There are some varieties of such particles,each（  ）up a different substance。

试卷相关题目

• 1There are six factories in this district,（  ）。

  A.witheach that has over 10,000 workers

  B.which thereare over 10,000 workers

  C.each having over 10,000workers

  D.witheach has over 10,000 workers

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• 2（  ）the inhabitants fled。

  A.The city been taken

  B.Havingtakencity

  C.The city being taken

  D.The city taken

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• 3（  ）how to find the place, I went to ask a policeman。

  A.Not knowing

  B.Knowingnot

  C.Not know

  D.Unknown

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• 4（  ）he worked very late at night。

  A.Having been choosing director

  B.Beingdirector

  C.Having chosen director

  D.Choosing director

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• 5There was so much noise that the speaker couldn’t make himself（  ）。

  A.hearing

  B.heard

  C.to hear

  D.being heard

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• 6Mr.Smith is not a fit person（  ）to supervise such a large office。

  A.to weak out

  B.to tun

  C.to manage

  D.to operate

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• 7Accustomed to climbing trees,（  ）。

  A.It wasnot difficult to reach the top

  B.I had no difficulty reaching the top

  C.the top was not difficult to reach

  D.to reach the top was not difficult

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• 8She said in her letter that she’d appreciate（  ）from you soon。

  A.to hearing

  B.hearing

  C.having heard

  D.to hear

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• 9Do you remember（  ）to Professor Smith during your last visit。

  A.to have beenintroduced

  B.having introduced

  C.being introduced

  D.to be introduced

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• 10The gas,if（  ）some air, burns rapidly。

  A.mix

  B.mixed with

  C.mix with

  D.mixing

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