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exist　 A. experience 　B. examine　 　C. excite　　　 　D. explode

 

 

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科目：高中英語 來源： 題型：

Though ______, many laws of nature exist.

　 A. not having been discovered 　 B. having not been discovered

　 C. not having discovered 　    D. having not discovered

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科目：高中英語 來源： 題型：

Though ______, many laws of nature exist.

　 A. not having been discovered 　 B. having not been discovered

　 C. not having discovered 　     D. having not discovered

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科目：高中英語 來源： 題型：

Though ______, many laws of nature exist.

　 A. not having been discovered 　 B. having not been discovered

　 C. not having discovered 　 D. having not discovered

 

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科目：高中英語 來源： 題型：

Though ______, many laws of nature exist.

　 A. not having been discovered 　 B. having not been discovered

　C. not having discovered 　 D. having not discovered

 

查看答案和解析>>

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