GWD 第13套的T-9-Q18. 一道逻辑题

rebeccajing

The growing popularity ofcomputer-based activities was widely expected to result in a decline intelevision viewing, since it had been assumed thatpeople lack sufficient free time to maintain current television-viewing levelswhile spending increasing amounts of free time on the computer. Thatassumption, however, is evidently false: in a recent mail survey concerningmedia use, a very large majority of respondents who report increasing timespent per week using computer report no change in time spent watchingtelevision.

Which of the following would be mostuseful to determine in order to evaluate theargument?

A.     Whether a large majority of the survey respondents reportedwatching television regularly

B.     Whether the amount of time spent watching television isdeclining among people who report that they rarely or never use computers

C.     Whether the type of television programs a person watchestends to changes as the amount of time spent per week using computer increases

D.     Whether a large majority of the computer owners in thesurvey reported spending increasing amounts of time per week using computers

E.     Whether the surveyrespondents’ reports of time spent using computers included time spent usingcomputers at work.

求怎么想的为什么选最后一个 前四个怎么错了

kevingod

题目一开始说把FREE TIME花在电脑上，看电视的时间就少了。后来举了一个反例，大多数被调查者反映花在电脑上的TIME增加了，但是看电视的时间没有相应减少。
这里，前一句说的是free time,后一句说的是time.
E选项：被调查者他们所指的time是否包含花在工作上的时间，即是否time等同于free time.
如果等同，反例成立，assumption错。
如果time=free time+time spent on at work ,这个例子就没有意义，不能说明assumption错。
对于其他四个选项，对whether分别回答yes or no,对evidenve的有效性均不产生影响。换言之，无关选项。

rebeccajing

,明白了 V5