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    There has been ____rising demand for grain as ____industrial material in spite of the nation’s good harvests.


    1. A.
      /;an
    2. B.
      a;an
    3. C.
      the;an
    4. D.
      a;/
    B
    ：demand作为要求和请求时为可数名词；作为需要需求时为不可数名词，在惯用法中既可以说much demand,也可用 great/rising等形容词修饰。一些不可数名词前有形容词修饰时，前面用不定冠词。material与此类似。【标签】冠词用法
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    1. 1.

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    C
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