gmat阅读解题思路-智课教育

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1、智课网GMAT备考资料GMAT阅读解题思路-智课教育讨论型文章的核心考点是讨论中得出的因果关系，因此其重心在于因果。下面我们参照《GMAT考试官方指南(第10版)》中的实例，来体会一下GMAT阅读文章中以“因果”为核心的解题思路。本文就因果关系先为大家介绍一下GMAT阅读解题思路。因果关系GMAT阅读解题思路例1：(共6道题，在此仅将其中3道作为例证)Althoughgeneticmutationsinbac-teriaandvirusescanleadtoepidemics,someepidemicsarecausedbybacteriaandvirusesthathaveunder

2、gonenosig-nificantgeneticchange.Inanalyzingthelatter,scientistshavediscoveredtheimportanceofsocialandecologicalfac-torstoepidemics.Poliomyelitis,forexample,emergedasanepidemicintheUnitedStatesinthetwentiethcentury;bythen,modernsanitationwasabletode-layexposuretopoliountiladolescenceoradulthood,a

3、twhichtimepolioinfec-tionproducedparalysis.Previously,in-fectionhadoccurredduringinfancy,whenittypicallyprovidedlifelongimmunitywithoutparalysis.Thus,thehygienethathelpedpreventtyphoidepidemicsindirectlyfosteredaparalyticpolioepidemic.AnotherexampleisLymedisease,whichiscausedbybacteriathataretra

4、nsmittedbydeerticks.ItoccurredonlysporadicallyduringthelatenineteenthcenturybuthasrecentlybecomeprevalentinpartsoftheUnitedStates,largelyduetoanincreaseinthedeerpopulationthatoccurredsimulta-neouslywiththegrowthofthesuburbsNewOrientalEnglishandincreasedoutdoorrecreationalac-tivitiesinthedeer'sha

5、bitat.Similarly,anoutbreakofdenguehemorrhagicfeverbecameanepidemicinAsiainthe1950'sbecauseofecologicalchangesthatcausedAedesaegypti,themosquitothattransmitsthedenguevirus,toproliferate.ThestageisnowsetintheUnitedStates,foradengueepidemicbecauseoftheinadvertentintroductionandwidedisseminationofan

6、othermosquito,Aedesalbopictus.总体思路：本文提出了一种观点：有些流行病是由社会和生态因素造成的。接着下文举了三个例子以及四个因果关系来支持此观点。这时我们首先要明确逻辑考点，即四个因果关系中一定会出题，因此文中四个因果关系词或短语后面的句子一定要细读，而其他部分略读即可。在明确了这个基本思路以后，我们来详细分析几道考题：1.Thepassagesuggeststhatalackofmodernsanitationwouldmakewhichofthefollowingmostlikelytooccur?(A)AnoutbreakofLymedisease.

7、(B)Anoutbreakofdenguehemorrhagicfever.(C)Anepidemicoftyphoid.(D)Anepidemicofparalyticpolioamonginfants.(E)Anepidemicofparalyticpolioamongadolescenceandadults.从题目可知，该题的提问对象是：modernsanitation，因此我们需先回到原文定位。这里需要明确的一点是：原文的第11行和第1