问题 选择题

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

A.if taking

B.if taken

C.if to take

D.if being taken

答案

答案:B

考查分词用法。Take与drug构成被动关系,所以使用过去分词。句意:一般说来,如果按照说明服用,这种药物是没有副作用的。

单项选择题
单项选择题