问题
选择题
There is no doubt _______ nearsightedness is a serious problem among the youth of our country.
A./
B.which
C.whether
D.that
答案
D
题目分析:句意:毫无疑问近视在我们国家的年轻人之间是个严重的问题。There is no doubt that…毫无疑问…,doubt后面是同位语从句,因为是没有怀疑,所以后面是肯定的,用that,如果是There is doubt后面用whether连接同位语从句。选D。