Some plants can take in carbon dioxide we breathe out and give ______ oxygen to us.

试卷相关题目

• 1The engine of the bus was ______，and the bad weather added to the worries of the passengers.

  A.in vain

  B.in good condition

  C.out of work

  D.out of order

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• 2—Do you think it a good thing if too high house prices can't be brought under control . —________，it was bad.

  A.In other words

  B.On the other hand

  C.On the contrary

  D.In the meanwhile

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• 3The form cannot be signed by anyone ______ yourself.  

  A.rather than

  B.better than

  C.more than

  D.other than

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• 4Scientists are convinced ________the positive effect of laughter________ physical and mental          health.

  A.of; at

  B.of; on

  C.by; in

  D.on; at

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• 5Although he is very young, he is much more experienced than others _____ working ability.

  A.in praise of

  B.in terms of

  C.in need of

  D.in search of

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