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求助prep一道题

73.   
Advertisement:  Ten years ago, the Cormond Hotel's lobby was carpeted with Duratex carpet while the lobby of a nearby hotel was being carpeted with our competitor's most durable carpet.  Today, after a decade in which the two hotels have had similar amounts of foot traffic through their lobbies, that other hotel is having to replace the worn-out carpeting near its lobby entrances, whereas the Cormond's Duratex carpeting has years of wear left in it.

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

A. The lobby of the Cormond Hotel has five different entrances, but the lobby of the other hotel has only two.
B. The carpet of the Cormond Hotel's lobby is not the most durable carpet that Duratex manufactures.
C. The other hotel has a popular restaurant that can be reached from outside without walking through the hotel lobby.
D. The carpet that is being used to replace carpeting near the other hotel's lobby entrances is not Duratex carpet.
E. There is a third hotel near the other two that has not replaced the Duratex carpet in its lobby for more than 15 years.
答案是A,我选的E,因为我觉得A不能从任何方面产生削弱,压根就和有几个出口没关系,反而E做出了比较,但是E的比较对象不大对,但是也没办法呀。A与题目貌似一点联系都没有,哪位帮忙解决一下~~
在此跪谢~
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Simply math.

For each entrance, the number of people coming in is total/# of entrance.

If the total is the same, the hotel with the more entrance would end up with fewer people step on the carpet at each entrance. Pure wear and tear on the carpet would be less for the hotel with more entrances.

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哦~~原来是这个意思呀~~~真晕~~为什么自己想不到呢??怎样才能提高下自己的这方面能力~~

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看到左后whereas前面有个entrances,找entrances对比选项。排除BCE。A有对比,果断选A。按照题目意思做死定了!

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原文就说了两个宾馆,E选项扯出第三个宾馆明显是无关选项。A选项的意思是这样的,虽然踩过地毯的人差不多多,但是越多的入口就意味着平均面积上越少的踩踏。

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