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A fuel is a substance used ______ light, heat, or energy.

[  ]

A. generating  B. generates  C. to generate  D. it is generating

答案:C
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Directions: For each blank in the following passage there are four words or phrases marked A,B,C and D. Fill in each blank with a word or phrase that best fits the context.

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Scientists have studied the reactions of men to one another during long submarine voyages. They have also found that the longer the voyage lasts, the more serious the problem of  40  is. When men are  41  together for a long period, they begin to feel   42   . Everyone has little habits of speaking and behaving that are ordinarily acceptable. In the limited space over a long period of time, however, these little habits may become very   43  .

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A. So far       B. After all           C. However         D. Therefore

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C. Because it is easy to get it from all kinds of ways.      

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Why 2012 was the best year ever

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A fuel is a substance used ______ light, heat, or energy.


  1. A.
    generating
  2. B.
    generates
  3. C.
    to generate
  4. D.
    it is generating

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