TTGWD4-Q7

legendends

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?

 

 

1. Many customers of Colson’s are expected to do less shopping there than they did before the SpendLess store opened.
2. Increasingly, the stores that have opened in the central shopping district since Colson’s opened have been discount stores.
3. At present, the central shopping district has as many stores operating in it as it ever had.
4. Over the course of the next five years, it is expected that Goreville’s population will grow at a faster rate than it has for the past several decades.
5. Many stores in the central shopping district sell types of merchandise that are not available at either SpendLess or Colson’s.

answer is B ，看的很迷惑，可否说一下这题的逻辑关系？谢谢！

luolihua73

new non-discount store opens 迫使其他的non-discount store关掉，但又有新的store开。所以预测就算discount stores 因为新的discount store开而关掉，那些地点也不会空太久。

要注意题目中一个是discount store, 一个是non-discount store，如果non-discount store的例子不可以用在discount store上的话，就weaken了结论。

B non-discount store 开了后，在它周围新开的很多是discount stores，这是一个互补的关系，而不是互相竞争。所以这个例子不能用在题目中的discount store。

legendends

明白了,就是打折店关门了，非打折店也不会在这基础上开，它只会在关门的非打折店基础上开，对否？

wall_streets

QUOTE:

new non-discount store opens 迫使其他的non-discount store关掉，但又有新的store开。所以预测就算discount stores 因为新的discount store开而关掉，那些地点也不会空太久。

要注意题目中一个是discount store, 一个是non-discount store，如果non-discount store的例子不可以用在discount store上的话，就weaken了结论。

B non-discount store 开了后，在它周围新开的很多是discount stores，这是一个互补的关系，而不是互相竞争。所以这个例子不能用在题目中的discount store。

这怎么会是个互补的关系呢? 如果non-discount store和discount store都卖同样的商品,那么顾客一定是去买打折的东西,谁会掏冤枉钱啊?这样还不算是个竞争关系?

我认为B的削弱是这么实现的: none-discount store的周围开了很多discount store,说明discount store的开店动机是提供更便宜的价格.

                                              如果要把该例应用到"discount store倒闭后新的discount store会开张"这个说法上,那么"新的discount store"的开店动机也应该是"提供更便宜的价格". 也就是说,"新的discount store"应该提供折上折. 但这是不可能的,因为原题中的那个SpendLess折扣店(可能)是指那种"提供全市最低价的商店",类似于"国美电器"------比价格,谁能比我低?