虚心请教PREP08的73题，Helr的方法我用的有点儿混乱了。先谢谢大家。

cdbgin009

Advertisement: Ten years ago, the Cormond Hotel's lobby was carpeted with Duratexcarpet while the lobby of a nearby hotel was being carpeted with ourcompetitor's most durable carpet.  Today,after a decade in which the two hotels have had similar amounts of foot trafficthrough their lobbies, that other hotel is having to replace the worn-outcarpeting near its lobby entrances, whereas the Cormond's Duratex carpeting hasyears of wear left in it.

Which of the following, if true, most seriouslyweakens the force of the advertisement's evidence for concluding that Duratexcarpet is more durable than the carpet of its competitor?

A. The lobby of the Cormond Hotel has fivedifferent entrances, but the lobby of the other hotel has only two.

B. The carpet of the Cormond Hotel's lobby is notthe most durable carpet that Duratex manufactures.

C. The other hotel has a popular restaurant thatcan be reached from outside without walking through the hotel lobby.

D. The carpet that is being used to replacecarpeting near the other hotel's lobby entrances is not Duratex carpet.

E. There is a third hotel near the other two thathas not replaced the Duratex carpet in its lobby for more than 15 years.

我是这么做的，不知道对不对。

1. 结论在问题里，说D的地毯好。就是说C宾馆的地毯没有坏。

2. 这是helr老师提过的“类比”的推理模式，那么：

C宾馆和other宾馆，相似的地点，经历了相同的时间，相同了客流；other宾馆的地毯坏了-->C宾馆的地毯也应该坏了

3.问题是削弱“C宾馆的地毯没有坏”这个结论。

那不就是应该加强“C宾馆的地毯坏了”这个结论吗？可是看helr老师的笔记，说削弱这个类比推理，不就是相当于削弱了C宾馆的地毯也应该坏了吗？

这是不是矛盾了？还是我理解的哪里有问题？

希望大家指点一下！

谢谢了先！

448258130

选a，别人整理的helr我看过两遍，但是应该是悟性不够，没办法完全领会他的精髓，楼主可以尝试自己总结
这题是用对比的方法推出结论，要weaken的话直接说不具有可比性就好了

cdbgin009

顶上去，希望有人能解答一下

cdbgin009

顶上去，希望有人能解答一下