托福TPO50听力文本+答案+解析+音频下载(上)

得听力者得天下，托福听力对于考生来说至关重要!如何攻克托福听力，除了要多听，托福TPO听力也是托儿必刷的真题.今天，小编为托福考生们带来了托福TPO50听力，希望可以帮助广大托福考生轻松备考托福。本文给大家分享了托福TPO50听力文本+答案+解析+音频下载。由于文章太长，我们将分成上、下两篇。下篇请点击：托福TPO50听力文本+解析+答案+音频下载(下)托福听力TPO50文本+答案+解析+音频下载(上)托福听力TPO50文本第一篇民意测验StrawPollListentoaconversationbetweenastudentandapoliticalfessor.Student:I’mnotsureifyouknowbutIwouldliketogototheernmentthisyear.Teacher:Oh,congratulations!Iwasinstudentgovernmentmyselfasanundergraduate.Ittaughtmealotaboutthepoliticalprocess.Infact,theexperiencesolvedmyproblemofwhattodowithmylife.Itreallycementederestinbecomingapoliticalscientist.Student:Cool!Anyway,thereasonIcamebyiswearegettingreadytoconductastrawpolloncampus,youknow,holdaninformalballotsincethegeneralelectionisjustacoupleofmonthsaway.Wewanttogetafieldfromthestudents'bodiespoliticalleanings,likewhostudentsareplanningtovotefor,whichpoliticalpartypeopleidentifywith,thatsortofthing.Teacher:I’msure.Ihelpstudentsrunthestrawpollonceyearsago,uh,itwasalotofwork.Mostlybecauseweusepaperballots,andstayedupallnightcountingthem.Butifyouusecomputers……Student:Yeah,wearecreatingawebsiteforourstudentstobeabletovoteonline.Em,wearelookingforafacultyadvisortohelp,actually.Iwashopingyoumightbeinterested.Teacher:Oh,I’mflattered,John.Butmyscheduleissojammed.I’mteachingtwoseminars,yourintro-course,finishingupmyresearch.But,whataboutProfessorClan?Sheisnewinourdepartment.Plus,sheisawizputers.Student:Ok,Iwillaskher.Teacher:So,haveyoudecidedonthetopicforyourtermpaperyet?Student:Notreally.Teacher:Whynotwriteaboutyourstrawpoll?Sincethepaperisnotduetillaftertheelection,youcouldincludeyourresults.Maybecomparethemwiththerealelectionresults.Student:Butwouldthatbeenough?Imean,justcomparingnumbers?Teacher:Well,no,youneedtoprovidesomeanalysis,too.ButIwasthinking,thereisacoupleoflocalballotquestionsthisyear.Youknow,referenda,thevoterscaneithersupportornotsupport?Student:Right.Thereisoneonwhethertobansmokinginrestaurants,andanotherone……Ithinkiswhethertospendtaxdollarsforanewsportsarenainthecity.Teacher:Ah,Ok.Hereisanidea.Inregularelections,thevastmajorityofvotersignorereferenda.Theyvotefortheirfavoritecandidatesbutavoidballotquestions.Webelieveit'sbecausevotersaren’tfamiliarwiththequestionsordon’tunderstandthem.Butactivelyeducatingpeopleonballotquestionsrightbeforetheyvotecanimprovereferendumparticipationrates.Student:Inthatcase,maybewecouldhaveourstrawpollwebsitermationontheballotquestions,likehoweachproposalwouldaffectstudents.Teacher:Exactly.Andwhenyouwriteyourpaper,youcouldcomparethestudents’referendumvotingratetothegeneralpublics.Andincludeyouownanalysisoftheresults.Plus,thereisplentyofpublishresearchonreferendumvotingbehavior.Student:Thanks,ProfessorMiller.Ihavenoideathestrawpollcanactuallyhelpmeinmycoursework.托福TPO听力50音频下载：百度网盘链接：链接：/s/1pKFAflL密码：dlq2托福TPO听力50第一篇题目：Question1of5Whydoesthemangotoseetheprofessor?A.Tosuggestanideaforhisresearchproject.B.Totellherabouthiselectiontostudentgovernment.C.Toaskforherhelponapoliticalproject.D.Todiscussmethodsofgatheringpublicopinion.uestion2of5Whatistheprofessor'sattitudetowardherinvolvementinernmentasanundergraduate?A.Sheisgratefulthattheexperiencehelpedinspirehercareerchoice..B.Sheregretsthatherinvolvementtooktimeawayfromherstudies..C.Shewishesthatshehadbeenmoreactivethanshewas..D.Sheisgladthatherinvolvementenabledhertohelpotherstudents..Question3of5Whatisthestudentgovernment'smainreasonforconductingastrawpoll?A.Toeducatestudentsonthecandidates'positions.B.Toremindstudentstovoteintheupcomingelection.C.Tofindouthowstudentsfeelaboutthelocalreferenda.D.Togetanideaofstudents'politicalpreferences.Question4of5Whydoestheprofessormentionpaperballots?A.Toshowhowastrawpolldiffersfromanactualelection.B.Tostresstheimportanceofkeepingaccuraterecords.C.Toindicatethatconductingapollmaypresentchallenges.D.Tosuggestawaytoimprovecommunicationbetweenthestudentbodyandthestudentgovernment.Question5of5Whydoestheprofessordiscussvotingbehavioronreferenda?A.Toencouragethemantovoteonthelocalreferenda.B.Tohelpthemandevelopafocusforhistermpaper.C.Toexpressherskepticismthatvotingbehaviorcanbechanged.D.Toletthemanknowabouthercurrentresearchproject.托福听力TPO50文本第二篇AncientEgyptianGlass古埃及的玻璃制造Listentopartofalectureinanancienthistoryclass.Professor:Ok,lasttimewewerediscussingtradeandcommerceduringtheBronzeAge.AndIsaidalittleoverthreethousandyearsago,therewasquitealivelytradeamongthecountriesalongtheMediterraneanSea.Peoplearemakingobjectsoutofbronzesandtheywereusingbronzetoolstomakeothergoods.AndtheydeveloptradenetworkstotradethesegoodswithothercountriesaroundtheMediterranean.Oneofthethingstheytradedwasglass.AndrecentlytherewasanarcheologicalexcavationinEgypt,ontheNileRiveraroundwhereenterstheMediterraneanSeawheretheydiscoveredanancientglassfactory.Robert?Robert:IthoughtourtextbooksaidtheEgyptiansimportedtheirglassfromothercountries.Professor:Well,untilnowthat’swhattheevidenceseemedtosuggest.Imean,wehavesomeevidencethatsuggestedthattheEgyptiansweremakingglassobjects,butnotglass.Robert:Ok.Am……AmImissingsomething?Theyaremakingglassbuttheyarenotmakingglass?Professor:Isaidtheyweremakingglassobjects,right?Yousee,itwaspreviouslythoughtthattheyweren’tactuallymakingtherawglassitselfthattheywereimportingunfinishedglassfromMesopotamia,whichtodayisaregionconsistingofIraqandpartsofSyriaandTurkeyandIran,andsimplyreworkingit.MostarcheologistsbelievedthattheglassfactorieswereinMesopotamiabecausethat’swheretheoldestknownglassremainscomefrom.Yousee,therewastwostagesofglassmaking.Theprimaryproductionstagewheretheymadedisksofrawglass.Andtherewasthesecondarystagewheretheymeltedtherawglass,theglassdisks,andcreateddecorativeobjects,so,orwhatever.AndfromthisnewEgyptians’site,welearnedthattheprimaryproductionstagehadseveralsteps.Firsttheytookquartz,acolorlesstransparentmineralandcrushedit.Thentheytookthatcrushedquartzandmixeditwithplantash.Aplantashisjustwhatitsoundslike,theashesleftafteryouburntplantmaterial.Theyslowlyheatedthismixtureatarelativelylowtemperatureinsmallvessels,containerslikejarsmadeoutofclay.Andthatyieldedakindofglassymaterial.Theytookthisglassymaterialandgroundeditupintoapowderandthentheyusedmetallicdyetocolorit.Afterthat,theypouredthecoloredpowderoutintodisk-shapedmoldsandheatedituptoveryhightemperatures.Sothatitmelted.Aftercooled,theybreakthemolds,andinsidethereweretheglassdisks.ThesediskswereshippedouttoothersiteswithinEgyptandplacesaroundtheMediterranean.Theninthesecondaryphase,thediskswerereheated,andshapedintodecorativeobjects.Susan?Susan:Sowhatkindofobjectswerepeoplemakingbackthen?Professor:Well,themostcommonobjectswefound,mostlyinEgyptandMesopotamia,themostcommonobjectswerebeads.OnethingtheEgyptianwereveryverygoodatwasimitatingpreciousstones.Theycreatedsomebeadsthatlooksomuchlikeemeraldsandpearlsthatwasverydifficulttodistinguishthemfromtherealthing.Em,and……andalsobeautifulvessels,ah,withnarrownecks.Theywereprobablyreallyvaluablesotheywouldn’thavebeenusedtoholdcookingoilorcommonfooditems.Theyweremostlikelyusedforexpensiveliquids,likeperfume.Nowtheglassmadeatthisfactorywasmostlyred,togetthisredcolortheyusedcopper,inasophisticatedprocess.Ofcourse,anykindofglasswasveryvaluablesotheseredbottleswouldonlyhavebeenownedbywealthypeople.Infact,becauseitwassodifficulttomake,andsortofmysteriousandcomplicated,itwasprobablyaproductproducedfortheroyalfamily.Andtheyprobablyusedglasstoshowtheirpower.Also,beautifulexpensiveobjectsmadegreatgiftsifyouarelookingtoestablishorstrengththepoliticalalliances.AnditisquitepossiblethattheancientEgyptianswereactuallyexportingglass,notjustmakingitorimportingit.ThetradewithMesopotamiawasprobablyafriendlymutualtradebecauseaMesopotamiaglasswasusuallywhiteoryellow.SoMesopotamiansmightacceptsomethinglike,wewillgiveyoutwowhitedisksfortworeddisks.Thereisnoproofofthat,atleastnotyet.托福TPO听力50音频下载：百度网盘链接：链接：/s/1pKFAflL密码：dlq2题目：Question1of6Whatisthelecturemainlyabout?A.NewinformationaboutglassproductionanduseinancientEgypt.B.WhetherEgyptiansorMesopotamianswerethefirsttoinventglass.C.DifferencesbetweenEgyptianglassandotherkindsofglass.D.ReasonswhyancientEgyptiansimportedglassfromothercountries.Question2of6WhatistheimportanceofthearchaeologicalevidencerecentlyfoundinEgypt?A.ItsupportsthetheorythatancientEgyptiansimportedglassfromMesopotamia..B.ItprovesthatancientEgyptiansmadeglassobjectspriortotheBronzeAge..C.ItprovidesthefirstevidencethatglassmakingintheBronzeAgerequiredtwodifferentstages..D.ItshowsthatancientEgyptianswereproducingrawglass..Quertion3of6Theprofessordescribesaprocessformakingglassdisks.Summarizecessbyputtingthestepsinthecorrectorder.Clickonasentence.Thendragittothespacewhereitbelongs.A.Glass-likematerialisgroundupanddyedblueorred..B.Powderedmaterialisheatedatveryhightemperatures..C.Crushedquartzandplantashareheatedatlowtemperatures..D.Containersarebrokentoremoveglassdisks..Question4of6Basedonthelecture,whataretwokindsofglassobjectsthatwerevaluedinancientEgyptandMesopotamia?Clickon2answers.A.Beads.B.Cookingutensils.C.Containers.D.Windows.Question5of6Accordingtotheprofessor,whataretworeasonswhyancientEgyptiansexportedglass?Clickon2answers.A.Tobuildrelationshipswithforeignleaders.B.Toholdcookingoilthatwassoldinothercountries.C.Togetbronzetoolsfromothercountries.D.ToacquirecolorsofglassnotmadeinEgypt.Question6of6Whydoestheprofessorsaythis:A.ToemphasizethatglassobjectswereonlymadeinancientEgypt.B.Tofindoutwhatthestudentdoesnotunderstand.C.Toindicatethattherewasnocontradictioninherpreviousstatement.D.Tocorrectwhatshesaidinherpreviousstatement.托福听力TPO50文本第三篇TheClassificationOfCreatures生物分类Listentopartofalectureinabiologyclass.Processor:Ok.Therearetwomajortypesofclassifiersintheworld,peoplewecalllumpersandpeoplewecallsplitters.Alumperissomeonewhotriestoputasmanythingsaspossibleinonecategory.Splittersliketoworkforthedifferencesandputthingsinasmanydifferentcategoriesaspossible.Bothlumpersandsplittersworkinthebusinessofdefiningbiologicalclassifications.ThegreatphilosopherAristotleisgenerallyconsideredthefirstpersontosystematicallycategorizethings.Hedividedalllivingotwogroups.Theywereeitheranimalorvegetable.Andthesecategoriesarewhatbiologistscametocall“kingdoms”.Soifitranaround,itwasananimal,amemberoftheanimalkingdom.Andifitstoodstill,andgrewinthesoil,itwasaplant,amemberoftheplantkingdom.Thissystem,organizingallothesetwokingdoms,workedverywellforquiteawhile,evenintotheageofthemicroscope.Withtheinventionofthemicroscope,inthelate1500s,wediscoveredthefirstmicroorganisms.Wethoughtthatsomewiggledandmovedaroundandothersweregreenandjustsatthere.Sotheonesthatmovedlikeanimalswereclassifiedasanimals,andthemoreplant-likeonesasplants.Oh,beforeIgoonImustmentionCarolusLinnaeus.Ahundredyearsorsoaftertheinventionofthemicroscope,CarolusLinnaeusdevisedasimpleandpracticalsystemforclassifyinglivingthings,accordingtotheranksofcategorizationstillinusetoday——class,order,familyandsoon.AndbyfurtherbestaspectoftheLinnaeussystem,isthegeneraluseofbinomialnomenclature,havingjusttwonamestodescribeanylivingorganism.Thisreplacedtheuseoflongdescriptivenames,aswellascommonnameswhichvaryfromplacetoplaceandlanguagetolanguage.Binomialnomenclaturegiveseveryspeciesauniqueandstabletwo-wordname,agreeduponbybiologistsworldwide.Butnoteverythingaboutthissystemremainedunchanged.Takeforexamplethemushroom,afungus.Itgrewupfromthegroundandlookedlikeaplant.Soitwasclassifiedasaplant.Butusingthemicroscopewediscoveredthatafunguscontainsthesemicroscopicthread-likecellsthatrunallovertheplace.Andsoit’sactuallynotthatplant-like.Sointhiscase,thesplitterseventuallywon,andgotathirdkingdomjustforthefungus.Andasmicroscopesimproved,wediscoveredsomemicroorganismsthatwereincrediblysmall.I’mtalkingaboutbacteria.Andwecouldseethattheydidn’thavewhatwecallanucleus.Sotheygottheirownkingdom,akingdomofverytinythingswithoutnucleoli.Sothenwehadseveralkingdomsforplantsandforanimals,andthedifferentkindsoffunguslikemushrooms,andforthesetinybacteria.Butwealsohadsomeothermicroorganismsthatdidn’tfitanywhere.Sobiologistgavethemtheirownkingdom.Andthisfifthkingdomwassortofanythingthatdoesn’tfitinthefirstfourkingdom,whichupsetsomepeople.Andthentherewasaquestionofviruses.Viruseshavesomecharacteristicsoflifebutdon’treproduceontheirownoruseenergy.Sowestilldon’tknowwhattodowiththem.Thelumperswanttokeepvirusesinthecurrentsystem.Someofthesplitterssaytogivethemaseparatekingdom.Andtheextremesplitterssaythatviruseshavenothingatalltodowithlivingthingsandkeepthemoutofmydepartment.Recentresearchthoughhasmovedtoseeyetanotherdirection.Nowadayswhenwewanttodeterminethecharacteristicsofsomething,welookatitsbiochemistryanditsgeneticmaterial.Andwhatwe’vediscoveredisthatsomebacteriaarenotliketheothers.Manyofthesearecalledextremophiles.Theyliveinverystrangeplaces,inpolariceorinaboilingwaterofhotspringsorinwatersosalty(that)otherorganismscouldn’tlivethere.Extremophilestendtohaveadifferentchemistryfromotherbacteria,achemistrythatinsomecaseisactuallymorerelatedtoplantsandanimalsthantopreviouslyknownbacteria.Sowhattodowiththisstrangebacteria?Well,onethingwe’vedoneiscreatinganewsetofcategories,thedomains,overarchingthedifferentkingdoms.Biologistsnowrecognizethreedomains.Butevenaswetalkaboutthesenewdomains,well,comebackinafewyearsanditmightallbedifferent.托福TPO听力50音频下载：百度网盘链接：链接：/s/1pKFAflL密码：dlq2题目：Question1of6Whatisthelecturemainlyabout?A.Theimportanceofclassifyinganisms.B.Thehistoryofbiologicalclassification.C.Theimpactofthemicroscopeonbiologicalclassification.D.Thenamingofnewlydiscoveredorganisms.Question2of6Whydoestheprofessordescribe“lumpers”and“splitters”?A.Toemphasizeonedifferencebetweenearlyandmodernbiologists.B.Topointoutthatearlybiologicalclassificationswer