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GMAT逻辑推理模式之果因推理

信息来源:网络  发布时间:2016-05-09

  下面小编通过两道例题为大家简单地分析一下果因推理模式下的CQ模型是怎样的。希望这种推理模式能够帮助大家形成定势思维,快速找到符合推理的答案。

  一、GMAT逻辑果因推理简介

  1、GMAT逻辑果因推理的定义。

  GMAT逻辑提干原文叙述的模式会有两种:一是先叙述前提原因,后叙述即将发生可能发生但不一定能发生的结果。二是先叙述已经发生的结果,后叙述导致该结果的原因。果因推理就属于后者。逻辑上,可以定义为已知现象,回溯原因的推理,就像侦查探案一样,此类都是果因推理。

  2、GMAT逻辑果因推理的特征。

  1)题型特点:侦探查案,都是果因模式推理。逻辑上,可以定义为已知现象,回溯原因的推理。几乎所有的现象解释题都是果因推理。(结论是解释。)前提是逻辑上的结果,结论是逻辑上的原因。所以叫果因。

  2)抽象形式:Premise:有一个现象/结果。Conclusion: 解释这个现象或者结果。

  (详情请看 GMAT逻辑果因推理解题法 )

  二、GMAT逻辑果因推理的解题方法

  1、GMAT逻辑果因推理的评估方向。

  CQ1:有无他因。削弱就说结论有问题,找他因来解释前提中的现象或结果;加强就是排除或者否定他因的存在。

  CQ2:因果联系问题。削弱就说因果之间可能没有联系;加强就说因果之间确实有联系。

  2、解题方法:这种题要抓住的不是结论,而恰恰是前提。因为前提是“果”。找出现“果”的选项,出现果的一定要解释“果”为什么发生,而不是在说“果”的原理,不是在说“果”是什么。

  (详情请看 GMAT逻辑七大推理模式详解 )

  三、GMAT逻辑果因推理举例分析

  例一:

  The growing popularity of computer-based activities was widely expected to result in a decline in television viewing, since it had been assumed that people lack sufficient free time to maintain current television-viewing levels while spending increasing amounts of free time on the computer. That assumption, however, is evidently false: In a recent mail survey concerning media use, a very large majority of respondents who report increasing time spent per week using computers report no change in time spent watching television.

  Which of the following would it be most useful to determine in order to evaluate the argument?

  (A) Whether a large majority of the survey respondents reported watching television regularly

  (B) Whether the amount of time spent watching television is declining among people who report that they rarely or never use computers

  (C) Whether the type of television programs a person watches tends to change as the amount of time spent per week using computers increases

  (D) Whether a large majority of the computer owners in the survey reported spending increasing amounts of time per week using computers

  (E) Whether the survey respondents’ reports of time spent using computers included time spent using computers at work

  果因推理分析:

  果因推理。结论“用电脑时间增加不会减少看电视的时间”。抓果。看哪个能解释果或者提到果因关系。

  A 被调查者是不是经常看电视都可以跟自己以前比较是不是减少了看电视的时间,不影响结论。

  B 很少用电脑的人也是会用电脑,即用电脑的时间增加,满足题目要求,不嫩削弱。

  C 电视节目,无关。

  D 不管是不是,都是电脑时间增加了,不能削弱。

  E 正确。若是工作时间用电脑增加,则不是free time,削弱了因果关联,CQ2。

  例二:

  Guidebook writer: I have visited hotels throughout the country and have noticed that in those built before 1930 the quality of the original carpentry work is generally superior to that in hotels built afterward. Clearly carpenters working on hotels before 1930 typically worked with more skill, care, and effort than carpenters who have worked on hotels built subsequently.

  Which of the following, if true, most seriously weakens the guidebook writer’s argument?

  (A) The quality of original carpentry in hotels is generally far superior to the quality of original carpentry in other structures, such as houses and stores.

  (B) Hotels built since 1930 can generally accommodate more guests than those built before 1930.

  (C) The materials available to carpenters working before 1930 were not significantly different in quality from the materials available to carpenters working after 1930.

  (D) The better the quality of original carpentry in a building, the less likely that building is to fall into disuse and be demolished.

  (E) The average length of apprenticeship for carpenters has declined significantly since 1930.

  果因推理分析:

  果因。因为1930年前的工匠好,所以1930年前的carpentry才能更好。

  A 本题比较的是hotel纵向比较。

  B 这说明1930年前的确实好,而且没解释。

  C 没有显著材料的不同说明不是材料问题排除他因是support。

  D 正确。这句话需要推理理解,建筑的工艺越好,越不可能倒塌或废弃,说明1930年前留下来的都是当时做的最好的那些。而拿当时最好的和现在一般的比较就不具有代表性。CQ1找到他因。

  E 学徒期减少,说明手艺不那么精湛了,support。

  (详情请看 GMAT逻辑练习题)

  GMAT逻辑果因推理的出题方式和解题思路百利天下小编通过几个简单的例题帮助大家简单分析了一下,这种逻辑推理模式思路较为简单,大家只要记住两种CQ的方向一定能够快速找到答案。

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