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GMAT逻辑推理解题至宝

时间:2016-02-18 13:58来源:朗阁小编作者:don

GMAT没有GRE中的类比反义和填空,免去了背大量生僻单词的负担,但增加了GMAT逻辑(critical reasoning)和语法改错(sentence correction)

  其实过去的GRE也是有单项的逻辑题,但后来去除了,然后做为一种题型出现在了阅读之中。

  GMAT逻辑推理题是很有意思的,每做一道题,就像玩一个game。我将之誉为“大脑的体操,思维的游戏,精神的调节,智商的飘逸。”

   但真正面对考试,就不那么轻松,因为有时间所限。尤其是难题,甚至GMAT逻辑题读不懂,运用严格的逻辑思维来做,往往耗时甚多。尤其是五个选项逐一论 证是不切实际。所以对于逻辑题,我们必须要培养一种感觉,依靠这种感觉我们可以很快地将一些无关项排除掉。那这种感觉除了靠大量练习来培养外,应通过 察觉选项中的“无关信息”,迅速做出判断,将之排除。

  这就是所谓“无关信息排除法”--- 通过选项中出现了与原文内容和推理无关的内容将之迅速排除。常常能排除五项中的三个,再对剩下的选项认真考虑,做出 后抉择。

  具体实践两道题

  Teenagers are often priced out of the labor market by the government-mandated minimum-wage level because employers cannot afford to pay that much for extra help. Therefore, if Congress institutes a subminimum wage, a new lower legal wage for teenagers, the teenage unemployment rate, which has been rising since 1960, will no longer increase.

  Which of the following statements, if true, would most weaken the argument above?

  (A) Since 1960 the teenage unemployment rate has risen when the minimum wage has risen.

  (B) Since 1960 the teenage unemployment rate has risen even when the minimum wage remained constant.

  (C) Employers often hire extra help during holiday and warm weather seasons.

  (D) The teenage unemployment rate rose more quickly in the 1970’s than it did in the 1960’s.

  (E) The teenage unemployment rate has occasionally declined in the years since 1960.

  先看完问题,发现是削弱题;再读原文,意思不难,很快提炼出其逻辑为

  如果国会制定低的teenagers 低工资 ===》teenagers的失业率将不再上升

  显然,正确选项首先要涉及 低工资和失业率之间的关系,而其他内容则为无关信息,可以排除

  显然A 和B都是相关的

  而C在谈季节问题,D和E没有涉及失业率快慢的原因,都与原文逻辑无关,通通排除。

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