Prep2-15

dorislee1991

3.prep2-15

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.  
答案是B,但是如果老板认为的话不就是support argument了吗。
为什么D不正确？

顺天府府尹

题目说：如果A公司采用低价法成功了，那么如果后来A公司提价，很有可能B公司也采取相同的方法降价，把A公司逐出市场。

削弱：如果B公司的领导认为以前采取过低价法的A公司以后再面对自己的竞争时仍有可能再采取低价法，那么B公司降价就没有用了。

我的理解。

slamshady

D讨论的是停止某一航线的服务，应该算竞争不过别人时要做的后事吧，即该选项已经默认上面的结论是正确的了

虽然相对而言B是最正确的，但我个人觉得believe好像显得有点主观，当初做的时候一上来就把B排除了

gracezz

我也一上来就把B排除了。。。。。。

ziluqingqing

貌似这道题的B答案把A,B公司的老板搞错了...
都以为是先前降价的那个公司的老板

sallyruru

我也是一上来就把B给kill了……悲剧……