练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情

    Most plants need sunlight just ________ they need water.


    1. A.
      because
    2. B.
      when
    3. C.
      as
    4. D.
      for
    C
    练习册系列答案
    年级 高中课程 年级 初中课程
    高一 高一免费课程推荐！ 初一 初一免费课程推荐！
    高二 高二免费课程推荐！ 初二 初二免费课程推荐！
    高三 高三免费课程推荐！ 初三 初三免费课程推荐！
    相关习题

    科目：高中英语 来源：广西南宁二中2010届高三下学期第二次模拟考试英语试题 题型：050

    阅读理解

    　　Every year farmers in areas which often suffer flood in Southeast Asia lose millions of tons of rice to high water that kills their crops．That large amount of waste may soon be a thing of the past：SUBIA, a gene discovered by researchers which the International Rice Research Insitule(IRRI)and the University of California, allows rice palnts carrying the gene to live completely under water for two weeks．

    　　Flood–resistant(抗水浸)rice turned up among the 110,000 types of seed stored at the institute．It produced disappointingly low yields(产量), but scientistis were able to transfer the gene into more bountiful varieties．These have shown promising results in tests by growers in India and Bangladesh over the past two years．

    　　This rice success story would not have been possible without the treasure of genetic diversity hidden in the IRRI's vault(underground room)．As the world faces new agricultural challenge – charging climate, bugs and diseases that have developed resistance(抵抗力)to old defenses–such genetic resources are likely to become increasingly valuable．Fortunately, the IRRI is one of more than 1,000 organizations around the world working to protect crop genes．Most plant species grown for food have an associated bank that stores thousands of samples; seeds of landraces, wild relatives, and varieties that are rare, old, or adapted to very specific envionments．The banks ensure that it will be possible to develop new varieties in the future．

    　　The need for these botanical libraries has its roots in modern agricultural practices．According to the U．N．Food and Agriculture Organization, 75 percent of plant diversity has been lost over the last century．Of more than 30,000 eatable species, humans grow just 200 for food; 60 percent of plant calories in our diet comes from wheat, rice, and corn．

    (1)

    Accordint to the second paragraph, what can we learn about the flood – resistant rice?

    [　　]

    A．

    It produces a small amount of rice．

    B．

    Scientists have developed many more varieties of it．

    C．

    Sientists have managed to improve its output．

    D．

    It can produce more rice than the other 110,000 types at the institute．

    (2)

    From the passage we can infer that ________．

    [　　]

    A．

    the newly – discovered gene will bring hope to the farmers in the areas often suffering flood

    B．

    scientists will not be able to change the fact that rice plants carrying the gene produce low yields

    C．

    the tests by growers in India and Bangladesh were hopeless

    D．

    110,000 types of seed stored at the Institute are flood-resistant

    (3)

    What's the main idea of the third paragraph?

    [　　]

    A．

    The world faces new agricultural challenges．

    B．

    Such genetic resources are likely to become valuable．

    C．

    Scientists set up banks to store thousands of seed samples．

    D．

    We should owe the rice success story to the seed banks．

    (4)

    As to the botanical libraries, the writer thinks they are ________．

    [　　]

    A．

    useless

    B．

    unnecessary

    C．

    needful

    D．

    needless

    查看答案和解析>>

    科目：高中英语 来源：广西陆川中学2010届高三下学期第三次模拟考试 题型：阅读理解


    E
    Every year farmers in areas which often suffer flood in Southeast Asia lose millions of tons of rice to high water that kills their crops. That large amount of waste may soon be a thing of the past: SUBIA, a gene discovered by researchers which the International Rice Research Insitule (IRRI) and the University of California, allows rice palnts carrying the gene to live completely under water for two weeks.
    Flood – resistant(抗水浸) rice turned up among the 110,000 types of seed stored at the institute. It produced disappointingly low yields(产量) , but scientistis were able to transfer the gene into more bountiful varieties. These have shown promising results in tests by growers in India and Bangladesh over the past two years.
    This rice success story would not have been possible without the treasure of genetic diversity hidden in the IRRI’s vault (underground room). As the world faces new agricultural challenge – charging climate, bugs and diseases that have developed resistance(抵抗力) to old defenses – such genetic resources are likely to become increasingly valuable. Fortunately, the IRRI is one of more than 1,000 organizations around the world working to protect crop genes. Most plant species grown for food have an associated bank that stores thousands of samples; seeds of landraces, wild relatives, and varieties that are rare, old, or adapted to very specific envionments. The banks ensure that it will be possible to develop new varieties in the future.
    The need for these botanical libraries has its roots in modern agricultural practices. According to the U. N. Food and Agriculture Organization, 75 percent of plant diversity has been lost over the last century. Of more than 30,000 eatable species, humans grow just 200 for food; 60 percent of plant calories in our diet comes from wheat, rice, and corn.
    72．Accordint to the second paragraph, what can we learn about the flood – resistant rice?
    A．It produces a small amount of rice.
    B．Scientists have developed many more varieties of it.
    C．Sientists have managed to improve its output.
    D．It can produce more rice than the other 110,000 types at the institute.
    73．From the passage we can infer that        .
    A．the newly – discovered gene will bring hope to the farmers in the areas often suffering flood
    B．scientists will not be able to change the fact that rice plants carrying the gene produce low yields
    C．the tests by growers in India and Bangladesh were hopeless
    D．110,000 types of seed stored at the Institute are flood -  resistant
    74．What’s the main idea of the third paragraph?
    A．The world faces new agricultural challenges.
    B．Such genetic resources are likely to become valuable.
    C．Scientists set up banks to store thousands of seed samples.
    D．We should owe the rice success story to the seed banks.
    75．As to the botanical libraries, the writer thinks they are            .
    A．useless      B．unnecessary      C．needful     D．needless

    查看答案和解析>>

    科目：高中英语 来源：0120 模拟题 题型：阅读理解

    阅读理解。
         Every year farmers in areas which often suffer flood in Southeast Asia lose millions of tons of rice to
    high water that kills their crops. That large amount of waste may soon be a thing of the past: SUBIA, a gene
    discovered by researchers which the International Rice Research Institute (IRRI) and the University of
    California, allows rice plants carrying the gene to live completely under water for two weeks.
         Flood - resistant (抗水浸) rice turned up among the 110,000 types of seed stored at the institute. It
    produced disappointingly low yields (产量), but scientists were able to transfer the gene into more bountiful
    varieties. These have shown promising results in tests by growers in India and Bangladesh over the past two
    years.
         This rice success story would not have been possible without the treasure of genetic diversity hidden in
    the IRRI's vault (underground room). As the world faces new agricultural challenge-charging climate, bugs
    and diseases that have developed resistance (抵抗力) to old defenses - such genetic resources are likely to
    become increasingly valuable. Fortunately, the IRRI is one of more than 1,000 organizations around the world
    working to protect crop genes. Most plant species grown for food have an associated bank that stores
    thousands of samples; seeds of landraces, wild relatives, and varieties that are rare, old, or adapted to very
    specific environments. The banks ensure that it will be possible to develop new varieties in the future.
         The need for these botanical libraries has its roots in modern agricultural practices. According to the U. N.
    Food and Agriculture Organization, 75 percent of plant diversity has been lost over the last century. Of more
    than 30,000 eatable species, humans grow just 200 for food; 60 percent of plant calories in our diet comes
    from wheat, rice, and corn.
    1. According to the second paragraph, what can we learn about the flood-resistant rice?
    A. It produces a small amount of rice.
    B. Scientists have developed many more varieties of it.
    C. Scientists have managed to improve its output.
    D. It can produce more rice than the other 110,000 types at the institute.
    2. From the passage we can infer that _____.
    A. the newly - discovered gene will bring hope to the farmers in the areas often suffering flood
    B. scientists will not be able to change the fact that rice plants carrying the gene produce low yields
    C. the tests by growers in India and Bangladesh were hopeless
    D. 110,000 types of seed stored at the Institute are flood - resistant
    3. What's the main idea of the third paragraph?
    A. The world faces new agricultural challenges.
    B. Such genetic resources are likely to become valuable.
    C. Scientists set up banks to store thousands of seed samples.
    D. We should owe the rice success story to the seed banks.
    4. As to the botanical libraries, the writer thinks they are _____.

    A. useless
    B. unnecessary
    C. needful
    D. needless

    查看答案和解析>>

    科目：高中英语 来源： 题型：阅读理解

    E

           Every year farmers in areas which often suffer flood in Southeast Asia lose millions of tons of rice to high water that kills their crops. That large amount of waste may soon be a thing of the past: SUBIA, a gene discovered by researchers which the International Rice Research Insitule (IRRI) and the University of California, allows rice palnts carrying the gene to live completely under water for two weeks.

           Flood – resistant(抗水浸) rice turned up among the 110,000 types of seed stored at the institute. It produced disappointingly low yields(产量) , but scientistis were able to transfer the gene into more bountiful varieties. These have shown promising results in tests by growers in India and Bangladesh over the past two years.

           This rice success story would not have been possible without the treasure of genetic diversity hidden in the IRRI’s vault (underground room). As the world faces new agricultural challenge – charging climate, bugs and diseases that have developed resistance(抵抗力) to old defenses – such genetic resources are likely to become increasingly valuable. Fortunately, the IRRI is one of more than 1,000 organizations around the world working to protect crop genes. Most plant species grown for food have an associated bank that stores thousands of samples; seeds of landraces, wild relatives, and varieties that are rare, old, or adapted to very specific envionments. The banks ensure that it will be possible to develop new varieties in the future.

           The need for these botanical libraries has its roots in modern agricultural practices. According to the U. N. Food and Agriculture Organization, 75 percent of plant diversity has been lost over the last century. Of more than 30,000 eatable species, humans grow just 200 for food; 60 percent of plant calories in our diet comes from wheat, rice, and corn.

    72．Accordint to the second paragraph, what can we learn about the flood – resistant rice?

           A．It produces a small amount of rice.

           B．Scientists have developed many more varieties of it.

           C．Sientists have managed to improve its output.

           D．It can produce more rice than the other 110,000 types at the institute.

    73．From the passage we can infer that        .

           A．the newly – discovered gene will bring hope to the farmers in the areas often suffering flood

           B．scientists will not be able to change the fact that rice plants carrying the gene produce low yields

           C．the tests by growers in India and Bangladesh were hopeless

           D．110,000 types of seed stored at the Institute are flood -  resistant

    74．What’s the main idea of the third paragraph?

           A．The world faces new agricultural challenges.

           B．Such genetic resources are likely to become valuable.

           C．Scientists set up banks to store thousands of seed samples.

           D．We should owe the rice success story to the seed banks.

    75．As to the botanical libraries, the writer thinks they are            .

           A．useless      B．unnecessary      C．needful     D．needless

    查看答案和解析>>

    科目：高中英语 来源： 题型：阅读理解

    Every year farmers in areas which often suffer flood in Southeast Asia lose millions of tons of rice to high water that kills their crops．That large amount of waste may soon be a thing of the past: SUBIA, a gene discovered by researchers which the International Rice Research Insitule （IRRI）and the University of California, allows rice plants carrying the gene to live completely under water for two weeks．

           Flood – resistant（抗水浸）rice turned up among the 110,000 types of seed stored at the institute． It produced disappointingly low yields（产量）, but scientists were able to transfer the gene into more bountiful varieties．These have shown promising results in tests by growers in India and Bangladesh over the past two years．

           This rice success story would not have been possible without the treasure of genetic diversity hidden in the IRRI’s vault （underground room）．As the world faces new agricultural challenge – charging climate, bugs and diseases that have developed resistance（抵抗力） to old defenses – such genetic resources are likely to become increasingly valuable．Fortunately, the IRRI is one of more than 1,000 organizations around the world working to protect crop genes．Most plant species grown for food have an associated bank that stores thousands of samples; seeds of landraces, wild relatives, and varieties that are rare, old, or adapted to very specific environments．The banks ensure that it will be possible to develop new varieties in the future．

           The need for these botanical libraries has its roots in modern agricultural practices．According to the U．N．Food and Agriculture Organization, 75 percent of plant diversity has been lost over the last century．Of more than 30,000 eatable species, humans grow just 200 for food; 60 percent of plant calories in our diet comes from wheat, rice, and corn．

    1．According to the second paragraph, what can we learn about the flood – resistant rice?

           A．It produces a small amount of rice．

           B．Scientists have developed many more varieties of it．

           C．Scientists have managed to improve its output．

           D．It can produce more rice than the other 110,000 types at the institute．

    2．From the passage we can infer that        ．

      A．the newly – discovered gene will bring hope to the farmers in the areas often suffering flood

           B．scientists will not be able to change the fact that rice plants carrying the gene produce low yields

           C．the tests by growers in India and Bangladesh were hopeless

           D．110,000 types of seed stored at the Institute are flood -  resistant

    3．What’s the main idea of the third paragraph?

           A．The world faces new agricultural challenges．

           B．Such genetic resources are likely to become valuable．

           C．Scientists set up banks to store thousands of seed samples．

           D．We should owe the rice success story to the seed banks．

    4．As to the botanical libraries, the writer thinks they are            ．

           A．useless        B．unnecessary          C．needful          D．needless

    查看答案和解析>>

    同步练习册答案