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

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• 1The 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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• 2“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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• 3Of all the pens he tried, only one is_______.

  A.satisfy

  B.satisfactory

  C.satisfied

  D.satisfaction

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• 4The rainiest said, “We are ready for discussion with any legal parties, but we'll never ______ with enemies.”

  A.compromise

  B.quarrel

  C.argue

  D.consult

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• 5The old lady was ________at the thought of the ________experience in the forest.  

  A.terrified；terrifying

  B.terrifying；terrified

  C.terrified；terrified

  D.terrifying；terrifying

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• 6Don'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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• 7It 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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• 8Shelly had prepared carefully for her biology examination so that she could be sure of passing it at her first ______ .

  A.intention

  B.effort

  C.attempt

  D.sight

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• 9It 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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• 10You 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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