The problem of air pollution is becoming more serious ______ the increasing number of cars.

试卷相关题目

• 1For miles around me ,there was nothing but a desert, without a single plant or tree _____ .

  A.on earth

  B.in sight

  C.for distance

  D.at place

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• 2people have always been curious ______ how living things on the earth exactly began.

  A.in

  B.at

  C.of

  D.about

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• 3I am sorry to say that our food is almost______. We cannot survive if there is no one to help us.

  A.by the end

  B.at an end

  C.in the end

  D.at the end

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• 4________ of this term, we will have learnt 4 books.

  A.At the end

  B.By the end

  C.In the end

  D.At an end

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• 5______ the help of an American teacher, we can learn real English.

  A.With

  B.By

  C.In

  D.For

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• 6More high-rise buildings are being built now even in some small cities _____ space.

  A.in search of

  B.in place of

  C.for lack of

  D.for fear of

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• 7The computer system broke _____ suddenly while he was searching for information on the Internet．

  A.down

  B.out

  C.up

  D.in

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• 8It is greatly ______ your credit that you have overcome such difficulties.

  A.to

  B.for

  C.with

  D.in

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• 9The man dressed _____ jeans is an expert _____ unlocking doors and he can open a door ______ difficulty.

  A.in, on, with

  B.on, at, with

  C.in, on, without

  D.in, at, without

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• 10Be careful when you surf the Internet．If you download a virus into your computer ______, you will not open your files．

  A.on purpose

  B.by accident

  C.at random

  D.on average

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