–Yao Ming isn’t overnight success.I agree with you.A. anB. aC. theD. /

问题补充：

–Yao Ming isn’t overnight success.

--I agree with you.

A. an

B. a

C. the

D. /

答案：

(答案→)A. an

B. a

C. the

D. /

解析：考查冠词。Success指具体成功的人或事，用a修饰；且overnight用元音开头，要用an修饰。所以选A。