单选题A farmer imported several fine long wool Tomney sheep from Australia to breed with his Debouittet sheep in hopes of increasing the value of the flock’s wool. This is an example of ______.A pure-breedingB crossbreedingC reproducingD cloning

题目
单选题
A farmer imported several fine long wool Tomney sheep from Australia to breed with his Debouittet sheep in hopes of increasing the value of the flock’s wool. This is an example of ______.
A

pure-breeding

B

crossbreeding

C

reproducing

D

cloning

相似考题

1.His oral English is _____ than his brother's.A. wellB. goodC. betterD. fine

2.She had a great deal of trouble ________ the sheep to a place of safety in the snowstorm.A. drivingB. driveC. to driveD. to driving

3.Passage FiveAustralia is nearly as large as the United States, but most of it is too dry for people to live in. Aroundthis dry part are large sheep and cow farms. A few of them are as large as the smallest states: of America.Often the nearest neighbours are several hundred kilometers away.The two-way radio is very important to people who live on these great Australian farms. It works much like atelephone. A person can listen to someone else talk and then gives an answer. For example, people onthe large farms could talk to a doctor far away. They could tell the doctor about someone who was ill,and the doctor could let them know how to look after the sick person.As the large farms were so far from towns, the children could not go to school. Radio schools werestarted for them in some places. At a certain time each day, boys and girls turn on their radios andlisten to teachers in cities far away.Families on the large farms wanted to give news to their neighbours. The programme Round RobinTalks by radio was started to keep families in touch with each other. They could talk about who wasgoing away and who was iii. The men could talk about their sheep and cows and how much moneythe markets would pay for them. In many ways the radio became a newspaper for the farm people of Australia.52. In the passage "the two-way radio" is______.A. important to AmericansB. useful for children onlyC. used as a telephoneD. only used by doctors

4.The long wool boom helped to increase the population of Australia significantly.()此题为判断题(对，错)。

更多“单选题A farmer imported several fine long wool Tomney sheep from Australia to breed with his Debouittet sheep in hopes of increasing the value of the flock’s wool. This is an example of ______.A pure-breedingB crossbreedingC reproducingD cloning”相关问题

  • 第1题：

    In the phrases a herd of cattle, a flock of sheep, both cattle and sheep contain two morphemes.()


    参考答案：正确

  • 第2题：

    which of the following helped to increase the population of australia significantly?

    A. The World War II.

    B. The gold rush.

    C. The minimum wage.

    D. The long wool boom.


    参考答案：B

  • 第3题：

    Because sheep () meat and wool, they are valued in many countries.

    A. produces both

    B. both produce

    C. produce both

    D. both produces

    知识点: Newassignment1


    参考答案: C

  • 第4题：

    most of australia’s unique plants and animals are imported from other continents. ()


    参考答案：错误

  • 第5题：

    共用题干
    Cloning（克隆）:Future Perlect?

    1 A clone is an exact copy of a plant or animal produced from any one cell.Since Scottish
    scientists reported that they had managed to clone a sheep named Dolly in 1997,research
    into cloning has grown rapidly.In May 1998,scientists in Massachusetts managed to
    create two identical calves（牛犊）using cloning technology. A mouse has also been
    cloned successfully.But the debate over cloning humans really started when Chicago
    physicist Richard Seed made a surprising announcement:"We will have managed to clone
    a human being within the next two years."he told the world.
    2 Seed's announcement provoked a lot of media attention,most of it negative,In Europe,
    nineteen nations have already signed an agreement banning human cloning and in the
    U.S. the President announced:"We will be introducing a law to ban all human cloning and
    many states in the U. S. will have passed anti-cloning laws by the end of the year."
    3 Many researchers are not so negative about cloning.They are worried that laws banning
    human cloning will threaten important research.In March,The New England Journal of
    Medicine called any plan to ban research on cloning humans seriously mistaken.Many
    researchers also believe that in spite of attempts to ban it,human cloning will have become
    routine by 2010 because it is impossible to stop the progress of science.
    4 Is there reason to fear that cloning will lead to a nightmare world?The public has been
    bombarded（轰炸）with newspaper articles, television shows and films, as well as
    cartoons.Such information is often misleading,and makes people wonder what on earth
    the scientists will be doing next.
    5 Within the next five to ten years scientists will probably have found a way of cloning
    humans.It could be that pretty soon we will be able to choose the person that we want our
    child to look like,But how would it feel to be a clone among hundreds,the anti-cloners
    ask. Pretty cool, answer the pro-cloners（赞成克隆的人）.

    Paragraph 2________
    A:Strong reactions
    B:Anxiety about the future if cloning
    C:The right to choose
    D:What id cloning?
    E:Arguments in favor of cloning
    F:A common sight

    答案：A
    解析：

  • 第6题：

    共用题干
    Cloning（克隆）:Future Pertect?

    1 A clone is an exact copy of a plant or animal produced from any one cell.Since Scottish
    scientists reported that they had managed to clone a sheep named Dolly in 1997,research
    into cloning has grown rapidly.In May 1998,scientists in Massachusetts managed to
    create two identical calves（牛犊）using cloning technology. A mouse has also been
    cloned successfully.But the debate over cloning humans really started when Chicago
    physicist Richard Seed made a surprising announcement:"We will have managed to clonen
    a human being within the next two years."he told the world.
    2 Seed's announcement provoked a lot of media attention,most of it negative.In Europe,
    nineteen nations have already signed an agreement banning human cloning and in the U.S.
    the President announced:"We will be introducing a law to ban all human cloning and many
    states in the U.S. will have passed anti-cloning laws by the end of the year."
    3 Many researchers are not so negative about cloning.They are worried that laws banning
    human cloning will threaten important research.In March,The New England
    Joumal of
    Medicine called any plan to ban research on cloning humans seriously mistaken.Many
    researchers also believe that in spite of attempts to ban it,human cloning will have become
    routine by 2010 because it is impossible to stop the progress of science.
    4 Is there reason to fear that cloning will lead to a nightmare world?The public has been
    bombarded（轰炸）with newspaper articles , television shows and films , as well as
    cartoons.Such information is often misleading,and makes people wonder what on earth
    the scientists will be doing next.
    5 Within the next five to ten years scientists will probably have found a way of cioning
    humans.It could be that pretty soon we will be able to choose the person that we want our
    child to look like.But how would it feel to be a clone among hundreds,the anti-cloners
    ask. Pretty cool , answer the pro-cloners（赞成克隆的人）.

    Richard Seed's announcement received_________.
    A:the nucleus of a cell
    B:cloned human beings
    C:a human being in two years
    D:a law to ban human cloning
    E:a report on human cloning
    F:heavy media coverage

    答案：F
    解析：

  • 第7题：

    His example（）that everyone can become a useful person in society so long as he is willing to work hard.

    Aexpresses

    Bthinks

    Cindicates  

    Dsupplies


    C
    略

  • 第8题：

    You notice that the elapsed time for an important database scheduler Job is unacceptably long. The job belongs to a scheduler job class and window. Which two actions would reduce the job's elapsed time?（）

    • A、Increasing the priority of the job class to which the job belongs
    • B、Increasing the job's relative priority within the Job class to which it belongs
    • C、Increasing the resource allocation for the consumer group mapped to the scheduler job's job class within the plan mapped to the scheduler window
    • D、Moving the job to an existing higher priority scheduler window with the same schedule and duration
    • E、Increasing the value of the JOB_QUEUE_PROCESSES parameter
    • F、Increasing the priority of the scheduler window to which the job belongs

    正确答案:B,C

  • 第9题：

    单选题
    There ______ lots of sheep and pigs on my uncle’s farm now.
    A

    was

    B

    were

    C

    is

    D

    are


    正确答案： C
    解析：
    句意：我叔叔的农场里现在有很多羊和猪。本题考查试题和there be句型。由题干末尾的now可知题干表示的是一般现在时，因此可排除A、B项。There be句型中be动词的选择遵循“就近原则”，sheep单复数同形，且在此处指复数含义，所以be动词用复数。因此D正确。

  • 第10题：

    单选题
    The text is probably written as ______.
    A

    a report of scientific progress to the general public.

    B

    an academic discussion of new possibilities in genetic science.

    C

    an argument for using pigs over sheep as transplant materials.

    D

    a look into advantages and disadvantages of cloning technology.


    正确答案： B
    解析：
    写作意图题。通读全文，全文用词简单，介绍了利用克隆技术为人类器官移植做贡献的研究，向人们普及科普知识，故此我们可以分析出这应该是一篇科普文，目标读者是普通大众，故答案为A项。

  • 第11题：

    单选题
    Which of the following would be an example of an externality as it is defined in Passage 2?
    A

    the extra revenue produced by increasing the price of a service

    B

    the annual cost of maintaining a municipal recycling program

    C

    the value of a beaver pelt in the wholesale market

    D

    the irritating noise caused by a neighbor's motorcycle

    E

    the salaries paid to environmental workers


    正确答案： B
    解析：
    这段话讲到外部效应属于成本和效应这一类，它们不是清晰的交换的一部分。只有D项不是清晰的经济交换的一部分。

  • 第12题：

    单选题
    A farmer imported several fine long wool Tomney sheep from Australia to breed with his Debouittet sheep in hopes of increasing the value of the flock’s wool. This is an example of ______.
    A

    pure-breeding

    B

    crossbreeding

    C

    reproducing

    D

    cloning


    正确答案： C
    解析：
    题干中描述到一位农民从澳大利亚进口了几只拥有优良长毛的Tomney sheep，然后让它们与他的Debouittet sheep进行繁殖，希望来增加羊群的羊毛价值，根据上题解析可知这属于crossbreeding（杂交）。

  • 第13题：

    Look ! Those ( )are eating green ( )under the tree.

    A、sheeps/ leafs

    B、sheeps/ leafes

    C、sheep/ leaves

    D、sheep/ leafs


    参考答案：C

  • 第14题：

    which of the following is not a native australian animal?

    A. Sheep.

    B. Kangaroo.

    C. Wombat.

    D. Koala.


    参考答案：A

  • 第15题：

    You notice that the elapsed time for an important database scheduler Job is unacceptably long.The job belongs to a scheduler job class and window.Which two actions would reduce the job‘s elapsed time?（）

    A. Increasing the priority of the job class to which the job belongs

    B. Increasing the job‘s relative priority within the Job class to which it belongs

    C. Increasing the resource allocation for the consumer group mapped to the scheduler job‘s job class within the plan mapped to the scheduler window

    D. Moving the job to an existing higher priority scheduler window with the same schedule and duration

    E. Increasing the value of the JOB_QUEUE_PROCESSES parameter

    F. Increasing the priority of the scheduler window to which the job belongs


    参考答案：B, C

  • 第16题：

    共用题干
    Cloning（克隆）:Future Perlect?

    1 A clone is an exact copy of a plant or animal produced from any one cell.Since Scottish
    scientists reported that they had managed to clone a sheep named Dolly in 1997,research
    into cloning has grown rapidly.In May 1998,scientists in Massachusetts managed to
    create two identical calves（牛犊）using cloning technology. A mouse has also been
    cloned successfully.But the debate over cloning humans really started when Chicago
    physicist Richard Seed made a surprising announcement:"We will have managed to clone
    a human being within the next two years."he told the world.
    2 Seed's announcement provoked a lot of media attention,most of it negative,In Europe,
    nineteen nations have already signed an agreement banning human cloning and in the
    U.S. the President announced:"We will be introducing a law to ban all human cloning and
    many states in the U. S. will have passed anti-cloning laws by the end of the year."
    3 Many researchers are not so negative about cloning.They are worried that laws banning
    human cloning will threaten important research.In March,The New England Journal of
    Medicine called any plan to ban research on cloning humans seriously mistaken.Many
    researchers also believe that in spite of attempts to ban it,human cloning will have become
    routine by 2010 because it is impossible to stop the progress of science.
    4 Is there reason to fear that cloning will lead to a nightmare world?The public has been
    bombarded（轰炸）with newspaper articles, television shows and films, as well as
    cartoons.Such information is often misleading,and makes people wonder what on earth
    the scientists will be doing next.
    5 Within the next five to ten years scientists will probably have found a way of cloning
    humans.It could be that pretty soon we will be able to choose the person that we want our
    child to look like,But how would it feel to be a clone among hundreds,the anti-cloners
    ask. Pretty cool, answer the pro-cloners（赞成克隆的人）.

    Richard Seed's announcement received_______.
    A:the nucleus of a cell
    B:cloned human beings
    C:a human being in two years
    D:a law to ban human cloning
    E:a report on human cloning
    F:heavy media coverage

    答案：F
    解析：

  • 第17题：

    He is a wolf in sheep's clothing,outwardly kind but inwardly vicious.

    A:shy
    B:wild
    C:ambitious
    D:evil

    答案：D
    解析：
    本句意思是：他是一只披着羊皮的狼，外表良善，内心狠毒。句中vicious 意为“凶残的”，如：He was a cruel and vicious man.他是一个残忍凶狠的男人。shy意为“害羞的”。wild意为“野生的、野蛮的”。ambitious意为“有野心的”，如：He is an ambitious young man full of enthusiasm and vitality.他是个充满热情与活力的有远大抱负的青年。evil意为“邪恶的”，如：He looked at her with an evil leer.他用不怀好意的目光看着她。只有选项D同句中画线词含义接近。

  • 第18题：

    Australia has several different climatic regions，from warm to( )and tropical.

    A.temperate
    B.subtropical
    C.humid
    D.continental

    答案：B
    解析：
    考查澳大利亚气候。澳大利亚的气候，因其地域广阔，所以呈多样化。题目中已给出温带和热带，所以过渡的气候为亚热带，即B项subtropical(亚热带的)符合题意。A项temperate (温和的)，C项humid (潮湿的)和D项continental (大陆的)均不符合题意。

  • 第19题：

    “绵羊”的英语单词是一下哪个（）

    • A、bull
    • B、lion
    • C、sheep

    正确答案:C

  • 第20题：

    单选题
    The little dancer from Australia looks ______ in the long skirt.
    A

    gently

    B

    happily

    C

    beautifully

    D

    lovely


    正确答案： C
    解析：
    句意：这个来自澳大利亚的小舞者穿着长长的裙子，看起来很可爱。由句中的“little dancer”和“long skirt”的对比可以推测，此处想要凸显的是小朋友穿着大衣服那种憨态可掬的感觉。故应选择D项lovely，意为“可爱的”。gently轻轻地；温柔地。happily开心地；幸福地。beautifully美丽地。

  • 第21题：

    单选题
    What is true about Dolly according to the text?
    A

    She was a lonely sheep in the first place.

    B

    She was manufactured out of the lab.

    C

    She was cloned from the cell of a mature sheep.

    D

    She was replaced by cloned piglets in terms of importance.


    正确答案： D
    解析：
    细节理解题。根据题干中的名字定位到第一段首句“Dolly was once an awfully lonely sheep.” ，由此可知，多利曾经是一只孤单的绵羊，但并没交代是什么阶段，A选项中的in the first place意为“起初，首先”，与文意不符；该段第二句提到“…she was the only mammal ever to be manufactured from the cell of an adult donor”，即多利是唯一一只由原体提取的细胞培养而成的哺乳动物，不能推出它是完全依靠实验室制造出来的，故B选项错误；mature sleep是adult donor的同义转述，故C选项为正确答案；文章最后一句话提到“For the present，even a little new transplant material is a big improvement over what’s available…”，即即使是一个细微的新的移植物在已有的技术基础上都将是一个重大的进步，两者都体现了科技的进步，没有将其重要性进行比较，故D选项错误。

  • 第22题：

    单选题
    George took _______of the fine weather to do a day's work in his garden.
    A

    advantage

    B

    profit

    C

    possession

    D

    charge


    正确答案： D
    解析：

  • 第23题：

    单选题
    Why has Australia always been a continent with few people?（）
    A

    Because Australia is too far away from Europe.

    B

    Because Australia is the least mountainous and most level of the world.s continents.

    C

    Because Australia is separated from the rest of the world by seas.

    D

    Because most of the continent is hot and dry.


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    His example（）that everyone can become a useful person in society so long as he is willing to work hard.
    A

    expresses

    B

    thinks

    C

    indicates  

    D

    supplies


    正确答案： B
    解析： 暂无解析

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