________ in certain types of fish and plants that live in extremely cold environments, these proteins prevent ice crystals from forming, ________ keeps the organisms from freezing to death．

试卷相关题目

• 1I will put the book __________ you placed it and make a mark at the place I put it．

  A.where; at which

  B.at which; at which

  C.where; which

  D.at which; where

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• 2He is going to buy the same notebook _______ I bought last week．

  A.as

  B.like

  C.when

  D.that

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• 3The fact ________ he failed in the exam is not the one ________ he told me．

  A.which; that

  B.that; that

  C.which; which

  D./; that

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• 4The emperor asked his officials to interpret his dream, ________ he gave the instruction ________ a group of officials should go on his behalf to find more about Buddha．

  A.in which ;what

  B.when ;which

  C.where ;which

  D.after which ;that

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• 5In our school there are more than 3000 students, about two fifths of ________ are girls．

  A.which

  B.them

  C.who

  D.whom

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• 6His parents would have sent him to school,but they ________ so poor．

  A.had been

  B.were

  C.have been

  D.are

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• 7These textbooks are students ________ native languages is not Chinese．

  A.of whom

  B.that

  C.which

  D.whose

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• 8It was his great devotion ________ his job ________ won him the great honor．

  A.of; that

  B.to; who

  C.to; that

  D.for; that

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• 9________ experience(Experience)is the mother of wisdom, ________ is well known in many European countries．

  A.A，that

  B.An，who

  C./，which

  D.The，that

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• 10Do you doubt ________ he comes here on time?

  A.that

  B.whether

  C.how

  D.when

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