[请教]为什么这一题的A不对

hyljelly

The growing popularity of computer-based activities was widely expected to result in a decline in television
viewing, since it had been assumed that people lack sufficient free time to maintain current television-viewing
levels while spending increasing amounts of free time on the computer. That assumption, however, is evidently
false: In a recent mail survey concerning media use, a very large majority of respondents who report increasing
time spent per week using computers report no change in time spent watching television.
Which of the following would it be most useful to determine in order to evaluate the argument?
(A) Whether a large majority of the survey respondents reported watching television regularly
(B) Whether the amount of time spent watching television is decliningamong people who report that they
rarely or never use computers
(C) Whether the type of television programs a person watches tends to change as the amount of time spent
per week using computers increases
(D) Whether a large majority of the computer owners in the survey reported spending increasing amounts of
time per week using computers
(E) Whether the survey respondents' reports of time spent using computers included time spent using
computers at work

标准答案是E。

我能够理解答案E是对的，但是我不理解为什么A不对。
我分析A的过程：如果调查的那些人都很少看电视，那么结论中的no change in time spent watching TV就没有意义了，所以A可以weaken the argument.

希望大家帮我分析我的思路哪里不对了。
谢谢。

真武剑

我昨天刚做了这道题，我一开始选A，继续往下看 看到 E 的时候就改成 E 了。
因为题目问的是most useful。
楼主难道不觉得 E 比 A 更加useful吗？

E 正好击中了题目中的一个弱点：
前面说：people lack sufficient free time to...
后面说：report increasing time spent per week using computers...
偷换概念是题目的软肋，击中软肋的，自然most useful。

反过来看A，不是regulary，会让no change失去意义。但算不上完美驳倒吧？ 还是 E 更most useful一些。

love凤巢

这种问题怎样才能在第一遍读题的时候就发现呢？

meixiermxe

题目中说“ since it had been assumed that people lack sufficient free time to maintain current television-viewing
levels while spending increasing amounts of free time on the computer”
因此， 即使调查的那些人很少看或者不看电视， 也算是maintain current tv-viewing level. 因此这个evaluation对结论没有影响

nyndw

我觉得题目都在讨论的重点是time on PC/TV的变化，一个时间的增加会不会影响到另一个的时间（不管是free time还是time，都是在讲时间的变化问题）
而A是讲被调查的个人的习惯问题，是做一件事情的频率regularly，而不是做这件事情的时间多少的变化。
比如，一个人regularly的7天看一次电视，而这个人的free time每周总共有5个小时，如果他把这4小时用于玩电脑，那就每周看电视一次，用时1小时；如果3小时电脑，那就每周看电视一次，用时2小时。
他不regularly的看也是这些时间，这样分配，只是比如第一天看电视半小时第二天看电视1小时这样。
所以regularly与否对结论【用电脑时间影响看电视时间】没有影响的。
（不知道这样思路对不对，一起探讨）