GWD 一道逻辑题，求解释！

zy05833

Although the discount stores in Goreville's central shopping district are expected to close within five years as a result of competition from a Spendless discount department store that just opened, those locations will not stay vacant for long. In the five years since the opening of colson's, a nondiscount department store, a new store has opened at the location of every store in the shopping district that closed because it could not compete with Colson's
Which of the following ,if true, most seriously weakens the argument?
A: Many customers of Colson's are expected to do less shoppingt here than they did before the Spendless store opened.
B: increasingly, the stores that have opened in the central shopping district since Colson's opened have been discount stores
C: At present, the central shopping district has as many stores operating in it as it ever had.
D Over the course of the next five years, itis expected that Goreville's population wil grow at a faster arate than it has for the past several decades.
E: Many stores in the central shopping district sell types of merchandise that are not available at either Spendless or Colson's

cyx3271

upup

nkzhengduo

选B吧
从题干看属于两种情况类比，因此要想削弱就要证明类比不成立

不打折的和不打折的商店竞争失败后，会有新的店铺取代

作者想用第二句的情况与第一句类比，从而得出：打折的和打折的商店竞争竞争失败后，也会有新店取代

削弱类比的关键就在于新店的情况：

1、如果新店是不打折的，不打折与不打折竞争，而后有更有竞争力的不打折店出现，按照作者的类比方式可以类比出：打折的和打折的竞争会产生更有竞争力的打折

2、如果新店是打折的，不打折与不打折竞争，而后产生打折；那按作者的类比方式，就得不到结论，打折和打折的竞争，会产生什么呢？所以B选项削弱。

PS：个人认为只能从类比上理解，以前做这道题的时候也试着从花费上去去理解，认为打折的比不打折的更有竞争力，所以打折和打折的竞争可能会产生打折更狠的，所以无法理解B。但是作者并没有说打折的就比不打折的好，属于自己过度推断。

wycg

我选B.
我是这样理解的.

题干加上选项B. 可以得出这样结论: 非折扣店C和折扣店S在地区里变成了老大. 其它的,无论折扣店还是非折扣店都没法混下去了. 所以, 在五年内店面空置率会很高. 削弱题干