At night, plants _________carbon dioxide and at the same time _________oxygen. So, we may put some in our bedrooms to purify the air.

试卷相关题目

• 1--- Do you think it is hot today?     ---_______ , but not as hot as yesterday.

  A.No, not at all

  B.Yes, kind of

  C.Extremely

  D.Frequently

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• 2It is generally believed that teaching is ________ it is a science.

  A.an art much as

  B.much an art as

  C.as an art much as

  D.as much an art as

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• 3If he takes on this work, he will have no choice but ________ an even greater challenge.

  A.meets

  B.meeting

  C.meet

  D.to meet

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• 4You have no idea what I've had to ________ during the last few days.

  A.come through

  B.look through

  C.cut through

  D.go through

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• 5With the recent increase in tourism, our hometown has _______ a new look in recent years.

  A.taken up

  B.taken on

  C.taken in

  D.taken off

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• 6Jane tried to keep up a calm appearance, but her trembling voice ________ her _______.

  A.gave; in

  B.gave; out

  C.gave; up

  D.gave; away

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• 7The US first lady Michelle Obama gave speeches in Beijing University, which ________ Chinese students' heated discussions about going abroad for further study.

  A.turn on

  B.go down

  C.set off

  D.come up

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• 8When you rewrite the paragraph, I advise you to______ the last sentence as it is rather misleading.  

  A.point out

  B.make out

  C.leave out

  D.put out

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• 9In order to continue to learn by ourselves when we have left school, we must ______ learn how to study in the school now.

  A.in all

  B.after all

  C.above all

  D.at all

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• 10There is no need for you to go on a diet; you are only slightly overweight ______ your height.

  A.in case of

  B.in relation to

  C.in return for

  D.in response to

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