Experts say it is an international trend to __________ MP2.5 to check air quality.

试卷相关题目

• 1At Christmas people _________ us to help the poor.

  A.appeal to

  B.aim at

  C.get into

  D.decide on

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• 2— I'm fed up with this rain. How I wish to go hiking this weekend! — Forget it. I'm afraid the wet days will _____.

  A.hold up

  B.keep up

  C.take up

  D.turn up

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• 3Your plan is far from satisfaction , so you must ______ more time and energy to it.

  A.earn

  B.spend

  C.devote

  D.waste

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• 4They are broadening the bridge to ____ the flow of traffic．

  A.put off

  B.speed up

  C.turn on

  D.work out

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• 5The agreement indicates that the two companies will _____ with each other again.

  A.team up

  B.keep up

  C.look up

  D.pick up

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• 6To our surprise, the 60-year-old granny _____ driver eventually and drives well.

  A.became

  B.has become

  C.turned

  D.has turned

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• 7I always _____ on life when listening to Beethoven's symphony.

  A.react

  B.recover

  C.reflect

  D.respond

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• 8Who do you think is the right person to ______the task?

  A.undergo

  B.undertake

  C.understand

  D.underline

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• 9The course books are _____ by four tapes, which are beneficial to beginners.

  A.adapted

  B.designed

  C.accompanied

  D.managed

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• 10It was quite a job for her to _________ several children all by herself during the war.

  A.dress up

  B.bring up

  C.tie up

  D.add up

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