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。