Shelly had prepared carefully for her biology examination so that she could be sure of passing it at her first ______ .

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• 1It is reported that the US uses ______ energy as the whole of Europe.

  A.as twice

  B.twice much

  C.twice much as

  D.twice as much

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• 2Don't blame them any more-this is ______ because they are still young and lack experience.

  A.exactly

  B.simply

  C.eventually

  D.generally

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• 3______ of the earth's surface ______ covered with water.

  A.Two-third; is

  B.Two-third; are

  C.Two-thirds; is

  D.Two-thirds; are

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• 4The world's population has grown by ______ it was in 1800.   

  A.more than six times that

  B.six times more than that

  C.more than six times what

  D.six times as many as

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• 5“This month our family has used ______ water as we did last month.” said Mother .

  A.as twice as much

  B.more than twice

  C.twice as much as

  D.more than twice as much

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• 6It is estimated that there are more than 40 universities in Britain--nearly ______ in 1960.

  A.as twice many as

  B.as many twice as

  C.twice many as

  D.twice as many as

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• 7You stepped into the lab with your shoes on? You're _______ to take them off before you enter it.

  A.invited

  B.supposed

  C.forbidden

  D.permitted

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• 8We know that the Black Sea, one thousand years ago, was a fresh water lake about ________ and unconnected with the Mediterranean.

  A.its two thirds present size

  B.two-thirds size of the present

  C.its two-thirds of the present size

  D.two- thirds its present size

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• 9A night in a hotel in Shanghai costs ______ a week in some faraway cities.

  A.as much as three times

  B.three times the price of

  C.the three times price of

  D.as much three times as

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• 10__________of the land in that district __________ covered with trees and grass．

  A.Two fifth; is

  B.Two fifths; is

  C.Two fifth; are

  D.Two fifths; are

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