发布时间: 2016年03月21日
词汇选项
Exercise ______ involves play and recreation,and relieves nervous tension and mental fatigue in so doing, is not only pleasant but beneficial.
A.which
B.where
C.when
D.why
【正确答案】A
【答案解析】从语法上分析,主句主语exercise的谓语应该是is not only pleasant but beneficial,中间显然应该是一个定语从句,定语从句所缺少的是主语,故应选A..