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1、智课网GRE备考资料新东方GREargument范文10篇（二）Thefollowingisalettertotheeditorofanenvironmentalmagazine"Thedeclineinthenumbersofamphibiansworldwideclearlyindicatestheglobalpollutionofwaterandair.TwostudiesofamphibiansinYosemiteNationalParkinCaliforniaconfirmmyconclusion.In1915th
2、ereweresevenspeciesofamphibiansinthepark,andtherewereabundantnumbersofeachspecies.However,in1992therewereonlyfourspeciesofamphibiansobservedinthepark,andthenumbersofeachspeciesweredrasticallyreduced.ThedeclineinYosemitehasbeenblamedontheintroductionoftroutintothepa
3、rk'swaters,whichbeganin1920(troutareknowntoeatamphibianeggs).ButtheintroductionoftroutcannotbetherealreasonfortheYosemitedeclinebecauseitdoesnotexplaintheworldwidedecline."[SampleEssay]Inthisargument,thewriteroftheletterconcludesthatglobalpollutionofwaterandairhasc
4、ausedadeclineinthenumberofamphibiansworldwide.Tosupporthisorherconclusion,thewritercitestheresultsoftwostudies,seventy-fiveyearsapart,thatpurportedlyshowthatthenumberofamphibiansinoneparkinCalifornia,YosemiteNationalPark,havedrasticallydeclined.Additionally,thewrit
5、ercastsasideagivenreasonforthedecline,statingthattheintroductionoftrouttothepark(whoareknowntoeatamphibianeggs)doesnotexplaintheworldwidedeclineinthenumberofamphibians.Thisargumentdefiessimplelogicandsuffersfromseveralcriticalfallacies.Firstofall,theargumentisbased
6、ononlytwostudiesinonespecificpartoftheworld,YosemiteNationalParkinCalifornia.Itisimpossibletopinpointaworldwidetheoryforthedeclineofamphibiansbasedonanynumberofstudiesinonlyonespecificlocationintheworld-thespecificvarietiesofamphibians,geographicalconditionsandothe
7、rlocationspecificvariablesprohibitsuchasweepinggeneralization.Oneveryspecificlocationcannotbeusedasamodelforallotherlocations,evenwithinoneparticularcountry,letalonetheentireworld.ThewriterprovidesnoevidencedwhatsoeverthatlinkstheYosemitestudywithanypurportedeffect
8、sanywhereelseintheglobalenvironment.Secondly,thetwoseparatestudiesweredoneseventy-fiveyearsapart.Thereisnoevidencethatthetwostudieswereconductedi
