LSAT难题探讨系列2: S8-IV-8

jq_jou

8. In Malsenia sales of classical records are soaring. The buyers responsible for this boom are quite new to classical music and were drawn to it either by classical scores from television commercials or by theme tunes introducing major sports events on television. Audiences at classical concerts, however, are continually shrinking in Malsenia. It can be concluded from this that the new Malsenian converts to classical music, having initially experienced this music as recorded music, are most comfortable with classical music as recorded music and really have no desire to hear live performances.

The argument assumes which one of the following?

(B) At least some of the new Malsenian buyers of classical records have available to them the opinion of attending classical concerts.

(C) The number of classical concerts performed in Malsenia has not decreased in response to smaller audience.

RIGHT CHOICE IS C), WHY B) IS WRONG? 如果将B)取非, 同样可以推翻了原文结论.
这类ASSUMPTION的题目究竟如何舍二取一呢? 肯请NN指点.

[此贴子已经被作者于2003-9-21 8:17:41编辑过]

dorbear

我查阅了一下LSAC的原题，正确的答案就是B（LSAT Preptest December 1992）。C完全就是无关选项，取非跟原论述没有关系。


个人理解万岁！

jq_jou

我的版本是1995年8月, 答案是C)
其实将C)取非: The number of classical concerts performed in Malsenia has decreased in response to smaller audience.  
那么同样能够推翻原来的ARGUMENT: 因为提供了另外一种原因来解释Audiences at classical concerts are continually shrinking in Malsenia.而不是他们 have no desire to hear live performances.
你觉得呢? 当然: B)取非同样达到推翻ARGUMENT的效果, 但是我的疑惑是哪一个效果更强???

dorbear

以原题为准，黄皮书和电子版都有很多错误没有更正。答案绝对是B

(C) 上面的理解有误；取反后并没有给观众减少提供另外一种解释，相反，in response to 表示由于观众的减少才导致演出数量的降低，因果关系倒置了。同意吗？

jq_jou

今天突然发现陈向东的版本把B)写成: (B) At least some of the new Malsenian buyers of classical records have available to them the COUPON of attending classical concerts. 这样一来选C)就是天经地义的了.
我觉得你的说法也有道理. 因为提到了continually shrinking, 所以无论以前CONCERT是不是少了, 但是现在AUDIENCE是越来越少. 如果这个选项变成The number of classical concerts performed in Malsenia has not decreased. 可能就是完美答案了.

[此贴子已经被作者于2003-9-23 14:07:34编辑过]

dorbear

不是，音乐会减少观众照样可以很多呀，如果观众真有兴趣的话，音乐会减少了观众应该爆满才对。

jq_jou

可是如果原来的CONCERT观看率是50%, 如果CONCERT数目减少了一半以上而且继续减少, 那么即使每场爆满, 观众总数目还是CONTINUALLY SHRINKING吧. 当然这有点违反常规, 但是也不是没有这种可能性.

dorbear

对；这里主要看音乐会减少的原因；如果是因为观众减少；不可能作为答案。如果是因为其它原因，如某种管制或干预，则必然是答案；其实这种情况就跟我们的正确答案取非后一致了，即限制了Avaiability.

freegirl

我觉得这道题目是两个不同的集合。The buyers responsible for this boom are quite new to classical music (A) and were drawn & Audiences at classical concerts(F). there's possible that the two sets has no subset.
Therefore, to reach the conclusion of the argument, we need prove that some people in the set A have the choices to go to live performance but they don't take.  Thus, Answer B is right. B like a bridge to connect A to the conclusion. Otherwise, we can say that it's F change the tastes to lead to the second fact rather than A does

即使取非C -- the number of concerts has decreased, the conclusion could be well established. So C is wrong.