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 suffi cient 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 declining among 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 (answerE)
不懂啊作者: EGHJUYMN 时间: 2010-9-20 19:16
我是这么理解的
题目里的假设是人们花费更多的free time来玩电脑而非看电视；而提供的survey里提到的时间却是total time
的概念。
只有e选项里指出survey中所说的时间是否包括工作时间。如果包括工作时间那么这个survey没有意义，如果不是则假设是错的。作者: MarilynR 时间: 2010-9-21 06:39
那b的问题在哪里呢？Whether the amount of time spent watching television is declining among people who report that they
rarely or never use computers
如果那些几乎不用电脑的人看电视的时间也减少的话，那是不是可以推出看电视时间减少不是玩电脑时间增加（而可能是其他原因造成的）引起的呢？
我的思路哪里有问题啊？请nn和斑斑指教~~
拜谢~~！！作者: lenghongmin 时间: 2010-9-21 21:38
D的解释说what computer owners do is a separate question.我没看出来D选项说的是这个啊。请NN解释~作者: mereimoun 时间: 2010-9-24 08:17
B、C、D应该都是无关项，但A选项能否解释一下？
Whether a large majority of the survey respondents reported watching television regularly
我理解为：是否调查对象（ a large majority of the survey respondents ）平时都看电视。如果这些调查对象平时都不看电视或不怎么看电视，那么他们的说法（增加了电脑使用时间而且没有改变看电视的时间）就没有代表性，不能推翻原题中的结论；相反，如果这些调查对象平时都看电视，那么他们的说法可以推翻原题中的结论。
TO 刷牙不起沫 D是无关选项这个很明显。D在讨论是不是多数电脑拥有者会报告（do)……，因此解释中说他们做什么就是另一回事了
TO frankning007 (A的话，我觉得你的思维有一点误区，这里借用GWD讲逻辑时常说的，题里没告诉你的东西一概是你不知道的，所以逻辑必须是从题目出发。切忌自己按照生活经验来引申题意，此题与你引申出的调查对象的挑选是否合理是完全无关的。建议再多做做题寻找这种‘题目说啥我就知道啥，没说的我一概不知道的’感觉。
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