问题
选择题
is surprising to us is that Tom can speak English fluently as though he were a native speaker.
A．What
B．That
C．Which
D．As
答案
答案：A
题目分析：考查名词性从句中的主语从句。 is surprising to us是主语从句，从句缺少主语用what；构成What... is that...句型。that在名词性从句中不作成分；which指哪一个；as引导非限制性定语从句，本句没逗号。故选A。