|
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?
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? (A) Joggers are most susceptible to sports injuries during the first six months in which they jog. (B) Joggers often exaggerate the frequency with which they jog in surveys designed to elicit such information. (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.
C
(E) Joggers who jog more than once a week are often active participants in other sports as well.
答案是C, 没有问题, 但是D说,慢跑的人通常喜欢买A鞋, 这不就是说明了, 买了慢跑鞋的人的数据与实际上慢跑的人的数据的相互关系是不准确, 实际上A鞋相当于一个他因. 这不也就反对了慢跑慢跑鞋这个例子的数据的可靠性么,不也就weaken了结论么? 请nn指教,不知道问题的症结再哪里?  | 
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2007-7-4 19:32:00
