From space, the earth looks blue.This is ________about seventy－one percent of its surface is covered by water.

试卷相关题目

• 1The girl ________ is singing an English song in the next room is Tom's sister.

  A.whom

  B.which

  C.whose

  D.who

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• 2 —When choosing furniture, you only focus on function while I think more about the design. —That's ________ we differ.

  A.how

  B.what

  C.which

  D.where

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• 3 Willpower is a kind of quality, ________ is ________ it takes to do anything well.

  A.what; which

  B.what; what

  C.which; which

  D.which; what

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• 4 When the news came ________ the war broke out，he decided，to serve in the army.

  A.since

  B.which

  C.that

  D.because

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• 5I just wonder _______ that makes him so excited.

  A.why it does

  B.what it does

  C.how it is

  D.what it is

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• 6I can't figure out ________ it is that makes him so difficult at school.

  A.how

  B.what

  C.why

  D.which

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• 7Her son was accused of cheating by the police, ________ made it difficult for her to go to sleep.

  A.what

  B.as

  C.which

  D.where

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• 8It is uncertain ________ side effect the medicine will bring about，although about two thousand patients have taken it.

  A.that

  B.what

  C.how

  D.whether

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• 9________ the police thought he was the most likely one，since they had no exact proof about it，they could not arrest him.

  A.Although

  B.As long as

  C.If only

  D.As soon as

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• 10________ he has limited technical knowledge, the old worker has a lot of experience.

  A.Since

  B.Unless

  C.As

  D.Although

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