GMAT申友逻辑CR题库-Which of the following most logically completes the argument? The growing popularity of computer-based activities was widely predicted to result-破解版08-真题答案解析

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CR67-77题

Which of the following most logically completes the argument?

The

growing popularity of computer-based activities was widely predicted to result in a corresponding decline in television viewing. Recent studies have found that, in the United States, people who own computers watch, on average, significantly less television than people who do not own computers. In itself, however, this finding does very little to show that computer use tends to reduce television viewing time, since __________.

A. many people who watch little or no television do not own a computer

B. even though most computer owners in the United States watch significantly less television than the national average, some computer owners watch far more television than the national average

C. computer owners in the United States predominantly belong to demographic groups that have long been known to spend less time watching television than the population as a whole does

D. many computer owners in the United States have enough leisure time that spending significant amounts of time on the computer still leaves ample time for watching television

E. many people use their computers primarily for tasks such as correspondence that can be done more rapidly on the computer, and doing so leaves more leisure time for watching television

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答案：

越来越流行

玩电脑预示着看电视的人少了。美国一个最近的研究发现，有电脑的人平均看电视的时间比那些没有电脑的人看电视的时间要少。但是，这个发现不能证明用电脑就减少了看电视的时间，因为_____ 选项分析题干中的一个推理过程是：因为有电脑的人看电视的时间少，就推出玩电脑让人看电视的时间变少了。注意，这中间是有一个变化过程的，即：看电视的时间因为玩电脑而变少。那么如果玩电脑的人本来就不爱看电视呢？根本就没有"变少"一说，因为本来就少，也就是说玩电脑和看电视没关系。不玩电脑也不会去看电视。 A：很多不看电视的人没有电脑。无关，排除。 B：虽然大多数有电脑的人比国家平均看电视的时间要少很多，一些有电脑的人看电视却远远超过平均水平。"一些"是很模糊的概念，对结论基本没有影响，类似"说了跟没说"一样的效果，排除。 C：玩电脑的人本来就是那种比平均水平看电视时间要少很多的一群人。没错，本来就看得少，何来"变少" 一说？ D：很多有电脑的人有足够的休闲时间，就算玩电脑也能有许多时间看电视。"很多"模糊概念，说明不了问题，排除！ E：很多用电脑的人是为了完成在电脑上能快速做完的任务，这样就能节约出更多时间看电视。"很多"，排除！