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新托福写作高分范文Newfindingsinscientificareascanexamineandchallengepreviousassumptions.Arecentfindingconcerningthemeerkat,aburrow-dwellinganimalintheAfricangrasslands,hascastdoubtupontheconventionalideasofaltruism,thetypeofbehaviorinwhichananimalsacrificesitsowninterestsforthebenefitofanother.Meerkatswerepreviouslythoughttobeatypicalaltruisticanimal.Whentheothermeerkatsfeed,thereisusuallyonemeerkatwatchingoutforpredators.Thesentinelmeerkatgainsnothing,itseems,foritcanneithereatnorescapequicklyandsuccessfullyafterraisinganalarm.However,inthenewfindings,it'sshownthatthesentinelmeerkathasalreadyeatenfoodbeforestandingguard,thuscontradictingthethoughtthatithasanemptybellywhileonthelookout.Inadditiontothis,thesentinelisthefirsttoseeapredator,soitisthefirsttoescape.Itisalsoplacednearestaburrow,makingitrelativelyeasiertoflee.Moreover,itsalarmcallsmaycausethegroupeithertogatherortospreadrapidly,whichmayattractthepredator'sattention,providingthesentinelabetterchancetoescape.Thesameiswithsupposedhumanaltruisticbehavior.Organdonationtostrangersmaybeconsideredanunselfishact,whichprovideslittlerewardtothedonator.However,bydonatinghisorgan,thedonatormaymostprobablyreceivepraiseandappreciationfromothers.Isn'tthisnon-materialreward,whichincreasesone'sselfworth,satisfactorytoanyone?新托福写作高分范文2Asknowledgeandexperienceserveastwimtowersinproblem-solving,oneisoftenpresentedwithtwomajorpathsthatpavethewayforfinalfulfillment,eitthertowrackhisbrain,justlikewhathappenedtoNeuton,siitingformanyyearsunderanappletreeandeventuallyfiguringoutondofthegreatestuniversalrulesthatgovernthewholeglobe,ortoseekforothers’widsomthroughtheiradvice,justasinthecaseofBenjininFranklin,gatheringgreatmindsunderoneroofandthenestablishingamostworld-renownlibray.Bothwayswork.Whenapracticalgoalisinvolved,however,BenjiminFranklinmaybestberegarededasarolemodelinthisrespectandaskingpeopleforadviceoftenturnouttobetheprimealternative.Experienceandknowledgeborrowedorlearnedfromothers’advicecontributegreatlytoeffectivenessandeffec