (等离子体),and the stream of plasma coming from the Sun is called the solar wind.The more active the Sun,the stronger the solar wind.
    The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth.When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into tile Earth's atmosphere at the poles.As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky.
    Each atmospheric gas glows a different color.Oxygen and nitrogen glows red and green arid nitrogen glows violet purple.As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.
    Watching auroras(北极光)is fun and exciting, but normally you can only see them in places far north like Alaska and Canada.The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate(跳动),flicker(闪烁),or even move like waves.During solar maximum,5 auroras are seen as far south as Florida,even Mexico!Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly.A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.
    We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime.We know you will never forget it!

    What happens when solar wind comes to the Earth?
    A:It is trapped in magnetic belts around the Earth.
    B:A protective magnetic field is formed at the same time.
    C:It destroys the protective magnetic field surrounding the Earth.
    D:It breaks magnetic field lines and does severe damage to the Earth.

    答案:A
    解析:
    本篇文章主要介绍了北极光的形成、运动以及色彩。
    根据第一段第三、四句可知,热量在时速约100万英里的带电粒子流中由太阳向地球流动,这些粒子被称为等离子体,源于太阳的等离子体流又被称为太阳风。由此不难推测出,太阳风是能量从太阳向地球高速流动造成的,所以选择C项。
    根据第二段第三句可知,带电粒子被困在环绕地球的磁场中,并且根据第一段第三、四句以及第二段第一句可知,这些带电粒子即为太阳风。由此可知,太阳风吹向地球时,会被地球外围的磁场束缚住,所以选择A项。
    根据第二段最后一句可知,电子落向地球时与大气中的气体分子碰撞而产生了光芒;根据第三段第一句和第三句可知,碰撞后每种大气分子发出的光芒不同;不同的光芒在天空中闪现,造成了北极光和南极光;根据第二段第五句可知,原子粒子被称为电子。由此推出,北极光是由电子,即原子粒子,与大气中的气体分子碰撞造成的。
    根据第四段第二句可知,北极光穿过天空的速度通常足够慢,能够让人看到,但是它们可能也会跳动、闪烁,甚至会像波浪一样。由此可知,北极光移动的速度很慢,能够被人用眼观察,所以选择A项。
    最后一段表明,作者希望望人在一生中至少应该去看一次北极光,并且说他知道我们会感到难忘。可见作者对北极光是喜爱的,所以选择D项。

  • 第4题:

    共用题干
    第一篇
    The Northern Lights
    The sun is stormy and has its own kind of weather.It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour.These particles are called plasma (等离子体),and the stream of plasma coming from the Sun is called the solar wind.The more active the Sun,the stronger the solar wind.
    The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth.When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into tile Earth's atmosphere at the poles.As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky.
    Each atmospheric gas glows a different color.Oxygen and nitrogen glows red and green arid nitrogen glows violet purple.As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.
    Watching auroras(北极光)is fun and exciting, but normally you can only see them in places far north like Alaska and Canada.The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate(跳动),flicker(闪烁),or even move like waves.During solar maximum,5 auroras are seen as far south as Florida,even Mexico!Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly.A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.
    We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime.We know you will never forget it!

    The Northern Lights are created when_______.
    A:the magnetic field lines fail to reconnect
    B:the electrons falling to the Earth shine in different colors
    C:atomic particles fall to the Earth and collide with atmospheric gas molecules
    D:oxygen and nitrogen are separated from the atmospheric gases

    答案:C
    解析:
    本篇文章主要介绍了北极光的形成、运动以及色彩。
    根据第一段第三、四句可知,热量在时速约100万英里的带电粒子流中由太阳向地球流动,这些粒子被称为等离子体,源于太阳的等离子体流又被称为太阳风。由此不难推测出,太阳风是能量从太阳向地球高速流动造成的,所以选择C项。
    根据第二段第三句可知,带电粒子被困在环绕地球的磁场中,并且根据第一段第三、四句以及第二段第一句可知,这些带电粒子即为太阳风。由此可知,太阳风吹向地球时,会被地球外围的磁场束缚住,所以选择A项。
    根据第二段最后一句可知,电子落向地球时与大气中的气体分子碰撞而产生了光芒;根据第三段第一句和第三句可知,碰撞后每种大气分子发出的光芒不同;不同的光芒在天空中闪现,造成了北极光和南极光;根据第二段第五句可知,原子粒子被称为电子。由此推出,北极光是由电子,即原子粒子,与大气中的气体分子碰撞造成的。
    根据第四段第二句可知,北极光穿过天空的速度通常足够慢,能够让人看到,但是它们可能也会跳动、闪烁,甚至会像波浪一样。由此可知,北极光移动的速度很慢,能够被人用眼观察,所以选择A项。
    最后一段表明,作者希望望人在一生中至少应该去看一次北极光,并且说他知道我们会感到难忘。可见作者对北极光是喜爱的,所以选择D项。

  • 第5题:

    共用题干
    California Gives Green Light to Space Solar Power

    Energy beamed down from space is one step closer to reality,now that California has given the green
    light to an agreement that would see the Pacific Gas and Electric Company buy 200 megawatts(兆瓦)of power
    beamed down from solar-power satellites beginning in 2016.But some major challenges will have to be
    overcome if the technology is to be used widely.
    A start-up company called Solaren is designing the satellites,which it says will use radio waves to beam
    energy down to a receiving station on Earth.
    The attraction of collecting solar power in space is the almost uninterrupted sunshine available in geo-
    synchronous(与地球同步的)orbit. Earth-based solar cells , by contrast , can only collect sun light during day-
    time and when skies are clear.
    But space-based solar power must grapple(努力克服)with the high cost per kilogram of launching things in-
    to space,says Richard Schwartz of Purdue University in West Lafayette,Indiana."if you're talking about it being
    economically viable for power of the Earth,it's a tough go,"he says.
    Cal Boerman,Solaren's director of energy services,says the company designed its satellites with a view
    to keeping launch costs down."We knew we had to come up with a different,revolutionary design,"he says.
    A patent the company has won describes ways to reduce the system's weight,including using inflatable mir-
    rors to focus sunlight on solar cells,so a smaller number can collect the same amount of energy.
    But using mirrors introduces other challenges,including keeping the solar cells from overheating,says
    Schwartz."You have to take care of heat dissipation(散发)because you're now concentrating a lot of energy
    in one place,"he says.According to the company's patent,Solaren's solar cells will be connected to radia-
    tors to help keep them cool.
    Though Boerman says the company believes it can make space-based solar power work,it is not expec-
    ting to crowd out other forms of renewable energy.Laws in California and other states require increasing use
    of renewable energy in coming years,he points out."To meet those needs,we're going to need all types of
    renewable energy sources,"he says.

    Space-based solar cells could collect solar power only when skies are clear.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:B
    解析:
    根据短文第二段可知,太阳能卫星会使用无线电波将能源发送到地球上的接收站。
    短文在第一段中讲太平洋天然气和电力公司将购买200兆瓦的从太阳能电站的卫星上 发送来的电力时提到了200这个数字。
    短文在第三段末尾提到:地球上的太阳能电池只能在白天且无云的时候收集阳光。
    根据短文第四段可知,在太空的太阳能工厂必须努力克服的问题是:向太空每发射一 千克的物品都要付出高昂代价,即成本高的问题。
    根据短文第五段的最后一句可知答案。
    根据短文最后一段可知,从太空中获得的太阳能并不会挤掉其他形式的可再生能源。
    短文主要围绕美国,尤其是加州来说,并没有提到其他国家的情况。

  • 第6题:

    填空题
    During the 1700’s in England astrology gained less popularity than before.____

    正确答案: H
    解析:
    由题干中“1700’s in England”定位至H段。本段讲到,英格兰的占星术拥护者数量在1700’s期间减少了。故匹配段落为H段。

  • 第7题:

    单选题
    The greatest chance for the existence of extraterrestrial life is on a planet beyond our solar system. The Milky Way galaxy alone contains 100 billion other suns, many of which could be accompanied by planets similar enough to Earth to make them suitable abodes of life.  The statement above assumes which of the following?
    A

    Living creatures on another planet would probably have the same appearance as those on Earth.

    B

    Life cannot exist on other planets in our solar system.

    C

    If the appropriate physical conditions exist, life is an inevitable consequence.

    D

    More than one of the suns in the galaxy is accompanied by an Earth-like planet.

    E

    It is likely that life on another planet would require conditions similar to those on Earth.


    正确答案: E
    解析:
    文段从其他行星与地球环境相似,推出其他行星上有生命存在的结论,所以可知作者暗示生命体的存在需要和地球相类似的生存条件,故本题应选E项。

  • 第8题:

    单选题
    According to the passage, the greatest part of the solar energy that reaches the Earth is _____.
    A

    reflected back to space by snow and ice

    B

    concentrated at visible wavelengths

    C

    absorbed by carbon dioxide molecules

    D

    absorbed by atmospheric water vapor


    正确答案: D
    解析:
    根据文章第一段第二句可知,“these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concentrated, to pass through”,由此可以推断选项B是正确的。

  • 第9题:

    填空题
    The discoveries of heavenly bodies that were against the principles of astrology revealed great differences between astrology and astronomy in their methods and purposes.____

    正确答案: B
    解析:
    由题意可定位至B段。本段讲到,这样导致的结果是,天文学和占卜术在方法和目的方面出现巨大的差异。故匹配段落为B段。

  • 第10题:

    单选题
    A plane that cuts the Earth’s surface at any angle and passes through the center will always form().
    A

    the equator

    B

    a great circle

    C

    a small circle

    D

    a meridian


    正确答案: B
    解析: 暂无解析

  • 第11题:

    填空题
    Astrology is based on the conviction that the patterns the heavenly bodies form can tell a person’s character or future.____

    正确答案: A
    解析:
    由题意可定位至A段。首先提出占星术研究的对象,然后讲到它的依据是,人们认为天体的形状能够反映一个人的性格或将来。故匹配段落为A段。

  • 第12题:

    单选题
    We learn from the passage that ______.
    A

    all living things on the earth depend on the sun for their food

    B

    a forest looks dark in winter because it absorbs solar energy

    C

    only 0.023 of the energy from the sun is made use of on the earth

    D

    greenhouse gases allow heat energy to escape from the earth’ s surface


    正确答案: A
    解析:
    根据第一段Sunlight also provides the energy used by green plants to make their own food,阳光给绿色植物提供能量使其生产自己的食物,故选A。

  • 第13题:

    共用题干
    California Gives Green Light to Space Solar Power

    Energy beamed down from space is one step closer to reality,now that California has given the green
    light to an agreement that would see the Pacific Gas and Electric Company buy 200 megawatts(兆瓦)of power
    beamed down from solar-power satellites beginning in 2016.But some major challenges will have to be
    overcome if the technology is to be used widely.
    A start-up company called Solaren is designing the satellites,which it says will use radio waves to beam
    energy down to a receiving station on Earth.
    The attraction of collecting solar power in space is the almost uninterrupted sunshine available in geo-
    synchronous(与地球同步的)orbit. Earth-based solar cells , by contrast , can only collect sun light during day-
    time and when skies are clear.
    But space-based solar power must grapple(努力克服)with the high cost per kilogram of launching things in-
    to space,says Richard Schwartz of Purdue University in West Lafayette,Indiana."if you're talking about it being
    economically viable for power of the Earth,it's a tough go,"he says.
    Cal Boerman,Solaren's director of energy services,says the company designed its satellites with a view
    to keeping launch costs down."We knew we had to come up with a different,revolutionary design,"he says.
    A patent the company has won describes ways to reduce the system's weight,including using inflatable mir-
    rors to focus sunlight on solar cells,so a smaller number can collect the same amount of energy.
    But using mirrors introduces other challenges,including keeping the solar cells from overheating,says
    Schwartz."You have to take care of heat dissipation(散发)because you're now concentrating a lot of energy
    in one place,"he says.According to the company's patent,Solaren's solar cells will be connected to radia-
    tors to help keep them cool.
    Though Boerman says the company believes it can make space-based solar power work,it is not expec-
    ting to crowd out other forms of renewable energy.Laws in California and other states require increasing use
    of renewable energy in coming years,he points out."To meet those needs,we're going to need all types of
    renewable energy sources,"he says.

    Solaren is going to design 200 solar-power satellites.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:C
    解析:
    根据短文第二段可知,太阳能卫星会使用无线电波将能源发送到地球上的接收站。
    短文在第一段中讲太平洋天然气和电力公司将购买200兆瓦的从太阳能电站的卫星上 发送来的电力时提到了200这个数字。
    短文在第三段末尾提到:地球上的太阳能电池只能在白天且无云的时候收集阳光。
    根据短文第四段可知,在太空的太阳能工厂必须努力克服的问题是:向太空每发射一 千克的物品都要付出高昂代价,即成本高的问题。
    根据短文第五段的最后一句可知答案。
    根据短文最后一段可知,从太空中获得的太阳能并不会挤掉其他形式的可再生能源。
    短文主要围绕美国,尤其是加州来说,并没有提到其他国家的情况。

  • 第14题:

    共用题干
    第一篇
    The Northern Lights
    The sun is stormy and has its own kind of weather.It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour.These particles are called plasma (等离子体),and the stream of plasma coming from the Sun is called the solar wind.The more active the Sun,the stronger the solar wind.
    The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth.When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into tile Earth's atmosphere at the poles.As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky.
    Each atmospheric gas glows a different color.Oxygen and nitrogen glows red and green arid nitrogen glows violet purple.As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.
    Watching auroras(北极光)is fun and exciting, but normally you can only see them in places far north like Alaska and Canada.The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate(跳动),flicker(闪烁),or even move like waves.During solar maximum,5 auroras are seen as far south as Florida,even Mexico!Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly.A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.
    We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime.We know you will never forget it!

    The solar wind comes into being as a result of_______.
    A:disappearance of the Sun's gravity
    B:unpredictable weather of the Sun
    C:fast flow of energy away from the Sun
    D:a stream of particles being blown away

    答案:C
    解析:
    本篇文章主要介绍了北极光的形成、运动以及色彩。
    根据第一段第三、四句可知,热量在时速约100万英里的带电粒子流中由太阳向地球流动,这些粒子被称为等离子体,源于太阳的等离子体流又被称为太阳风。由此不难推测出,太阳风是能量从太阳向地球高速流动造成的,所以选择C项。
    根据第二段第三句可知,带电粒子被困在环绕地球的磁场中,并且根据第一段第三、四句以及第二段第一句可知,这些带电粒子即为太阳风。由此可知,太阳风吹向地球时,会被地球外围的磁场束缚住,所以选择A项。
    根据第二段最后一句可知,电子落向地球时与大气中的气体分子碰撞而产生了光芒;根据第三段第一句和第三句可知,碰撞后每种大气分子发出的光芒不同;不同的光芒在天空中闪现,造成了北极光和南极光;根据第二段第五句可知,原子粒子被称为电子。由此推出,北极光是由电子,即原子粒子,与大气中的气体分子碰撞造成的。
    根据第四段第二句可知,北极光穿过天空的速度通常足够慢,能够让人看到,但是它们可能也会跳动、闪烁,甚至会像波浪一样。由此可知,北极光移动的速度很慢,能够被人用眼观察,所以选择A项。
    最后一段表明,作者希望望人在一生中至少应该去看一次北极光,并且说他知道我们会感到难忘。可见作者对北极光是喜爱的,所以选择D项。

  • 第15题:

    共用题干
    The Northern Lights
    The Sun is stormy and has its own kind of weather It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma,and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun,the stronger the solar wind.
    The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.
    The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth's atmosphere at the poles. As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky. Each atmospheric gas glows a different color. Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.
    Watching auroras is fun and exciting,but normally you can only see them in places far north like Alaska and Canada. The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate,flicker,or even move like waves.During solar maximum,auroras are seen as far south as Florida,even Mexico!
    Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly. A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.
    We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime. We know you will never forget it!

    The Earth is quite safe with a magnetic field surrounding it to protect it from the attack by the solar wind.
    A: Right
    B: Wrong
    C: Not mentioned

    答案:A
    解析:
    题干意为“太阳的引力太弱,等离子体逃离太阳,流向地球”。利用题干中的细节信息词/短语the Sun's gravity, plasma, Earth作为定位线索,在第一段中找到相关句: The Sun is stormy and has its own kind of weather. It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma,and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun, the stronger the solar wind.定位线索词集中出现在第一段中,因此重点关注第一段。第一段意为“太阳是多风暴的,有它自己独特的气候。太阳非常热,而且活动又极为剧烈,以至于太阳的引力也无法紧紧吸住它自己的大气层。热量以电粒子流的形式逃离太阳,流向地球,时速高达100万英里。这些粒子叫等离子体,来自太阳的等离子流叫太阳风。太阳活动越剧烈,太阳风越强烈”。依据第一段的内容来看,等离子体逃离太阳的原因不是因为太阳的引力太弱,而是因为太阳非常热,活动又极为剧烈,由此可见题干陈述的意义与短文内容不一致。所以答案为B。
    题干意为“地球相当安全,因为有磁场在高空包围着地球,将太阳风档在地球大气层外面”。利用题干中的细节信息词/短语the Earth, a magnetic field, attack by the solar wind作为定位线索,在第二段中找到相关句:The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet(指地 球).The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and recon-fleet.定位线索词集中出现在第二段第一句中,因此重点关注该句。该句提到“太阳风不断地流向地球,但是不必担心,因为有一个保护性的磁场包围着我们的地球”。显然该句意义与题干意义一致。所以答案为A。
    题干意为“有些科学家担心包围地球起防护作用的磁场有一天会消失”。利 用题干中的细节信息短语some scientists, possible disappearance of the Earth's protective magnetic field, in the future作为定位线索,结果发现disappearance of the Earth's protective magnetic field在短文中根本没有提到,some scientists在短文中也没有出现,由此可知一些科学家是否在担心包围地球起防护作用的磁场有一天会消失是短文中未提及的信息。所以答 案为C。
    题干意为“当电子落入地球两极的大气层中,并与大气层中的气体分子碰 撞时就形成了极光”。利用题干中的细节信息词/短语auroras, electrons, Earth's atmos-phere, poles, gas molecule作为定位线索,在第三段中找到相关句:The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth's atmosphere at the poles.As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky. Each atmos- pheric gas glows a different color. Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.定位线索词集中出现在第三段中,因此重点关注第三段。首先重点关注第三段的前两句。这两个句子说明“磁场磁力线的断开和闭合产生叫电子的原子粒子,该原子粒子会被截留在磁场中,并最终落入地球两极的大气层中。等离子流的电子进入地球,与大气层的气体分子发生碰撞,在天空中产生光芒”。接下来的句子提到 “每一种大气层的气体会产生不同颜色的光,氧和氮发红绿光,氮气发蓝紫光。当这些不同颜色的光在夜空中闪烁时就产生了北极光和南极光”。由此可见当等离子流的电子进入两极的大气层,并与大气层的气体分子发生碰撞时,就会产出极光。题干句表达的意思与短文介绍的极光成因相符,所以答案是A。
    题干意为“除非你在阿拉斯加州或是在加拿大,否则你看不见北极光”。利用题干中的细节信息词/短语Northern Lights, Alaska, Canada作为定位线索,在第四段中找 到相关句:Watching auroras (Northern Lights的近义词)is fun and exciting, but normally you can only see them in places far north like Alaska and Canada.The movement of the auro- ra across the sky is usually slow enough to easily follow with your eyes but they can also pul- sate,flicker,or even move like waves.During solar maximum,auroras are seen as far south as Florida, even Mexico!定位线索词集中在第四段中,因此重点关注这个段落,尤其是该段第一句。该句意为“看北极光很有趣也很令人兴奋,但是通常你只有在极北的地方,例如在阿 拉斯加州和加拿大才能看见极光”。但是接下来,该段最后一句还提到“在太阳风暴达到最高峰的期间,明亮的北极光甚至在位于极南面的佛罗里达州甚至墨西哥都能看到”,由此可见 并非只有在阿拉斯加州或是在加拿大才能看见北极光。所以题干陈述的信息与短文内容不一 致。因此答案为B。
    题干意为“每年都会有上万游客专程前往娜威和瑞典观赏北极光”。利用题 干中的细节信息词/短语tens of thousands of tourists, special trips, Norway, Sweden, every year, Northern Lights作为定位线索,结果发现短文中根本没有提到关于游客的信息,因此题干中陈述的信息为短文中未提及的信息。所以答案为C。
    题干意为“极光通常很接近地面,又长又厚”。利用题干中的细节信息词/短语aurora , ground作为定位线索,在短文中寻找相关句,同时因为题千中出现了修饰词 long , thick,也关注这两个修饰词在短文中的出现情况,这样在第五段中找到相关句:Auro- ras often seem to be very close to the ground,but the lowest aurora is still about 100 kilome- ters above the ground,a distance much higher than clouds are f

  • 第16题:

    共用题干
    The Northern Lights
    The Sun is stormy and has its own kind of weather It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma,and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun,the stronger the solar wind.
    The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.
    The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth's atmosphere at the poles. As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky. Each atmospheric gas glows a different color. Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.
    Watching auroras is fun and exciting,but normally you can only see them in places far north like Alaska and Canada. The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate,flicker,or even move like waves.During solar maximum,auroras are seen as far south as Florida,even Mexico!
    Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly. A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.
    We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime. We know you will never forget it!

    An aurora is generally close to the ground and is very long and thick.
    A: Right
    B: Wrong
    C: Not mentioned

    答案:B
    解析:
    题干意为“太阳的引力太弱,等离子体逃离太阳,流向地球”。利用题干中的细节信息词/短语the Sun's gravity, plasma, Earth作为定位线索,在第一段中找到相关句: The Sun is stormy and has its own kind of weather. It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma,and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun, the stronger the solar wind.定位线索词集中出现在第一段中,因此重点关注第一段。第一段意为“太阳是多风暴的,有它自己独特的气候。太阳非常热,而且活动又极为剧烈,以至于太阳的引力也无法紧紧吸住它自己的大气层。热量以电粒子流的形式逃离太阳,流向地球,时速高达100万英里。这些粒子叫等离子体,来自太阳的等离子流叫太阳风。太阳活动越剧烈,太阳风越强烈”。依据第一段的内容来看,等离子体逃离太阳的原因不是因为太阳的引力太弱,而是因为太阳非常热,活动又极为剧烈,由此可见题干陈述的意义与短文内容不一致。所以答案为B。
    题干意为“地球相当安全,因为有磁场在高空包围着地球,将太阳风档在地球大气层外面”。利用题干中的细节信息词/短语the Earth, a magnetic field, attack by the solar wind作为定位线索,在第二段中找到相关句:The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet(指地 球).The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and recon-fleet.定位线索词集中出现在第二段第一句中,因此重点关注该句。该句提到“太阳风不断地流向地球,但是不必担心,因为有一个保护性的磁场包围着我们的地球”。显然该句意义与题干意义一致。所以答案为A。
    题干意为“有些科学家担心包围地球起防护作用的磁场有一天会消失”。利 用题干中的细节信息短语some scientists, possible disappearance of the Earth's protective magnetic field, in the future作为定位线索,结果发现disappearance of the Earth's protective magnetic field在短文中根本没有提到,some scientists在短文中也没有出现,由此可知一些科学家是否在担心包围地球起防护作用的磁场有一天会消失是短文中未提及的信息。所以答 案为C。
    题干意为“当电子落入地球两极的大气层中,并与大气层中的气体分子碰 撞时就形成了极光”。利用题干中的细节信息词/短语auroras, electrons, Earth's atmos-phere, poles, gas molecule作为定位线索,在第三段中找到相关句:The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth's atmosphere at the poles.As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky. Each atmos- pheric gas glows a different color. Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.定位线索词集中出现在第三段中,因此重点关注第三段。首先重点关注第三段的前两句。这两个句子说明“磁场磁力线的断开和闭合产生叫电子的原子粒子,该原子粒子会被截留在磁场中,并最终落入地球两极的大气层中。等离子流的电子进入地球,与大气层的气体分子发生碰撞,在天空中产生光芒”。接下来的句子提到 “每一种大气层的气体会产生不同颜色的光,氧和氮发红绿光,氮气发蓝紫光。当这些不同颜色的光在夜空中闪烁时就产生了北极光和南极光”。由此可见当等离子流的电子进入两极的大气层,并与大气层的气体分子发生碰撞时,就会产出极光。题干句表达的意思与短文介绍的极光成因相符,所以答案是A。
    题干意为“除非你在阿拉斯加州或是在加拿大,否则你看不见北极光”。利用题干中的细节信息词/短语Northern Lights, Alaska, Canada作为定位线索,在第四段中找 到相关句:Watching auroras (Northern Lights的近义词)is fun and exciting, but normally you can only see them in places far north like Alaska and Canada.The movement of the auro- ra across the sky is usually slow enough to easily follow with your eyes but they can also pul- sate,flicker,or even move like waves.During solar maximum,auroras are seen as far south as Florida, even Mexico!定位线索词集中在第四段中,因此重点关注这个段落,尤其是该段第一句。该句意为“看北极光很有趣也很令人兴奋,但是通常你只有在极北的地方,例如在阿 拉斯加州和加拿大才能看见极光”。但是接下来,该段最后一句还提到“在太阳风暴达到最高峰的期间,明亮的北极光甚至在位于极南面的佛罗里达州甚至墨西哥都能看到”,由此可见 并非只有在阿拉斯加州或是在加拿大才能看见北极光。所以题干陈述的信息与短文内容不一 致。因此答案为B。
    题干意为“每年都会有上万游客专程前往娜威和瑞典观赏北极光”。利用题 干中的细节信息词/短语tens of thousands of tourists, special trips, Norway, Sweden, every year, Northern Lights作为定位线索,结果发现短文中根本没有提到关于游客的信息,因此题干中陈述的信息为短文中未提及的信息。所以答案为C。
    题干意为“极光通常很接近地面,又长又厚”。利用题干中的细节信息词/短语aurora , ground作为定位线索,在短文中寻找相关句,同时因为题千中出现了修饰词 long , thick,也关注这两个修饰词在短文中的出现情况,这样在第五段中找到相关句:Auro- ras often seem to be very close to the ground,but the lowest aurora is still about 100 kilome- ters above the ground,a distance much higher than clouds are f

  • 第17题:

    填空题
    ()was regarded as father of the American short stories.

    正确答案: Washington Irving
    解析: 暂无解析

  • 第18题:

    填空题
    The names for the planets and the signs of zodiac used in astrology today were originally devised by the Roman.____

    正确答案: G
    解析:
    由题干中“The names for the planets and the signs of zodiac”可定位至G段。本段讲到,沿用到现在的行星和星座的名称是古罗马人的叫法,即表明这些名称是由罗马人创造的。故匹配段落为G段。

  • 第19题:

    填空题
    ()is regarded as a "worshipper of nature".

    正确答案: Wordsworth
    解析: 暂无解析

  • 第20题:

    单选题
    ()astrology and alchemy may be regarded as fundamental aspects of thought is indicated by their apparent universality.
    A

    Bothare

    B

    Whatboth

    C

    Both

    D

    Thatboth


    正确答案: D
    解析: 暂无解析

  • 第21题:

    填空题
    In astrology, the earth is regarded as the center of the solar system.____

    正确答案: C
    解析:
    由题干中“the earth”定位至C段。本段讲到在占星术里,地球被当作太阳系的中心。故匹配段落为C段。

  • 第22题:

    单选题
    1 nautical mile is the lenth of an arc of a great circle which subtends an angel of()at the center of the Earth.
    A

    1degree

    B

    1 minute

    C

    1second

    D

    1.5 degree


    正确答案: D
    解析: 暂无解析

  • 第23题:

    单选题
    A

    To examine the chemical elements in the Ice Age.

    B

    To look into the pattern of solar wind activity.

    C

    To analyze the composition of different trees.

    D

    To find out the origin of carbon-14 on Earth.


    正确答案: C
    解析:
    细节题。从录音结尾来看,科学家的主要目的是通过对树木年轮的考查来研究“solar wind activity”。

  • 第24题:

    单选题
    The transition of the Earth’s magnetic field is possibly caused by _____.
    A

    the flows of melted iron inside the Earth

    B

    the periodical movement of the Earth

    C

    the mechanical energy of the solar system

    D

    the force coming from outer space


    正确答案: A
    解析:
    文章最后一段:谁也不能准确地知道为什么地球磁场会周期性转换,但是科学家说其原因可能在于地壳中融化了的铁的无序流动,它们看起来就像木星上组成云的气体一样。