GMAT测验逻辑题的罕见毛病

　　做GMAT测验逻辑题，偶然候会很轻易堕入本身的思惟误区里。以下百分网小编清算的GMAT逻辑测验的罕见毛病，希接待浏览!

　　GMAT逻辑毛病之一：相反圈套。

　　这类圈套是ETS习用的手法，出题者只需花一点点的时辰就能够进步测验的“品质”。比方：

　　1) "All of the following may be inferred from the passage EXCEPT," 而后给你4个选项和一个相对能从上文推出的选项。有些考生很天然就挑选这个相对准确谜底，而忘了”EXCEPT”这个词(若是这个选项是A，信任会有更多 的考生受骗)。

　　2) GMAT逻辑试题中题目问及推理中的一个假定，却给出一个归纳综合题干的选项。

　　3) "Which of the following weakens the argument above," 而后却给出一个相对能撑持(strengthen)的选项

　　这些圈套利诱的是那些测验大意的考生。若是你能用这个战术，坚持苏醒的脑筋，细心当真地浏览选项绕过这些圈套的话，却能够成为你测验的上风。记着，一旦发明这些圈套，判断地解除它，即便你找不到对劲的选项，也能进步准确的几率。

　　GMAT逻辑毛病之二： 规模圈套

　　当你必须界定文章的规模时，你就有须要先晓得一下咱们所指的“规模”。实在，你在总结文章主题的同时也在界定规模。一旦你晓得了文章的主题，你也已界定了文章的主题。比方说，这篇文章究竟是在谈graduate school admissions, MBA admissions, 仍是谈若何helping international students get into the business school program of their choice? 每步都是在界定规模

　　典范的“渣滓”选项不是规模太宽，太窄便是与文章毫无相干，或爽性就与准确选项意义完整相反。做题时，你能够寻觅那些极度的选项，而后解除它。极度的选项常常包罗如许的词：all, always, never, none. 而折中一点的选项常常是“准准确”选项，包罗如usually, sometimes, probably等如许的词。

　　这个推论和原文符合，由于它在原文的规模以内。

　　普通说来always, never, none等这些词语气太强。在GMAT逻辑测验中，普通不会呈现这些极度的说话，也便是说，若是某个选项中包罗这些词应当起首解除它。

　　而包罗如usually, sometimes, probably这些词的选项则更有能够是准确选项。

　　操练：

　　1.The sustained massive use of pesticides in farming has two effects that are especially pernicious. First, it often kills off the pests’ natural enemies in the area. Second, it often unintentionally gives rise to insecticide-resistant pests, since those insects that survive a particular insecticide will be the ones most resistant to it, and they are the ones left to breed.

　　From the passage above, it can be properly inferred that the effectiveness of the sustained massive use of pesticides can be extended by doing which of the following, assuming that each is a realistic possibility?

　　A.using only chemically stable insecticidesB.periodically switching the type of insecticide usedC.gradually increasing the quantity of pesticides usedD.leaving a few fields fallow every yearE. breeding higher-yielding varieties of crop plants

　　2.Which of the following, if true, most logically completes the argument below?

　　Manufacturers are now required to make all cigarette lighters child-resistant by equipping them with safety levers. But this change is unlikely to result in a significant reduction in the number of fires caused by children playing with lighters, because children given the opportunity can figure out how to work the safety levers and ____.

　　A.the addition of the safety levers has made lighters more expensive than they were before the requirement was institutedB. adults are more likely to leave child-resistant lighters than non-child-resistant lighters in places that are accessible to childrenC. many of the fires started by young children are quickly detected and extinguished by their parentsD. unlike child-resistant lighters, lighters that are not child-resistant can be operated by children as young as two years oldE. approximately 5000 fires per year have been attributed to children playing with lighters before the safety levers were required

　　3.Which of the following most logically completes the passage?

　　A business analysis of the Appenian railroad system divided its long-distance passenger routes into two categories: rural routes and interurban routes. The analysis found that, unlike the interurban routes, few rural routes carried a high enough passenger volume to be profitable. Closing unprofitable rural routes, however, will not necessarily enhance the profitability of the whole system, since ____.

　　A. a large part of the passenger volume on interurban routes is accounted for by passengers who begin or end their journeys on rural routesB. within the last two decades several of the least used rural routes have been closed and their passenger services have been replaced by busesC. the rural routes were all originally constructed at least one hundred years ago, whereas some of the interurban routes were constructed recently for new high-speed express trainsD. not all of Appenia’s large cities are equally well served by interurban railroad servicesE. the greatest passenger volume, relative to the routes’ capacity, is not on either category of long-distance routes but is on suburban commuter routes

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