One concern people have now is printing passengers’ names and ID numbers on tickets will make it harder to protect their private information.
A. whether
B. when
C. how
D. that
网友回答
(答案→)A. whether
B. when
C. how
D. that
解析:本题中的whether引导的是一个表语从句,whether在句中不充当任何成分,只是一个引导词而已。句义:现在人们的担忧是票上的名字是否会让保护私人隐私变得更难。根据句义可知BCD语义不符。故A正确。