When carbon is added to iron in proper ________ the result is steel.

试卷相关题目

• 1Doctors warned against chewing tobacco as a ________ for smoking.

  A.relief

  B.revival

  C.substitute

  D.succession

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• 2Joe is not good at sports, but when it ________ mathematics, he is the ‘best in the class.

  A.comes to

  B.comes up to

  C.comes on to

  D.comes around to

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• 3First published in 1927, the charts remain an ________ source for researchers.

  A.identical

  B.indispensable

  C.intelligent

  D.inevitable

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• 4His business was very successful, but it was at the ________ of his family life.

  A.consumption

  B.credit

  C.exhaustion

  D.expense

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• 5The board of the company has decided to ________ its operations to include all aspects of the clothing business.

  A.multiply

  B.lengthen

  C.expand

  D.stretch

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• 6You should try to ________ your ambition and be more realistic.

  A.reserve

  B.restrain

  C.retain

  D.replace

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• 7Nancy is only a sort of ________ of her husband’s opinion and has no ideas of her own.

  A.sample

  B.reproduction

  C.shadow

  D.echo

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• 8Now that spring is here, you can ________ these fur coats till you need them again next winter.

  A.put over

  B.put away

  C.put off

  D.put down

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• 9There is a ________ of impatience in the tone of his voice.

  A.hint

  B.notion

  C.dot

  D.phrase

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• 10Please ________ dictionaries when you are not sure of word spelling or meaning.

  A.seek

  B.inquire

  C.search

  D.consult

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