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  • [查看全文]GMAT逻辑思维训练题型汇总(4)
    7. A conservation group in the United States is trying to change the long-standing image of bats as frightening creatures. The group contends that bats are feared and persecuted solely because they are shy animals that are active only at night.  Which of the following, if true, would cast the most serious doubt on the accuracy of the group's contention?  A) Bats are steadily losing natural roosting places such as caves and hollow trees and are thus turning to more developed areas for roosting.  B) Bats are the chief consumers of nocturnal insects and thus can help make their hunting territory more pleasant for humans.  C) Bats are regarded as frightening creatures not only in the United States but also in Europe, Africa, and South America.  D) Raccoons and owls are shy and active only at night; yet they are not generally feared and pe...
  • [查看全文]GMAT逻辑思维训练题型汇总(5)
    9. Increase in the level of high-density lipoprotein (HDL) in the human bloodstream lower bloodstream-cholesterol levels by increasing the body’s capacity to rid itself of excess cholesterol. Levels of HDL in the bloodstream of some individuals are significantly increased by a program of regular exercise and weight reduction.  Which of the following can be correctly inferred from the statement above?  A) Individuals who are underweight do not run any risk of developing high levels of cholesterol in the bloodstream.  B) Individuals who do not exercise regularly have a high risk of developing high levels of cholesterol in the bloodstream late in life.  C) Exercise and weight reduction are the most effective methods of lowering bloodstream cholesterol levels in humans.  D) A program of regular exercise and weight reduction lowers cholesterol levels...
  • [查看全文]LSAT题型与GMAT逻辑的异同
    LSAT逻辑题型及典型问法:  △加强题  Which one of the following statements, if added as a premise to the argument, would make the conclusion valid / strengthen the argument?  Which one of the following, if true, would make the conclusion in the passage a logical conclusion?  Which one of the following is an additional piece of information that would support the conclusion?  △削弱题  Which one of the following statements, if true, most clearly undermines / seriously weaken the conclusion / argument?  Which one of the following assertions, if true, provides the most effective challenge to the author’s conclusion?  △假设题  Which one of the following is an assumption on which the author’s argument relies?  Which one of the following most accurately states a hidden assumption that the author must make in order to advance the argument abo...
  • [查看全文]LSAT题型与GMAT逻辑的异同(2)
    △结论(归纳)题  It can be concluded from the statements above that...  Which one of the following statements most accurately expresses the author's main point?  Which one of the following statements CANNOT be true?  Which one of the following inferences can be most reliably drawn from the passage above?  The passage as a whole is structured to lead to which one of the following conclusions?  Which one of the following is the best statement of the primary point of the passage?  Each of the following can be inferred from his argument EXCEPT...  Which one of the following claims is central to the author's argument?  If the statements above are true, then which one of the following must also be true?  △句子完成(划线填空)题  Which one of the following is the best completion of the argument above?  Based on the passage above, which ph...
  • [查看全文]三段论对求解GMAT逻辑题的价值
    三段论(Syllogism)是现代科学推理的核心基础, 可以追根于亚里士多德 (Aristotle)。 一个完美的推理, 用英文表示为 Sound, 如果仅仅从逻辑的角度分析, 一个符合逻辑的推理,用英文表示为valid。 英文单词syllogism就词的构成而言是syn- + logizersthai, 起源于古希腊语, syn-表示合成, 而后半部分来自于拉丁语logos 表示 思考, 思想, 推理等意思。 Syllogism 中的logos和单词LEGEND有着历史的渊源。 中古英语就有silogisme的词汇, 到了十四世纪演变为现代的syllogism的形式。 韦氏字典解释该词为: 正式论证中的演绎推理形式, 包含大小前提和结论。 ( a deductive scheme of a formal argument consisting of a major and a minor premise and a conclusion)。 在大英百科全书中, 对三段论的解释比较详细, 英文原文如下: In logic, a valid deductive argument having twopremisesand aconclusion.The traditional type is thecategorical syllogismin which both
  • [查看全文]GMAT逻辑题官方解题思路
    Verbal测试中的Critical Reasoning部分,一般译作原因评述题,或者逻辑推理题,我们有时俗称为GMAT逻辑题。顾名思义,它考察的就是逻辑判断、评价和推理的能力。具体来说,它是在考察应试者三个大方面的逻辑能力:1. argument construction(论点构造);2. argument evaluation (论点评价);3. formulating or evaluating a plan of action (阐明或者评价一个行动计划)。GMAT中的Critical Reasoning一般有14至15道题,题干由一段结论陈述句、一段提问和5项与之相关的原因和假设组成,要求考生在一定时间内从5项原因和假设中选择出最佳的一项。Critical Reasoning没有任何direction,所以看懂文章是很重要的关键因素。不过也可以通过加深对出现的各种题型的认识,和一些考试技巧的总结,来提高答题的正确率。GMAT逻辑的题型多样化特点很鲜明。很多专家把Critical Reasoning的题型分为四类、五类或者六类。我在这里就根据www.mba.com提供的官方说明,把它的题型归纳为三类:论点构造题、论点评价题和行动计划类题型。在具体分析之前,我先阐明一下应对GMAT Critical Reasoning题型的一些总体原则:1.相关性原则:正确的选项必然与原
  • [查看全文]GMAT逻辑题官方解题思路(2)
    (二)、论点评价题这一方面的问题主要让应试者在分析既定的论点基础之上去识别:factors that would strengthen, or weaken, the given argument(加强或削弱既定论点的因素),reasoning errors committed in making that argument(推理错误),以及the method by which the argument proceeds(论述方法)。也就是说,这类题型是在考察考生归纳推理的能力,要让考生根据题干中已有的推理找出支持、反驳观点以及假设条件。解读题干的时候,要快读,迅速获取读得懂的信息。同时由于题干一般较长,要注意后面的信息比较重要,不能遗漏。读题干的时候,还可以思考:推出结论还需要什么样的附加信息?判断这类题型5个选项的相关性时,可以使用如下判别方法:1.如果选项中没有比较,而其中设计的事件题干中有涉及,就有相关关系;2.如果选项中有比较,而比较的两个对象和比较点题干中都有涉及,就有相关关系;有一条没有,就是无关选项。3.有关项多于一项时,根据提示,取支持或反对结论的那一项。进一步分析,若多个选项取向相同,对于多个支持或多个反对结论的相关选项,要取更绝对化的那个;或者,把它们取非,带入题干结论,去
  • [查看全文]如何识破逻辑推理题中的无关选项
    首先,CR与SC的不同之处在于:SC是选最好的答案, 而CR是选择正确答案。虽然在题目中经常问most seriously weaken (support), 其实答案只有一个正确。绝对不会出现两个答案都削弱或都加强但一个作用弱一个作用强的情况。换个说法, 除答案外其它选项都错。在CR中, 无论怎么强调阅读都是不够的。我看到很多人的考试经验里都说逻辑很难, 题目很长, 问题是什么: 阅读理解。他们可能对逻辑推理, 逻辑关系以及各类题型都理解得很透彻了。但是当读不懂题或没有理顺文章逻辑关系时, 还是很难找到正确答案。举我自己的例子说明, 当我自己不是很在意地复习时, 我读题干就是用眼睛去看题目, 读完了, 只知道文章里的字我都认识, 原文什么意思以及逻辑关系根本不知道。 如果在实际考试中是这种情况, 既浪费时间, 又增加了心理负担。所以, 我对crack CR的第一条建议是active reading。每读完一部分, 应该知道其逻辑作用, 是premises还是conclusion;是作者的观点还是作者要反驳的观点等等。和做阅读是一样的, 边读边想。还有, 我认为CR阅读和RC阅读不一样的是, CR中的每句话和绝大部分的词汇对做题都很关键。在阅读是不能跳