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    477] Though , many laws of nature exist. [译文] 尽管没被发现.许多自然规律还是存在的. A. not having been discovered B. having not been discovered C. not having discovered D. having not discovered [答案及简析] A. 当从句的主语与主句的主语一致.可以用分词短语化简. 【查看更多】

     

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