【题目】________ bothers me is that the young man seems to know a bit too much.
A.Whether
B.What
C.Which
D.That

【答案】B
【解析】考查主语从句。句意：困扰我的是，年轻人似乎知道得有点太多了。此处主语从句缺少引导词，缺少主语，根据句意选B。