______evidence that language - acquiring ability must be stimulated.

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问题 ______evidence that language - acquiring ability must be stimulated.

选项 A、It being
B、It is
C、There is
D、There being

答案C

解析 语法题。本题考查同位语从句的用法。句中的that从句是evidence的同位语从句。由此推断此前尚缺主句的(主语和)谓语,句子结构才完整。主句如为强调句型(it is evidence that…),则evidence必须要在从句中担任一语法成分,此句显然不是这种情况。那么,主句就只可能是there be句型了,evidence作主句的主语,也是后面同位语从句的先行词,故选C。
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