问题补充：
Liu Xiang is Yao Ming.
A. as a famous athlete as
B. as famous an athlete as
C. so a famous athlete as
D. as famous an athlete so
答案：
A. as a famous athlete as
(答案→)B. as famous an athlete as
C. so a famous athlete as
D. as famous an athlete so
解析：本题的含义是刘翔和姚明同样的出名，as……as表示……与……同样的，形容词位于第一个as之后，然后加相关的名词，故本题选B。
