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    【题目】With time going by, we have come to realize that creativity is it takes to keep a nation highly competitive.

    A. what B. how C. why D. that

    【答案】A

    【解析】

    试题分析：考查名词性从句。本题what引导表语从句what it takes to keep a nation highly competitive.并在句中做takes的宾语。句意：随着时间的流逝，我们逐渐意识到创造性是让一个国家有竞争力需要的事情。故A正确。

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