Liu Xiang in the Olympic Games the 110 m hurdle world record.A. exchangedB. repeated

问题补充：

Liu Xiang,in the Olympic Games, the 110 m hurdle world record.

A. exchanged

B. repeated

C. combined

D. equaled

答案：

A. exchanged

B. repeated

C. combined

(答案→)D. equaled

解析：exchange交换；repeat重复；combine结合；equal平了。这里指的是平了110米栏的世界记录。