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Generally speaking,        according to the directions, the drug has no side effect.

A. when taking      B. when taken     C. when to take     D. when to be taken  

 

【答案】

B

【解析】

试题分析:句意:一般地说,当按照说明书来服药的话,药就没有副作用。这里空格处是省略句,完整的是when it is taken according to the directions;整个句子的主语是drug,当从句的主语与主句的主语一致,并且从句的谓语动词有be时,这时可以把主语和be都省去,这里drug与take之间是被动关系,故用被动语态,这里可以用it代替the drug,把it is省去了,故选B。

考点:考查省略的用法。

 

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