GMAT的逻辑推理部分(CriticalReasoning)对于很多学生来说是难点。然而，这一部分和数学，阅读一样，是可以争取拿到满分的(在GMAT中唯一不太可能拿到满分的只有SentenceCorrection，毕竟我们不是语言学家，不可能知晓所有的idioms，但90%以上正确率是做得到的)。接下来，我们就通过几个实际的例子，来谈谈如何在GMATCritical Reasoning中拿到满分。(本文的思路也适用于LSAT的考生)
Example1 (Difficulty Level: 700).
Whenever a major airplane accident occurs, there is a dramatic increase in thenumber of airplane mishaps reported in the media, a phenomenon that may lastfor as long as a few months after the accident. Airline officials assert thatthe publicity given the gruesomeness of major airplane accidents focuses mediaattention on the airline industry, and the increase in the number of reportedaccidents is caused by an increase in the number of news sources coveringairline accidents, not by an increase in the number of accidents.
Which of the following, if true, wouldseriously weaken the assertions of the airline officials?
A. The publicity surrounding airlineaccidents is largely limited to the country in which the crash occurred.
B. Airline accidents tend to occur far moreoften during certain peak travel months.
C. News organizations do not have anyguidelines to help them decide how severe an accident must be for it to receivecoverage.
D. Airplane accidents receive coverage bynews sources only when the news sources find it advantageous to do so.
E. Studies by government regulations showthat the number of airplane flight miles remains relatively constant from monthto month.
所有的CR题目由三个部分组成：
1.Question“Which of the following, if true, wouldseriously weaken the assertions of the airline officials? ”
2.Argument: “Whenever a … accident”(问题前面的整段话)
3. Choices
我们解题，第一步看Question。这题，问的是weaken. 90%的GMAT题目都是在问如何weaken(削弱), support(支持), evaluate(评估) the argument 或者是这个argument的assumption (假设)是什么
一旦题目问的是weaken, support, evaluation orassumption，我们接下来第二步就是需要阅读argument并且找出其line of reasonings (也叫作logical tree)
任何推理(reasoning)都是由前提(premises/evidence)和结论(conclusion)两个部分构成，一般我们用横线隔开，例如大家非常熟悉的假言推理(常用于数学证明)：
Ifp, then q (前提1)
P (前提2)
__________________
q(结论)
要在GMAT Critical Reasoning拿到满分，同学们应该对形式逻辑中常见的推理形式(例如简单归纳法，由因到果的推理，由果到因的推理(溯因推理，假说演绎推理，求异法，求同法)，类比推理等)十分熟悉。一个argument往往由1个甚至数个reasoning构成，同学们在快速阅读理解后，应该在头脑中(也可借助草稿纸简单标注)形成作者的推理形式并分析出他用了哪一(几)种推理形式。例如本题就用到了溯因推理(Abduction)。
溯因推理是常见的由果(通常是有一个事实和现象，例如苹果从树上掉下来)找因的推理。其形式如下：
q
ifp, then q
以上就是关于“GMAT逻辑推理怎么拿满分”的内容，希望通过本篇文章的学习，对大家的考试有更好的帮助，也希望大家能够在考试中取得优异的成绩，早日实现留学梦想!更多精彩内容，敬请关注本频道的更新!