技巧篇 如何巧用反义推理提升托福阅读速度.docx
《技巧篇 如何巧用反义推理提升托福阅读速度.docx》由会员分享,可在线阅读,更多相关《技巧篇 如何巧用反义推理提升托福阅读速度.docx(8页珍藏版)》请在冰豆网上搜索。
技巧篇如何巧用反义推理提升托福阅读速度
技巧篇:
如何巧用反义推理提升托福阅读速度?
如何巧用反义推理提升托福阅读速度?
时间不够,无法阅读全文是很多考生在托福阅读中无法拿到高分的核心原因,但是直接做题又不知道选择的答案是否正确符合文章意思,这往往使得我们在备战阅读考试的效果大打折扣。
提高阅读速度是一个需要长期训练的过程,为了短期提高阅读分数和学习效果,三立在线小编带大家来对比一些方法来高效的发现题目的切入点并且解决问题拿到分数。
我们来直接看题:
Asymbioticrelationshipisaninteractionbetweentwoormorespeciesinwhichonespecieslivesinoronanotherspecies.Therearethreemaintypesofsymbioticrelationships:
parasitism,commensalism,andmutualism.Thefirstandthethirdcanbekeyfactorsinthestructureofabiologicalcommunity;thatis,allthepopulationsoforganismslivingtogetherandpotentiallyinteractinginaparticulararea.
1.Whichofthefollowingstatementsaboutcommensalismcanbeinferredfromparagraph1?
○Itexcludesinteractionsbetweenmorethantwospecies.
○Itmakesitlesslikelyforspecieswithinacommunitytosurvive.
○Itssignificancetotheorganizationofbiologicalcommunitiesissmall.
○Itsroleinthestructureofbiologicalpopulationsisadisruptiveone.
✔解法1:
初学者在看到这样题目的时候,会先把文章看完甚至翻译一遍,认为理解了自然就能选对答案。
这是正确率最高最靠谱的做法,但最大的缺陷是考试时无法在短时间内理解文章并且做完题目。
所以在阅读能力不是很强的时候,尽量不要使用看完理解再做题的方法。
✔解法2:
定位规律
•题干关键词:
commensalism
•文中定位点:
Therearethreemaintypesofsymbioticrelationships:
parasitism,commensalism,andmutualism.有三种共生关系:
寄生、共生、互利共栖。
说的是题干关键词本身的内容,无法对应选项。
•再往后读啊读啊读啊……理论上来说看到这里应该能得到答案了,但是……但是……看看选项?
○共生关系不包括超过两个物种之间的相互作用
○共生关系使得物种在生物团体中难以生存
○共生关系在生物群体中的重要性是小的
○共生关系在生物结构中的角色是引起混乱的
选哪个?
!
正确答案是哪个啊?
这里我们要学的是一个小套路,我们把文中内容和选项都理解后得到这样的一个逻辑:
文章:
第一个和第三个在一个生物团体结构中是重要的;意思是,所有的有机体居住在一起并且在特定的区域相互作用。
推理模式:
第一个(寄生)和第三个(互利共栖)在一个生物团体结构中是重要的→第二个(共生)是不重要的
☞所以选C
这个切入点你发现了吗?
但这样分析题目,对我们来说有什么实际的意义呢?
这篇文章的核心就是希望大家能高效的发现题目的切入点并且解决问题。
于是,对于这道题来说发现一个能够广泛使用的规律,比起选出正确答案更有意义:
让我们聊聊刚才在题目中的推理模式:
第一个(寄生)和第三个(互利共栖)在一个生物团体结构中是重要的→第二个(共生)是不重要的。
这个推理模式我叫做反义推理(有些也叫反向推理、取非,意思一致),是托福阅读推理题常用的推理模式,并且在细节题、否定事实信息题(NOTEXCEPT)和判断其他题型错误选项的时候经常使用,也是最常见的一种思维模式。
反义推理的核心来自于归约(reduction),意思是当未知量与已知量看上去无法匹配的时候,在二者之间搭上一个桥梁来使得找答案变得更简单。
让我们来看看类似题目中用到反义推理的高效表现
Withquestionsuchastheseclearlybeforethem,thescientistsaboardtheGlomarChallengerprocessedtotheMediterraneantosearchfortheanswers.OnAugust23,1970,theyrecoveredasample.Thesampleconsistedofpebblesofhardenedsedimentthathadoncebeensoft,deep-seamud,aswellasgranulesofgypsumandfragmentsofvolcanicrock.Notasinglepebblewasfoundthatmighthaveindicatedthatthepebblescamefromthenearbycontinent.Inthedaysfollowing,samplesofsolidgypsumwererepeatedlybroughtondeckasdrillingoperationspenetratedtheseafloor.Furthermore,thegypsumwasfoundtopossesspeculiaritiesofcompositionandstructurethatsuggestedithadformedondesertflats.Sedimentaboveandbelowthegypsumlayercontainedtinymarinefossils,indicatingopen-oceanconditions.AstheydrilledintothecentralanddeepestpartoftheMediterraneanbasin,thescientiststooksolid,shiny,crystallinesaltfromthecorebarrel.Interbeddedwiththesaltwerethinlayersofwhatappearedtobewindblownsilt.
history=""geologic="">
4.Whichofthefollowingcanbeinferredfromparagraph3aboutthesolidgypsumlayer?
○Itdidnotcontainanymarinefossil.
○Ithadformedinopen-oceanconditions.
○Ithadoncebeensoft,deep-seamud.
○Itcontainedsedimentfromnearbydeserts.
✔解析:
这道题很容易,和上一题是同样的套路
•题干关键词:
thesolidgypsumlayer
•文中定位点:
Sedimentaboveandbelowthegypsumlayercontainedtinymarinefossils,indicatingopen-oceanconditions.
•利用反义推理:
在石膏层上面和下面的沉积层中包含小海洋化石→石膏层不包含海洋化石
☞所以选A
而在我们熟练了在一个完整概念下不同因素之间的反义推理后(例如整体是【A,B,C】,文中说AB重要则C不重要,AB有东西则C没有),将完整概念拓展到时间点前后区分概念会使得做题变得更加的简单:
【Paragraph2】Yetthismostfundamentalstandardofhistoricalperiodizationconcealsahostofparadoxes.Nearlyeverymovietheater,howevermodest,hadapianoororgantoprovidemusicalaccompanimenttosilentpictures.Inmanyinstances,spectatorsintheerabeforerecordedsoundexperiencedelaborateauralpresentationsalongsidemovies'visualimages,fromtheJapanesebenshi(narrators)craftingmultivoiceddialoguenarrativestooriginalmusicalcompositionsperformedbysymphony-sizeorchestrasinEuropeandtheUnitedStates.InBerlin,forthepremiereperformanceoutsidetheSovietUnionofTheBattleshipPotemkin,filmdirectorSergeiEisensteinworkedwithAustriancomposerEdmundMeisel(1874-1930)onamusicalscorematchingsoundtoimage;theBerlinscreeningswithlivemusichelpedtobringthefilmitswideinternationalfame.
5.Paragraph2suggestswhichofthefollowingaboutEisenstein’sfilmTheBattleshipPotemkirf?
○ThefilmwasnotaccompaniedbysoundbeforeitsBerlinscreening.
○ThefilmwasunpopularintheSovietUnionbeforeitwasscreenedinBerlin.
○Eisenstein’sfilmwasthefirstinstanceofcollaborationbetweenadirectorandacomposer.
○Eisensteinbelievedthatthemusicalscoreinafilmwasasimportantasdialogue.
✔解析:
•题干关键词:
Eisenstein’sfilmTheBattleshipPotemkirf,大写字母很容易找
•文中定位点:
InBerlin,forthepremiereperformanceoutsidetheSovietUnionofTheBattleshipPotemkin,filmdirectorSergeiEisensteinworkedwithAustriancomposerEdmundMeisel(1874-1930)onamusicalscorematchingsoundtoimage;theBerlinscreeningswithlivemusichelpedtobringthefilmitswideinternationalfame.
•利用反义推理:
在柏林首次公演→在柏林之前没有演过
☞所以选A
对我们来说,掌握了时间点前后不一致,可以使用反义推理这个方法,能让我们更快的得到答案:
TheareascoveredbythismaterialweresovastthattheicethatdepositeditmusthavebeenacontinentalglacierlargerthanGreenlandorAntarctica.Eventually,Agassizandothersconvincedgeologistsandthegeneralpublicthatagreatcontinentalglaciationhadextendedthepolaricecapsfarintoregionsthatnowenjoytemperateclimates.Forthefirsttime,peoplebegantotalkabouticeages.Itwasalsoapparentthattheglaciationoccurredintherelativelyrecentpastbecausethedriftwassoft,likefreshlydepositedsediment.Wenowknowtheageoftheglaciationaccuratelyfromradiometricdatingofthecarbon-14inlogsburiedinthedrift.Thedriftofthelastglaciationwasdepositedduringoneofthemostrecentepochsofgeologictime,thePleistocene,whichlastedfrom1.8millionto10,000yearsago.AlongtheeastcoastoftheUnitedStates,thesouthernmostadvanceofthisiceisrecordedbytheenormoussandanddriftdepositsoftheterminalmorainesthatformLongIslandandCapeCod.
5.Itcanbeinferredfromparagraph2thatAgassizandothergeologistsofhistimewerenotabletodetermine
○whichgeographicregionshadbeencoveredwithicesheetsinthelasticeage
○theexactdatesatwhichdriftshadbeendepositedduringthelasticeage
○theexactcompositionofthedriftslaidduringthelasticeage
○howfarsouthalongtheeastcoastoftheUnitedStatestheicehadadvancedduringthelasticeage
✔解析:
•题干关键词:
Agassizandothergeologistsofhistimewerenotabletodetermine
•文中定位点:
Wenowknowtheageoftheglaciationaccuratelyfromradiometricdatingofthecarbon-14inlogsburiedinthedrift.
•利用反义推理:
Wenowknow……→Agassizandothergeologistsofhistimewerenotabletodetermine
☞所以选B
ItwasnotuntiltheCambrianperiod,beginningabout600millionyearsago,thatagreatproliferationofmacroscopicspeciesoccurredonEarthandproducedafossilrecordthatallowsustotracktheriseandfallofbiodiversity.SincetheCambrianperiod,biodiversityhasgenerallyrisen,buttherehavebeensomenotableexceptions.Biodiversitycollapseddramaticallyduringatleastfiveperiodsbecauseofmassextinctionsaroundtheglobe.Thefivemajormassextinctionsreceivemostoftheattention,buttheyareonlyoneendofaspectrumofextinctionevents.Collectively,morespecieswentextinctduringsmallereventsthatwerelessdramaticbutmorefrequent.Thebestknownofthefivemajorextinctionevents,theonethatsawthedemiseofthedinosaurs,istheCretaceous-Tertiaryextinction.
2.Paragraph1supportswhichofthefollowingstatementsaboutlifeonEarthbeforetheCambrianperiod?
○Biodiversitylevelsweresteady,asindicatedbythefossilrecord.
○Levelsofbiodiversitycouldnotbetracked.
○Themostdramaticextinctionepisodeoccurred.
○Fewmicroscopicspeciesexisted.
✔解析:
•题干关键词:
beforetheCambrianperiod?
•文中定位点:
ItwasnotuntiltheCambrianperiod,beginningabout600millionyearsago,thatagreatproliferationofmacroscopicspeciesoccurredonEarthandproducedafossilrecordthatallowsustotracktheriseandfallofbiodiversity.
•利用反义推理:
ItwasnotuntiltheCambrianperiod……allowsustotracktheriseandfallofbiodiversity→Levelsofbiodiversitycouldnotbetracked.
☞所以选B
反义推理这个模式还可以被用在NOTEXCEPT题当中:
Fivecenturieslater,about7700B.C.,anewvillageroseonthemound.Atfirsttheinhabitantsstillhuntedgazelleintensively.Then,about7000B.C.,withinthespaceofafewgenerations,theyswitchedabruptlytoherdingdomesticatedgoatsandsheepandtogrowingeinkorn,pulses,andothercerealgrasses.AbuHureyragrewrapidlyuntilitcoverednearly30acres.Itwasaclose-knitcommunityofrectangular,one-storymud-brickhouses,joinedbynarrowlanesandcourtyards,finallyabandonedabout5000B.C..Manycomplexfactorsledtotheadoptionoftheneweconomies,notonlyatAbuHureyra,butatmanyotherlocationssuchas'AinGhazal,alsoinSyria,wheregoattoebonesshowingthetelltalemarksofabrasioncausedbyfoottethering(binding)testifytoearlyherdingofdomesticstock.
10.Accordingtoparagraph5,after7000B.C.thesettlementofAbuHureyradifferedfromearliersettlementsatthatlocationinallofthefollowingEXCEPT
○thedomesticationofanimals
○theintensivehuntingofgazelle
○thesizeofthesettlement
○thedesignofthedwellings
✔解析:
•题干关键词:
after7000