单选题 What problems does sport have?

A、 Some women athletes are actually men.
B、 Women or men do not run or swim in the same races.
C、 It is difficult to check whether women athletes are really women.
D、 Some women Athlete are given hormone injections.

【正确答案】 D

【答案解析】根据最后一段倒数第五句Conditions are very different now，and sport is much more serious． It is also sp serious that some women athletes are given hormone injections．可以推断出D)项为正确答案。