※ 引述《cherrystyle (聘可)》之铭言： : OG13-107. : 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 shopping there : 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, it is expected that : Goreville’s population will grow at a faster rate 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. : 不太理解的地方是， : 1. : 官方解释说在colson开幕後 那些无法竞争的店家关闭 : 随後持续增加discount stores, : 而spendless 开了後就不会再有discount store的需求， : 请问要怎麽判断出不会再有其他需求呢？ 你指的应该是解释里的reasoning这一段吧： 「... that suggests that the stores were replaced because of a need that no longer exists after the opening of SpendLess.」 但注意哦，官方解释并没有像你讲的一样，是说「不会再有discount store的需求」 是说「过去导致重开的需求，在spendless出现後不复存在」 在B选项下，这个需求其实指的是「不同类商店的需求」。 Colson是nondiscount store（想成精品百货吧） B：当初Colson开了之後，回来的商店都是discount store（想成五金生活百货） 「有了精品百货後，後来开的是五金百货」 这个need指的是「人们需要不同种类的商店」而不是单指need of discount store。 （换个角度来想，如果今天题目写的是colson是五金百货， 而重开的都是精品百货，你还会说need 叫做discount store吗？ 但概念是一样的） 今天spendless本身就是五金百货，商店是同类的， 那自然不会再有「不同类商店需求」。 你可能会问，那没有discount 跟nondiscount之外的商店吗？ 抱歉，依照题目yes we have discount/ no we don't offer discount的二元分法下 没有第三种分类 : 2.选项B : 持续增加的discount store 表示可能不会再有店家被取代， : 与题目现况比较 : 这些discount stores会在五年内预期关闭因为无法与Spendless竞争， : 要怎麽weaken 倒闭之後的位置不太可能会有其他店家open呢？ 呃，这里你的表达有点误解 应该是去削弱「倒闭之後的位置会有其他店家open」 理由在上面已经叙明。 : 这里是否只要是能够weaken 类比例子不成立即可 : 我根本无需将答案套入Spendless? 虽然说实战做题之下，我们可以在读出类比例子之後快速去找点出两例差异点的选项 但是无论如何，检讨的时候还是要像现在这样，把每一步都想清楚噢。 至於类比题的正确答案出题模式，OG已经写得很清楚了： 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. : 还请好心人解惑....谢谢>< -- Dustin Deng (一战自修760，AWA 5.5) Dustin/A2GMAT 全科机经班： http://a2gmat.blogspot.tw/p/blog-page.html https://webptt.com/cn.aspx?n=bbs/GMAT/M.1433954252.A.2EC.html GMAT自修资源部落格： http://dustingmat.blogspot.tw A2GMAT线上解题、讨论Group： https://www.facebook.com/groups/A2GMAT/ --

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