GWD4逻辑题求教

gmatziyu · 发表于 2010-2-19 13:06:32

Q7:
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?

Many customers of Colson’s are expected to do less shopping there than they did before the SpendLess store opened.
Increasingly, the stores that have opened in the central shopping district since Colson’s opened have been discount stores.
At present, the central shopping district has as many stores operating in it as it ever had.
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.
Many stores in the central shopping district sell types of merchandise that are not available at either SpendLess or Colson’s.

Answer: Ｂ
请问这题思路是怎样的呢？谢谢－

salasbond · 发表于 2010-2-19 13:14:33

一下是OG12的解释
Argument Evaluation
Situation Due to competition from a recently opened SpendLess discount department store, discount
stores in Goreville’s central shopping district are expected to close within fi ve years. But
those locations will not be vacant long, for new stores have replaced all those that closed
because of the opening fi ve years ago of a Colson’s nondiscount department store.
Reasoning Th e question is which option would most weaken the argument? Th e arguer infers that stores
that leave because of the SpendLess will be replaced in their locations by other stores
because that is what happened after the Colson’s department came in. Since the
reasoning relies on a presumed similarity between the two cases, any information that
brings to light a relevant dissimilarity would weaken the argument. If the stores that
were driven out by Colson’s were replaced mostly by discount stores, that suggests
that the stores were replaced because of a need that no longer exists after the opening
of SpendLess.
A Th e fact that Colson’s may be seeing fewer customers does not mean that the discount stores that
close will not be replaced; they might be replaced by stores that in no way compete with Colson’s
or SpendLess.
B Correct. Th is option most seriously weakens the argument.
C If anything, this strengthens the argument by indicating that Goreville’s central shopping district
is thriving.
D Th is, too, strengthens the argument because one is more likely to open a new store in an area
with a growing population.
E Because this statement does not indicate whether any of these stores that off er goods not sold at
SpendLess or Colson’s will be among those that are closing, it is not possible to determine what
eff ect it has on the strength of the argument.
Th e correct answer is B.

gmatziyu · 发表于 2010-2-19 14:27:55

GWD4逻辑题求教

谢谢salasbond!

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