______, many laws of nature actually exist.A、Having not discoveredB、Not having

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问题 ______, many laws of nature actually exist.

选项 A、Having not discovered
B、Not having discovered
C、Having not been discovered
D、Not having been discovered

答案 D

解析分词作状语时，否定词一般要放在分词前。本句的主语是many laws of nature，它也是分词短语的逻辑主语，它们之间的关系是完成被动关系，因此选D项。

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