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All life on our planet ________, in one way or another, upon the sun.

A. depend

B. depending

C. depends

D. depended

 

答案:C
解析:

主语是单数,故用单数形式。

 


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    1. A.
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    1. A.
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      species are becoming fewer and fewer day by day
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      rainforests are being cut down every day
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      nature is full of mysteries
  3. 3.

    Edward O. Wilson thinks that ________

    1. A.
      it doesn’t matter to reduce biodiversity
    2. B.
      people have done enough to preserve biodiversity
    3. C.
      the situation of biodiversity is very serious
    4. D.
      biodiversity loss has become irreversible
  4. 4.

    When it comes to biodiversity, the present problem is that ________

    1. A.
      people might not clearly know what is biodiversity and what should be protected
    2. B.
      people are not aware that giant pandas are endangered
    3. C.
      people don’t realize that biodiversity is vital to everyday life
    4. D.
      people hunt sea creatures for food
  5. 5.

    What does the underlined word “It” in paragraph 5 refer to?

    1. A.
      The UK government
    2. B.
      The concept of biodiversity
    3. C.
      The action to deal with the problem
    4. D.
      The Guardian newspaper

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