（2007上海﹚The traditional view is ______ we sleep because our brain is “programmed” to make us do so.

试卷相关题目

• 1（2007上海﹚Small sailboats can easily turn over  in the water  ______ they are not managed carefully.

  A.though

  B.before

  C.until

  D.if

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• 2（2007上海﹚Leaves are found on all kinds of trees, but they differ greatly ______ size and shape.

  A.on

  B.from

  C.by

  D.in

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• 3（2007上海﹚______ he referred to in his article was unknown to the general reader.

  A.That

  B.What

  C.Whether

  D.Where

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• 4（2007北京﹚This is a junior school. You should go to a senior school ______ girls of your age.

  A.for

  B.about

  C.from

  D.to

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• 5（2007北京﹚Leave your key with a neighbor ______ you lock yourself out one day.

  A.ever since

  B.even if

  C.soon after

  D.in case

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• 6（2007天津﹚ ______ fire, all exits must be kept clear.

  A.In place of

  B.Instead of

  C.In case of

  D.In spite of

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• 7（2007天津﹚It is difficult for us to learn a lesson in life ______ we’ve actually had that lesson.

  A.until

  B.after

  C.since

  D.when

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• 8（2007安徽﹚The field research will take Joan and Paul about five months; it will be a long time _____we meet them again.

  A.after

  B.before

  C.since

  D.when

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• 9（2007湖北﹚People try to avoid public transportation delays by using their own cars, and this ______ creates further problems.

  A.in short

  B.in case

  C.in doubt

  D.in turn

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• 10（2007江西﹚Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.

  A.of; at

  B.by; in

  C.of; on

  D.on; at

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