They were __________ to produce carbon,nitrogen,water and other gases.

试卷相关题目

• 1Jack used to work in a garage for a full 10 years, so he fixed the broken engine ______ ease.

  A.in

  B.with

  C.on

  D.beyond

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• 2He could see the tall chimneys of the factory _________.

  A.from distance

  B.in distance

  C.in the distance

  D.to a distance

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• 3We must set a limit __________ the expense of the trip.

  A.to

  B.on

  C.for

  D.with

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• 4Through the open window we saw on the floor the happy father lying ________ his stomach, his daughter riding excitedly on his back.

  A.on

  B.with

  C.above

  D.from

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• 5Jay Chou,a young singer,is quite popular ______the public. He's made a remarkable achievement ______a boy of his age.

  A.with ,to

  B.to ,for

  C.with ,for

  D.for ,to

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• 6Success in life doesn't happen________. It's the result of devoting your time and energy to what you've set out to do.

  A.by force

  B.by design

  C.by accident

  D.by choice

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• 7______, the party which the old professor attended last Saturday was pleasant.

  A.Above all

  B.In all

  C.All in all

  D.At all

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• 8Nelson Mandela, who had been _____ for 27 years, received the Nobel Prize ________ Peace in 1993.

  A.in prison; for

  B.put in prison; of

  C.thrown into prison; to

  D.sent to prison; in

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• 9The company has changed some of its working practices__________complaints and criticism from the customers.

  A.in respect to

  B.in return for

  C.in exchange for

  D.in response to

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• 10A transistor radio is sometimes very small. It is very easy to carry…_______, radio broadcasts are better for blind people.

  A.Besides

  B.However

  C.Yet

  D.Sometimes

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