各位大牛们，求教两道PREP里的逻辑题~拜谢大家了！

1155665

1、Some airlines allegedly reduce fares on certain routes to a level at which they lose money, in order to drive competitors off those routes.  However, this method of eliminating competition cannot be profitable in the long run.  Once an airline successfully implements this method, any attempt to recoup the earlier losses by charging high fares on that route for an extended period would only provide competitors with a better opportunity to undercut the airline's fares.

Which of the following, if true, most seriously weakens  the argument?

(A) In some countries it is not illegal for a company to drive away competitors by selling a product below cost.
(B) Airline executives generally believe that a company that once underpriced its fares to drive away competitors is very likely to do so again if new competitors emerge.
(C) As part of promotions designed to attract new customers, airlines sometimes reduce their ticket prices to below an economically sustainable level.
(D) On deciding to stop serving particular routes, most airlines shift resources to other routes rather than reduce the size of their operations.
(E) When airlines dramatically reduce their fares on a particular route, the total number of air passengers on that route increases greatly.

正确答案：B
我的想法：做weaken题应该是选项削弱原文结论吧？我觉得原文结论是this method of eliminating competitors can not be profitable in the long run那句吧。。。那B选项怎么就跟影响长远有益联系起来了呢？？？




2、Denoma, a major consumer-electronics maker, had a sizable decline in sales revenue for its most recent fiscal year.  This result appears surprising, because electronics retailers report that although their overall sales were considerably lower than in the previous year, their sales revenue from Denoma models actually grew, largely thanks to some innovative and popular models that Denoma introduced.
Which of the following, if true, does most to explain the apparently surprising result?
A. Because of the need to educate the public about its new models’ capabilities, Denoma’s advertising spending was higher than normal over the period.
B. For the period at issue, Denoma’s major competitors reported declines in revenue that were, in percentage terms, greater than Denoma’s.
C. A significant proportion of Denoma’s revenue comes from making components for other consumer-electronics manufacturers.
D. Unlike some of its major competitors, Denoma has no lines of business outside consumer electronics to provide revenue when retail sales of consumer electronics are weak.
E. During the period, consumer-electronics retailers sold remaining units of Denoma’s superseded models at prices that were deeply discounted from those models’ original prices.

正确答案：C
我的想法：原文中说Denoma公司总销售额减少，但是其零售商却说Denoma产品销售额增加，问哪个可以解释下这种差异。C项说Denoma大部分收入来自于给其他厂商造零件的业务，可是这，这怎么说明这种差异了啊？我觉得不着边际啊。。。。。


跪谢各位大牛指点一下了！
祝要考的大牛们700+，考完的大牛们申到50+！

lisaorange

(1)首先第一题哈, 就这道题来说削弱的是其方法不成立. 削弱题有很多种削弱的方式, 建议在没看选项之前不要预测是哪个方面的削弱,直接对比选项,和题目相关的先留下,不相关的排除.如果剩下2个或3个,进行比较,最能让你对题目相信度降低的,就是正确答案了. 这道题首先就能排除ACE, 这3个选项无关,在BC中比.

(2)第二题问解释, 你读的题目意思完全正确. 选项一扫发现ABDE都解释不了, 只有选C了, 这是比较大胆的做法.
C是说D公司的大部分收入是来自为其他电器生产商供货,而不是来自零售商.就是说即使零售商对于D公司产品的销售额增长很大, 这只占D公司收入来源的一小部分, 完全可能D的其他主要来源导致其总收入下降. 但这么做题考场上花时间有点多.

1155665

第二个我明白了，被你这样一解释我觉得好简单。。。自己怎么那么弱智居然没想到！谢谢啦~~~
不过第一个，你的意思是说这个weaken的是途径方法吗？就是说weaken了原文中“通过降价吸引乘客赶走竞争者”的方法？我看这道题的时候也觉得B\C中选择，但是总觉得B和原文好像是脱节的，完全理不顺原文和选项之间的逻辑链条啊。。。求指点啊求指点