Liu Xiang was the winner in the _________ hurdle in the 2004 Olympic Games. A.110 meters B110-meter

问题描述:

Liu Xiang was the winner in the _________ hurdle in the 2004 Olympic Games. A.110 meters B110-meter
正确答案是BA 也没错吧?

A应该是110 meters' hurdle才对
跟x-year-old=x years' old一样的