One theory, ________ suggested by Harvard University, is that humans began cooking their food, thereby releasing nutrients locked in the raw food and reducing the time needed to chew it.

试卷相关题目

• 1It was not until 1945, ______ the Second World War came to an end, ____ people began to realize the eventual coming of peace.

  A.when; which

  B.when; that

  C.that; which

  D.that; that

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• 2________ it rain tomorrow, we would have to put off the sports meeting.

  A.Were

  B.Would

  C.Does

  D.Should

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• 3—______ bargaining is always such great fun? —Usually people consider it a test to see who can stand their ground longer.

  A.What is it that

  B.Why is it that

  C.What it is that

  D.Why it is that

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• 4The old man has two sons，________is a soldier.

  A.one of whom

  B.both of them

  C.all of whom

  D.both of whom

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• 5If Tom had spent more time studying, he ______ able to do well in the test now.

  A.will be

  B.would be

  C.has been

  D.would have been

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• 6This restaurant has an inviting, homelike atmosphere ______ many others are short of.

  A.where

  B.when

  C.that

  D.what

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• 7I really don't know ________ I put my wallet after I paid the bill.

  A.where was it

  B.it was where that

  C.where it was that

  D.where was it that

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• 8Many college graduates are willing to start online shops to get over the period ________ they have difficulty finding a satisfactory job.

  A.where

  B.when

  C.which

  D.that

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