Liu Xiang is first Chinese who has won one-hundred-metre hurdle gold medal in the Olympic

问题补充：

Liu Xiang is first Chinese who has won one-hundred-metre hurdle gold medal in the Olympic Games.

A. the;a

B. the;the

C. the;an

D. a;the

答案：

A. the;a

B. the;the

(答案→)C. the;an

D. a;the

解析：考查冠词。the first 第一，a gold medal 不限定。