阅读理解+七选五Ⅰ.阅读理解AOnNovember7，LewisPughcompletedaone-kilometerswiminthefreezingwatersofKingEdwardCove，offSouthGeorgiainAntarctica.Hewaswearingonlyhisswimmingglasses，capandspeedos!Pughisanadvocateforouroceansandseas，workingtoprotecttheseecosystemwiththeirlargediversityofmarine(海洋的)life.Whenaskedwhyhedoesn’twearawetsuit，Lewissays，“Iaskworldleaderstodoeverythingtheycantoprotectouroceans.Sometimesthestepstheyneedtotakearedifficultandunpopular.IfI’maskingthemtobecourageous，Imustalsobe.Swimminginawetsuitwouldnotsendtherightmessage.”IttookPughabout19minutestocompletetheone-kilometerswiminAntarcticawherethewateraveragedabout1.6degreesCelsius(摄氏度)．Hesaysthathisbodycanonlytolerateabout20minutesinthefreezingwatersbeforeitstartsshuttingdown.Asheswims，hisbodytemperaturesteadilydrops，whichinturncauseshismuscle(肌肉)controltodrop，slowinghimdown.Whenheisdonewithhisswim，hissupportteamrusheshimtoahotshowerandittakesalmostanhourforhisbodytemperaturetoreturntonormal.DoctorsandPughcautionthatonemustreceivemonthsoftrainingtoswiminsuchcoldwaters.Evenexpertswimmerswhoareunusedtofreezingwatercandrownwithinminutesbecauseofthephysicalshockexperiencedbythebody.Pughsayshetrainedforsixmonthsbeforethisswim.ThisisnotthefirsttimethatLewishasswumindangerousconditions.In2007，heswamonekilometerintheNorthPoletodrawattentiontothemeltingArcticiceduetoclimatechange.In2015，heswamintheBayofWhalesinAntarctica’sRossSeaaspartofhissuccessfulcampaigntohelpsetupamarinereservethere.1．WhydidLewisPughswimwithoutawetsuit?A．Toswimfaster.B．Toshowhisbravery.C．Tobuilduphisbody.D．Towinpublicattention.2．Whatdoestheunderlinedword“it”inParagraph3referto?A．Hisbody.B．Thewater.C．Hisbodytemperature.D．Thewatertemperature.3．What’sPugh’sadviceaboutswimminginfreezingwaters?A．Onemustbefullyprepared.B．Oneshouldbeexpertatswimming.C．Oneshouldbereadytotakeonchallenges.D．Onemustbeusedtolongdistanceswimming.4．Whatmaybethebesttitleforthetext?A．LewisPugh：SwimmingforaCauseB．HowtoSurviveaSwiminColdWatersC．HowtoPrepareforExtremeSwimmingD．LewisPugh：AchievingtheImpossibleBPeopletypicallywashtheirhandsseveraltimesadayintheUnitedStates，buttheydoitatafarhighertemperaturethanisnecessarytokillgerms，anewstudysays.Theenergywasteisequivalenttothefueluseofasmallcountry.AmandaR．Carrico，aresearchassistantprofessorattheVanderbiltInstituteforEnergyandEnvironmentinTennessee，toldNationalGeographicthathandwashingisoften“acasewherepeopleactinwaysthattheythinkareintheirbestinterest，buttheyinfacthaveinaccuratebeliefsoroutdatedperceptions.”Carricosaid，“It’scertainlytruethatheatkillsbacteria，butifyouweregoingtousehotwatertokillthemitwouldhavetobeawaytoohotforyoutotolerate.”Carricosaidthatafterareviewofthescientificliterature，herteamfound“noevidencethatusinghotwaterthatapersoncouldstandwouldhaveanybenefitinkillingbacteria.”Evenwaterascoldas40°F(4.4°C)appearedtoreducebacteriaaswellashotterwater，ifhandswerescrubbed，rinsed(冲洗)anddriedproperly.Usinghotwatertowashhandsisthereforeunnecessary，aswellaswasteful，Carricosaid，particularlywhenitcomestotheenvironment.Accordingtoherresearch，peopleusewarmorhotwater64percentofthetimewhentheywashtheirhands.Usingthatnumber，Carrico’steamcalculatedasignificantimpactontheplanet.“Althoughthechoiceofwatertemperatureduringasinglehandwashmayappearunimportant，...
