Cattle ________ one cause of the problems which many parts of the world have become deserts．

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• 1In that school, ________ of the disabled students are deaf and the rest ________ blind.

  A.two-thirds; are

  B.two-third; are

  C.second-three; is

  D.second-threes; is

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• 2______ information ______ been stored in this floppy disk．

  A.A large number of…have

  B.A great deal of…has

  C.Many a…has

  D.Plenty of…have

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• 3________ of the students are girls.

  A.Three fifth

  B.Third fifth

  C.Three fifths

  D.Third fifths

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• 4The population of the country ________ large, and two-fifths of it ________ workers.

  A.is; is

  B.are; are

  C.is; are

  D.are; is

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• 5When and where he was born _______．

  A.is unknown to us

  B.are unknown to us

  C.as is known to us all

  D.which are known to us all

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• 6The researcher said a part of the students ________ absent and part of the work ________ not finished.

  A.were; was

  B.were; were

  C.was; was

  D.was; were

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• 7The means as well as other means ________ in the experiment.

  A.have been tried

  B.has been tried

  C.have tried

  D.has tried

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• 8Bread and butter ________ my usual breakfast but in this shop ________ sold out.

  A.is ;it is

  B.is ;they are both

  C.are ;they are both

  D.are ;it is

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• 9The battle being over, the wounded ________ sent to the nearest field hospital, and the dead ________ buried.

  A.was; was

  B.were; were

  C.is; is

  D.are; are

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• 10The children each _______ a new colourful bicycle．

  A.has

  B.have

  C.had

  D.had had

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