With the word 'PM2.5'______ heard and seen in our life, people become more and more concerned about air pollution.

试卷相关题目

• 1The witnesses ______ by the police just now gave very different descriptions of the fight.

  A.being questioned

  B.questioned

  C.to be questioned

  D.having questioned

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• 2He _______a good idea finally.

  A.came up with

  B.came up

  C.came to

  D.came with

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• 3According to scientists, our mental abilities begin to _______ from the age of 27 after reaching the highest level at 22．

  A.decline

  B.differ

  C.fail

  D.shrink

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• 4The wounded soldier died _____I had a chance to know his name and family.

  A.after

  B.while

  C.until

  D.before

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• 5Glass is obviously a wiser choice for the plate as it can easily be recycled and does not take hundreds of years to _____ like plastic.

  A.break off

  B.break out

  C.break down

  D.break into

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• 6---I am taking my driving test tomorrow! ---__________!

  A.Cheers

  B.Good luck

  C.Come on

  D.congratulations

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• 7She reached the top of the hill and stopped ____ on a big rock by the side of the path.

  A.to have rested

  B.resting

  C.to rest

  D.rest

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• 8---Excuse me, has the train from Beijing arrived yet? --- ________, you are three quarters earlier. It's only 9 now.

  A.Unconsciously

  B.Instantly

  C.Absolutely

  D.Actually

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• 9—We________gas.I'm afraid we can't go much further. —I know there's a gas station ahead.Sure it will last us until we get there.

  A.are running out　

  B.have run out

  C.are running out of

  D.have run out of

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• 10There's no way of knowing why one man makes an important discovery ______ another man, also intelligent, fails.

  A.since

  B.if

  C.as

  D.while

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