- Do you doubt she can run the race?- Yes, I doubt she can run against Liu Xiang A. that

- Do you doubt she can run the race?
- Yes, I doubt she can run against Liu Xiang
A. that; whether
B. whether; that
C. that; that
D. whether; if

(答案→)A. that; whetherB. whether; thatC. that; thatD. whether; if解析：考查名词性从句。第一空that引导宾语从句，表示一个确定的事实，作为doubt的宾语；第二空whether引导的宾语从句，表示不确定的事实。句意：—你怀疑她能跑完这个比赛吗？—是的我怀疑她是否可以赢刘翔。故A正确。

这个问题的回答的对