With the miniaturization of the structural components the weight of these electric deviceshas decreased（）30 percent.

试卷相关题目

• 1This month the production of stainless steel in our steelworks has increased（）2,000tons.

  A.With

  B.in

  C.on

  D.by

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• 2Three-fourths of the surface of the earth（）covered with water.

  A.Are

  B.is

  C.were

  D.be

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• 3She went to the countryside（）.

  A.in the morning at nine/on June first4968

  B.on June first, 1968/in the morning at nine

  C.at nine in the morning/on June first,1968

  D.on June first,1968/at nine in the morning

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• 4Consult（）for questions about earthquakes.

  A.the six index

  B.index six

  C.sixth index

  D.index numbering six

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• 5（）of the buildings were ruined.

  A.Three fourth

  B.Three four

  C.Three-fourths

  D.Three-four

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• 6The Olympic Games are held（）.

  A.every four years

  B.every four year

  C.every fourth years

  D.every four-years

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• 7As he is not in good health, he goes to his factory only（）just to learn something about the progress of experiment.

  A.once a week

  B.one week

  C.one time a week

  D.one a week

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• 8Three students（）in this university come from the South.

  A.of ten

  B.out of in ten

  C.out of ten

  D.in tens

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• 9Strings of the same thickness made of nylon are（）

  A.five times stronger than those

  B.five time stronger than thoseB.five times strong than those D.five times stronger as those

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• 10the wheels of the old wagon are nearly（）those of a modern car.

  A.twice the size of

  B.twice size of

  C.twice sizes of

  D.twice the size of

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