There has been rising demand for grain as industrial material in spite of the nati

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

A./;an B.a;an C.the;an D.a;/

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解析:

：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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There has been rising demand for grain as industrial material in spite of the nati