Though______, many laws of nature exist.A、not having been discoveredB、having no

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问题 Though______, many laws of nature exist.

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

答案 A

解析本题考查分词短语作状语。此句为连词加现在分词短语作状语，等于：Though the laws of nature have not been discovered，many laws of nature exist。

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