OG-52

52. 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?
(C) Many consumers purchase jogging shoes for use in activities other than jogging.
(D) Consumers who take up jogging often purchase an athletic shoe that can be used in other sports.
(E) Joggers who jog more than once a week are often active participants in other sports as well.

用排除法后剩下这三项，正确答案是C,但这三项表达的意思似乎并无区别，OG上的解释如下：Because the consumers and joggers mentioned in D and E respectively are most likely to be among those who frequently use sports equipment and whose existence the argument concedes, D and E are inappropriate.越看越糊涂了，sigh~

题目要求削弱most consumers get little use out of the sports equipment they purchase，不就是要证明这些人经常使用运动器械么？

混乱～

D，E的consumers and joggers除了参加jogging外，还买别的鞋子，参加别的运动－－这不是削弱结论，而是跟结论一致：Most consumers do not get much use out of the sports equipment（jogging shoes） they purchase.