蓝书上278页 削弱题16

chongov

16. Most consumers do not get much use out of the sports equipment they purchase. For example, seventeen percent of the adults in the United States own jogging shoes, but only forty-five percent of the owners jog more than once a year, and only seventeen percent jog more than once a week.
Which of the following, if true, casts most doubt on the claim that most consumers get little use out of the sports equipment they purchase?
正确答案：(C) Many consumers purchase jogging shoes for use in activities other than jogging.
我的选项：(D) Consumers who take up jogging often purchase an athletic shoe that can be used in other sports.
C和D的本质区别是？

chongov

理解了，谢谢

bzdrzao

can be 不一定发生