Carbon dioxide，which makes a________between us and the sun，prevents heat from getting out of the atmosphere easily，so the earth is becoming warmer.

试卷相关题目

• 1Preparing the final test paper _______ his whole afternoon.

  A.takes up

  B.takes off

  C.takes on

  D.takes over

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• 2Experts insist that packets of cigarettes come with a health warning ______ to them.

  A.be attached

  B.attach

  C.attached

  D.attaching

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• 3Armed with the information you have gathered, you can ______ preparing your business plan.

  A.set out

  B.set up

  C.set off

  D.set about

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• 4No matter what happens, you should keep _______. Just look on the bright side of things.

  A.generous

  B.optimistic

  C.careful

  D.practical

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• 5 Vehicle designers are well aware that they need to ______ the idea of cars that have a low environmental impact.

  A.end up with

  B.put up with

  C.keep up with

  D.come up with

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• 6A good listener takes part in the conversation，________ ideas and raising questions to keep the talk flowing.

  A.realizing

  B.copying

  C.offering

  D.misunderstanding

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• 7—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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• 8The interesting story is completely made up by myself.If there is any similarity to yours，it is all by________．

  A.purpose

  B.coincidence

  C.design

  D.reputation

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• 9Glass 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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• 10-----Must I go there right now?   -----No, you _____. You ____go there before supper.

  A.mustn't , need

  B.needn't, may

  C.can't ,need

  D.won't, can

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