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GMAT逻辑的CR题型解析--结论题

2018-03-08 17:43 小马过河 admin

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摘要:又到了我们讲解CR体型的时刻啦!今天要给大家讲的是结论题,跟着小编的解题攻略走,攻破GMAT逻辑指日可待! 【结论题是什么】 结论题,又称conclusion题目或归纳题。通常需要从题目给出的信息中得出一个结论。 标志性词语:conclusion、conclude、infer、must be true 【解题思路】 顺向思维,通过总结归纳文中信息得出某个结论。通常与文章内容

 

 

  又到了我们讲解CR体型的时刻啦!今天要给大家讲的是“结论题”,跟着小编的解题攻略走,攻破GMAT逻辑指日可待!

  【结论题是什么】

  结论题,又称conclusion题目或归纳题。通常需要从题目给出的信息中得出一个结论。

  标志性词语:conclusion、conclude、infer、must be true

  【解题思路】

  顺向思维,通过总结归纳文中信息得出某个结论。通常与文章内容高度相关,不会出现新内容。

  【解题技巧】

  1.模糊词选项优先考虑

  2.条件句选项优先考虑

  3.排除法做题:

  (1)不能重复原文、不能反驳原文、不能只与原文中一部分相关;

  (2)不是对单个信息的改写或推理;是对原文2个以上信息的融合;

  (3)正确选项都能在原文找到依据

  (4)不必结合全部信息,但至少结合2个以上,必须结合文章最后一句文中已有结论,问题是让support,同加强题一样做法

  4.与段落重合度越高的选项越可能称为正确答案,若段落出现专有名词,答案一般也会出现专有名词

  5.出现if,unless,whenever等条件连词的选项成为正确答案的可能性远大于其他选项

  6.NOT,EXCEPT题E正确的可能性为85%,CD各为5%,AB加在一起5%。

 

  【错误选项特征】

  1.不能出现新概念(包含新的动词、形容词、名词等),原文的同义词除外

  2.原文没有绝对化语言,答案也不能有绝对化语言(原文若有some等,为严谨答案一般也有some)

  3.不能出现新比较

  4.切忌进行段落外信息的进一步推理!

  【例题】OG16-P502-1

  Neuroscientist: Memory evolved to help animals react appropriately to situations they encounter by drawing on the past experience of similar situations. But this does not require that animals perfectly recall every detail of all their experiences. Instead, to function well, memory should generalize from past experiences that are similar to the current one.

  The neuroscientist’ s statements, if true, most strongly support which of the following conclusions?

  (A) At least some animals perfectly recall every detail of at least some past experiences.

  (B) Perfectly recalling every detail of all their past experiences could help at least some animals react more appropriately than they otherwise would to new situations they encounter.

  (C) Generalizing from past experiences requires clear memories of most if not all the details of those experiences.

  (D) Recalling every detail of all past experiences would be incompatible with any ability to generalize from those experiences.

  (E) Animals can often react more appropriately than they otherwise would to situations they encounter if they draw on generalizations from past experiences of similar situations.

  解析:神经学家:记忆帮助动物在遇到相似经历下作出恰当的反应。但是动物并不需要回忆出他们的经历的每一个细节。也就是说,为了表现的更得体,记忆应该可以从和现在相似的过去经历中总结出经验。

  如果神经学家说的正确,可以得出什么结论?

  (A) 有动物可以回忆出一些过去经历当中的每一个细节,原文没有提及

  (B) 回忆出所有的细节可以帮助动物表现的更好,原文没有提及

  (C) 要从过去的经历里得出经验,即使不能回忆出所有的细节,也需要清晰的记得大部分细节,原文没有提及

  (D) 如果可以回忆出所有的细节,就不具备从过去经验里得出经验的能力,原文没有提及

  (E) 如果他们可以利用他们从过去相似经历里得出的经验,那么他们将会表现得更恰当,正确,符合题中逻辑链

  例题:OG16-P518-53

  Humans get Lyme disease from infected ticks. Ticks get infected by feeding on animals with Lyme disease, but the ease of transmission from host animal to tick varies. With most species of host animal, transmission of Lyme disease to ticks is extremely rare, but white-footed mice are an exception, readily passing Lyme disease to ticks. And white-footed mouse populations greatly expand, becoming the main food source for ticks, in areas where biodiversity is in decline.

  The information in the passage most strongly supports which of the following?

  (A) In areas where many humans are infected with Lyme disease, the proportion of ticks infected with Lyme disease is especially high.

  (B) Very few animals that live in areas where there are no white-footed mice are infected with Lyme disease.

  (C) Humans are less at risk of contracting Lyme disease in areas where biodiversity is high.

  (D) Ticks feed on white-footed mice only when other host species are not available to them.

  (E) The greater the biodiversity of an area, the more likely any given host animal in that area is to pass Lyme disease to ticks.

   解析:人类通过T感染L病。T通过吃有L病的动物感染L病,但是传染的难易程度是和宿主到T有关的。T很难从大部分种类的宿主身上感染L的,但是白脚老鼠是个例外,T很容易就感染上L。在生物多样性逐渐降低的地区,随着白脚老鼠数量的大量增加,白脚老鼠慢慢变成T的主要食物。

  上述信息主要支持下面哪一个信息?

  (A)在人类感染L的地区,感染L的T的比例特别高,原文没有提及

  (B )生活在没有感染L的白脚鼠地方的动物非常少,原文没有提及

  (C )在生物多样性高的地方,人类感染上L疾病的风险低,正确。因为生物多样性高,T的食物不止白脚老鼠一种,感染L的概率低,那么人从T上面感染L的概率也低。符合逻辑

  (D) T只有当吃不到其他的宿主时,才会吃白脚老鼠,原文没有提及。

  (E )一个地区的生物多样性越高,其他宿主把L传染给T的概率就越高,原文没有提及。

 



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