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No one knows exactly when the first whee...

No one knows exactly when the first wheel ________ or what it was used for.

A.was come into being B.came in existence

C.came into existence D.was existed

 

C 【解析】 考查时态。句意:没有人确切知道第一个轮子是什么时候出现的,也不知道它是用来做什么的。根据空后谓语动词was used for.可知,空处谓语动词需一般过去式,表示过去发生的事情;come into existence“出现”,固定短语,所以选项B表达错误,选项A的时态错误;come into being存在;exist存在,不及物动词,没有被动语态,所以选项D错误。故选C。  
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