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Some green beans, ______ long enough, ca...

Some green beans, ______ long enough, can be poisonous (有毒的).

A. if not be cooked     B. if not cooked     C.if not cooking   D.if not being cooked

 

B 【解析】 试题分析:句意:一些绿豆如果煮的时间不够久.可能会有毒。这里是表条件,而且是被动语态,相当于:Some green beans,if they are not cooked long enough, can be poisonous (有毒的). 当主从句的主语一致的时候,可以省略从句的主语和be动词,所以是B。 考点:考查状语从句的省略  
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