大学英语六级(CET-6)2020年模拟试卷

大学英语六级(CET-6)2020年模拟试卷PartIWriting(30minutes)注意：此部分试题在答题卡1上。Directions:Forthispart,youareallowed30minutestowriteashortessayentitledTheDecliningEmpoymentRateofUniversityGraduatesYoushouldwriteatleast150wordsbasedonthechartandoutlinegivebelow:1.近几年来大学毕业生就业率越来越低；2.产生这种现象的原因；3.我们大学生应该怎么做？PartIIReadingComprehension（SkimmingandScanning）（15minutes）Directions:Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Forquestions1-4,markY（forYES）ifthestatementagreeswiththeinformationgiveninthepassage;

N（forNO）ifthestatementcontradictstheinformationgiveninthepassage;NG（forNOTGIVEN）iftheinformationisnotgiveninthepassage.Forquestions5-10,completethesentenceswiththeinformationgiveninthepassage.WhatWillWeDoForWorkIbelievethat90%ofwhite-collarjobsintheU.S.willbeeitherdestroyedoralteredbeyondrecognitioninthenext10to15years.That'sacatastrophicprediction,giventhat90%ofusareengagedinwhite-collarworkofonesortoranother.Evenmostmanufacturingjobsthesedaysareconnectedtosuchwhite-collarservicesasfinance,humanresourcesandengineering.ItalkedtoanoldLondonloadersometimeback.Heallowedthatin1970ittook108guysaboutfivedaystounloadatimbership.Thencamecontainerization.Thecomparabletasktodaytakeseightfolksoneday.Thatis,a98.5%reductioninman-days,from540totaltojusteight.Thistimetheproductivityaimstoreconstruct——makethatdeconstruct——thewhite-collarworld.Infact,Iseeafive-sidedmovementthatwillbringtomyapparentlyfantastic“90%in10years”prediction.FIRSTThedestructivenatureofthecurrentflavorofcompetition,dotcomcompany.Sure,mostwillfail.Butthesurvivorswillexertenormouspressure—fast!—ontheBigGuys.WhenanAmazonoraCharlesSchwabmovesintoyourneighborhood,you'vegotmomentstoreact.OrtakekingentrepreneurJimClarkofNetscapefame.Hislatestventure,Healtheon/WebMD,intendstosqueezehundredsofbillionsofdollarsofwasteoutofthehealth-caresystem.Thesenewfirmsaimtocreatenothinglessthanhavocinthetheatersinwhichtheyoperate.SECONDEnterprisesoftware.It'sanameforthetoolsthatwillhookupeveryaspectofabusiness'sinnardsinternalorgans——personnel,production,sales,accounting——andthenhookupallthathooked-upstufftotherestofthe“family”ofsuppliersandthesuppliers'suppliersandwholesalersandretailersandendusers.Theyareyournightmare,these“white-collarrobots.”ThecomplexproductsfromGermansoftwaregiantSAPwilldotoyourcompany'sinternalorgansexactlywhatrobotsandcontainerizationdidtotheblue-collarworldin1960.Installingthesetoolsisnoteasy.Thetechnicalpartisdistressing;thepoliticsaredreadful.Whentheblue-collarrobotsarrived,theunionsrevoltedagainstit.Thistimeit'smanagementofficialwhoareopposingtechnologicalchange.Why?Thesetoolsthreatentheircomfortablestatus,carefullycraftedoverseveralgenerations.Buttherobotsdidcome.Andtheytriumphed.THIRDOutsourcingM.I.T.'sNo.1computerprofessor,MichaelDertouzos,saidIndiacouldeasilyboostitsGDPbyatrilliondollarsinthenextfewyearsperformingsecretwhite-collartasksforWesterncompanies.Heguessedthat50millionjobsfromthewhite-collarWestcouldgosouthtoIndia,whosepopulationhit1billionlastweek.Theaverageannualsalaryforeachofthose50millionnewIndianworkers:$20,000.FOURTHTheWeb.Ford,GMandDaimlerChryslerannounceararecombination.Theywilllinkalltheirtensofthousandsofsuppliersintoasingle,Internet-basednetwork.Thisentitywillinclude$250billionannuallyofsuppliers'products（andperhapsanadditional$500billionofthosesuppliers'suppliers'products）.Inshort,everypennyofwastewillbecompressedfromthehugeprocurementsystem.Theordercyclewillspeedupdramatically.Medibuyaimsforthesamehattrickinmedicalsupplies,DigitalThinkintraining,CarStationintheauto-body-shopworld.Thisisthewhite-hotworldofB2B（businesstobusiness）electroniccommerce,whichwillsoonencompasstrillionsofdollarsintransactions.FIFTHTimecompression.Ittook37yearsfortheradiotogetto50millionhomes.TheWebgotthereinfour.Hencemybeliefthatwhileittookaboutacenturytorevolutionizeblue-collarjobpractices,thisbravenewwhite-collarsocialsystemwillbemostlyinstalledinatenthofthattime——10years.Eachofthesefiveforcesisfact,notimage.Eachinfluencestheothersmultiplicatively.ThereforeIamunwillingtowithdrawmypredictionsaboutthepowerofthewhite-collarstormbearingdownonus.Upsettingmadnessisinprocess.Theseforcesareliberating.Blue-collarrobotsworkoutoffactoryandwarehouse.Thesamewillhappentowhite-collarwork.Mydaddiditfor41yearsattheBaltimoreGas&ElectricCo.Hewas,sadtosay,awhite-collarindenturedservant（契约佣工）.Theworldisgoingthroughmorefundamentalchangethanithasinhundreds,perhapsthousandsofyears.TheheadeconomistSandiaNationalLaboratories,ArnoldBaker,saidit'sthe“biggestchangesincethecavemenbeganbartering.”Doyouwanttobeplayer,afull-scaleparticipantwhoembraceschange?Hereistheopportunitytoparticipateinthelovely,messyplaygroundcalled“Let'sreinventtheworld.”Here'sanewrolemodelIcallIconWoman:Sheisturnedonbyherwork!Theworkiscool!Sheisanadventurer!SheistheCEOofherlife!MyIconWoman,ofcourse,embracesandexploitstheWeb.ShesubmitsherresumeontheWebandkeepsitperpetuallyactivethere.SheisrecruitedandnegotiatesandishiredontheWeb.SheistrainedontheWeb.ShecreatesandconductsbrilliantprojectsontheWebviaafar-flung“virtual”stableofteammates（mostofwhomshe'snevermet）.ShemanageshercareerontheWeb.Andshehasapersonalwebsite!Inapproximately2010,shewillbeathome,working——forthenextseveralmonths——forFordonacrueldifficultengineeringproblem.Her79-memberprojectteam,onlyoneofwhomshe'smetface-to-face（sheconsidersface-to-faceasaquaintidea）,comesfrom14nations.Herfullywiredhomeishercastle.Youmaybedisprove.Isthis“bewildandcrazyandWebbyandCEOofyourownlife”picture—anythingotherthanNewAge/neweconomy?Ithinkitisrelevantandrealratherthanwildandcrazy——onatleasttwoimportantscores.Oneisthatthoughmy“house”isinVermont,I'vehungmyprofessionallicenseinPaloAltosince1981.Allisbreakingloose“outthere/here.”Thesefolksmaysoundweird,buttheymayalsoberedefiningtheworld.Twoisbacktothefuture!Iconstantlyremindmymiddle-agedseminarparticipantsthatthequintessentialAmericansarechanging……Whoare?BenFranklin（thefatherofself-helpliterature）.RalphWaldoEmerson（self-reliancewashistrait）.WaltWhitman,motivationalleaderTonyRobbins,andBentonville,Arkansas'SamWalton……andBillGates.Twoisbacktothefuture!Iconstantlyremindmymiddle-agedseminarparticipantsthatthequintessentialAmericansarechanging……Whoare?BenFranklin（thefatherofself-helpliterature）.RalphWaldoEmerson（self-reliancewashistrait）.WaltWhitman,motivationalleaderTonyRobbins,andBentonville,Arkansas'SamWalton……andBillGates.WHATIF?Maybethewildnew-economyAmericaistheoldAmerica.Truertoourselves.Wecameheretobreakfree,tomakeourrecordsinourawkwardways.LikeGrandpa,Iamfacingextinction,onlybythisnewsetofpowerfulforces.Imakemostofmylivinggivingliveseminarsandtrainingprogramsandasamanagementconsultant.It'sallgravitatingtotheWeb——gravitating.It'smovingatthespeedoflight.Iamscramblingtoreinventmyself,tonotjust“cope”buttoexploitthenewcommunicationandconnectionmedia.注意：此部分试题请在答题卡1上作答。1.InU.S.,the90%ofthejobsarewhite-collarjobsasfinance,humanresourceandengineering.

2.Containerizationmakesa98.5%reductioninman-daysonunloadingtheship.3.AmazonwantstodeveloptheHealtheon/webMDtosavehundredsofbillionsofdollars.4.Themanagementofficialwon'twelcometheblue-collarrobotsthattheunionsrevoltagainst.5.TheprofessorMichaelDertouzosguessedthatIndiacouldincreaseGDPbyatrilliondollarsintheflowingfewyearsbywayof_____________.6.ThecombinationofFord,GMandDaimlerChrysleraimstocompresswastefrom_____________.7.Accordingtotheauthor,itwilltakeabout__________toreconstructnewwhite-collarworld.8.TheheadeconomistArnoldBakerbelievedthattheworldisgoingthroughthemostfundamentalchangesince__________.9.ThenewrolemodelIconWomandealswitheverythingaboutworkon_____________.10.Theauthorischanginghimselftotakefulladvantageof_________________.PartIIIListeningComprehension（35minutes）SectionADirections:Inthissection,youwillhear8shortconversationsand2longconversations.Attheendofeachconversation,oneormorequestionswillbeaskedaboutwhatwassaid.Boththeconversationandthequestionswillbespokenonlyonce.Aftereachquestiontherewillbeapause.Duringthepause,youmustreadthefourchoicesmarkedA）,B）,C）andD）,anddecidewhichisthebestanswer.ThenmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.注意：此部分试题请在答题卡2上作答。11.（A）Hewenttoseethedentistlastweek.

（B）Thewomanisadvisedtocancelherappointmentwiththedentist.

（C）Thewoman'stoothachewillbegoneverysoon.

（D）Thewomanshouldn'thaveputofftheappointment.12.（A）Thewomandoesn'tdriveveryoften.

（B）Thetrafficisalwaysverybad.（C）Takingpublictransportationisbetterthandriving.

（D）Thesubwayiscrowded.13.（A）studentandschooladministrator

（B）employerandemployee（C）jobseekerandinterviewer

（D）salespersonandcustomer14.（A）Decidewhethertheyshouldgotothemovies

（B）Decidewhichfoodtochoose（C）Gotoamoviealittlelater（D）Choosearestaurantassoonaspossible15.（A）Shecomplainsthattheapartmentistoopricy

（B）Sheconsidersbuyingahouse.（C）Shedoesn'thappywiththeview.

（D）Shewantsmoreroom.16.（A）Themanwillmissthelaststudygroup

（B）Themanshouldtakethestudyseriously（C）Whatthemansaidiscompletelyright.

（D）Thewomandoesn'tunderstandtheMathematicsclass.17.（A）Sheborrowedtheman'slaptoplastThursday.

（B）Theman'slaptopisbroken.（C）Shewilllendthelaptoptotheman.

（D）She'llgivethelaptopbacktothemanbynextThursday.18.（A）Themandoesn'treallywanttohelpherinthenextexperiment.

（B）Itisveryhardtofindalabpartnernowadays.（C）Itistotheman'ssurprisethatthewomanchosehimasherlabpartner.（D）Themanblamesthatthewomandidn'ttaketheexperimentseriously.Questions19to22arebasedontheconversationyouhavejustheard.19.（A）Heissosickthathecannotgotoclass.

（B）Hewantstodeliversomethingtoheroffice.（C）Hewantstoattendthemeetingwiththeprofessor.

（D）Hewantstodropacoursefromtheprofessor.20.（A）Findoutaboutacourse.

（B）Seeanadviser.

（C）Deliverapaper.

（D）Dropacourse.21.（A）Writeapaperattheendofthecourse.

（B）Giveanoralreport.（C）Takeafinalexam.

（D）Readtherelevantbooks.22.（A）Cometoherofficeafterthemeetingtoday.

（B）Takeanon-artcourse.

（C）Meetwithhertomorrow.

（D）Dosomeresearchonthecoursehimself.Questions23to25arebasedontheconversationyouhavejustheard.23.（A）Tobetterhisskiingandskatingskills.

（B）Totakeavacation.

（C）Todosomesnowsports.

（D）Tovisithisbrotheraboard.24.（A）Herbrotherlivesthere.

（B）Shereadalotofbooksaboutthere.

（C）Sheoftengoestherebecauseitisnotfarfromthecity.

（D）Shevisitedtherelastyear.25.（A）Thelowhumidity.

（B）Thechangeableweather.

（C）Thehighaltitude.

（D）Theextremetemperatures.SectionBDirections:Inthissection,youwillhear3shortpassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicemarkedA）B）C）andD）.ThenmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.注意：此部分试题请在答题卡2上作答。Questions26to28arebasedonthepassageyouhavejustheard.26.A）Peopledifferintheirbehavioralandphysicalcharacteristics

B）Humanfingerprintsprovideuniqueinformation

C）People'sbehaviorcanbeeasilydescribedinwords

D）Humanfaceshavecomplexfeatures27.A）TheancientGreekaudience

B）Themovieactors

C）Psychologists

D）ThemodernTVaudience28.A）Whyitisnecessarytoidentifypeople'spersonality

B）Whyitispossibletodescribepeople

C）Howtogettoknowpeople

D）HowtobestrecognizepeopleQuestions29to32arebasedonthepassageyouhavejustheard.29.A）Interviews

B）Column

C）Editorial

D）Specialfeatures30.A）Theyapplyreadingtechniquesskillfully

B）Theyjumpfromonenewspapertoanother

C）Theyappreciatethevarietyofanewspaper

D）Theyusuallyreadanewspaperselectively31.A）Peoplescanforthenewstheyareinterestedin

B）Differentpeoplepreferdifferentnewspapers

C）Peoplearerarelyinterestedinthesamekindofnews

D）Peoplehavedifferentviewsaboutwhatagoodnewspaperis32.A）TheImportanceofNewspaperTopicality

B）TheCharacteristicsofaGoodNewspaper

C）TheVarietyofaGoodNewspaper

D）HowdopeoplereadaNewspaperQuestions33to35arebasedonthepassageyouhavejustheard.33.A）totellusthedifferencesbetweenrobotsandmen

B）totellusthereasonwhymenneedtosleep

C）totellustheneedforrobotstosavepower

D）totellusthedangerofmenworkingatnight34.A）weareworryingaboutoursafety

B）Weareoverworked

C）Weareinatent

D）Weareawayfromhome35A）Theyneedmoretimeforrestoration

B）Theyareunlikelytobeattackers

C）Theyaremoreactivethanhorseswhentheyareawake

D）TheyspendlesstimeeatingtogetenoughenergySectionCDirections:Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblanksnumberedfrom36to43withtheexactwordsyouhavejustheard.Forblanksnumberedfrom44to46youarerequiredtofillinthemissinginformation.Fortheseblanks,youcaneitherusetheexactwordsyouhavejustheardorwritedownthemainpointsinyourownwords.Finally,whenthepassageisreadforthethirdtime,youshouldcheckwhatyouhavewritten.

注意：此部分试题请在答题卡2上作答。There'sanenergy（36）__________inAmerica,butithasnothingtodowithfossilfuels.Mostofusalreadyfeeltiredassoonastheygetupinthemorning.“Ijustcan'tgetstarted.”Peoplesay.Butit'snot（37）___________energythatmostofuslack.Sure,wecouldalluseextrasleepandabetterdiet.Butintruth,peoplearehealthiertodaythanatanytimeinhistory.Icanalmost（38）____________thatifyoulongformoreenergy,theproblemisnotwithyourbody.Whatyou'reseekingisnotphysicalenergy.It'semotionalenergy.Yet,sadtosaylifesometimesseemsdesignedtofinishoursupply.Weworktoohard.Wehavefamily（39）__________.Weencounter（40）_____________andpersonalcrises.Nowondersomanyofussufferfromemotional（41）___________,akindofutter（42）____________ofthespirit.Andyetweallknowpeoplewhoarefilledwithjoy,despitetheunpleasant（43）_________________oftheirlives.（44）_______________________________ConsiderLauraHillenbrand,whodespiteanextremelyweakbodywrotethebest-sellerSeabiscuit.Hillenbrandbarelyhadenoughphysicalenergytodragherselfoutofbetowrite.（45）___________________________________Unlikephysicalenergy,emotionalenergyisunlimitedandisirrelevanttogenesorupbringing.Sohowdoyougetit?（46）________________________________________PartIVReadingComprehension（ReadinginDepth）（25minutes）SectionADirections:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.PleasewriteyouranswersonAnswerSheet2.Questions47to51arebasedonthefollowingpassage.Chinaisinthemidstofoneofthemostremarkableexpansionsofhighereducationeverattempted.AndalthoughYunYing,aprofessorofphysicseducationatSoutheastUniversityinNanjing,maybeonlyabitplayer,she'spassionateaboutreformingscienceeducation.Yunisleadingherownminirevolution.Herintroductoryphysicscourseaddressesanationalpriority,namely,tofostereconomicgrowthbyproducingnotjustmore,butmorecreative,scientistsandengineers.Thosetwoprinciplesunderlieher“BilingualPhysicsWithMultimedia”textandCD-ROM,afreshmancourseshehasbeendevelopingsincethemid-1980sthathasbeenadoptedby10Chineseuniversities.ThecoursenotonlyteachestheEnglishthatstudentsneedtodiscussphysicsbutalsorequiresstudentstoresearchphysicstopicsandpresenttheirfindingstotheclass.That'sadramaticchangefromthememorizationdemandedintypicalintroductorysciencecourses.Yun'scoursedeviatesfromthetraditionalapproachinChineseschools,inwhichthosewhocanmemorizegetbetterscoresonteststhanthosewholearnthetextcreatively.Thetextbookcontainsstandardfreshman-levellessonsinmomentumandenergy,harmonicmotion,andwave-particleduality.AllexplanationsaregivenindepthinEnglishwithChinesetranslationsofkeypassages.TheCD-ROMincludesvideoclipsillustratingvariousprinciples.Evenmoreunusualistherequirementthatstudentsselectatopic,researchitontheirownorinasmallgroup,andthenpresenttheirfindingsinaclassseminar——allinEnglish.Otherstudentscanaskquestions,makecomments,orchallengetheconclusions——unprecedentedconductforChineseundergraduates.DespitetheuseofEnglish,Yunhasn'twatereddownthecontent.SomeofthatmaybeduetoSoutheast'srankingasoneofthecountry'stop10comprehensiveuniversities,withaparticularstrengthinengineering.Yunispleasedwiththepositivereactiontohercourse.Twoyearsago,sheofferedateacher-trainingcourseforschoolsconsideringadoptionofthetextandCD-ROM,andnowshe'sworkingonateachingandlearningguidebook.TheincreasingnumberoffacultymemberswhoweretrainedintheUnitedStatesorEuropehassparkedinterestinreformingteachingatChineseuniversities.AonesemestercoursetakenprimarilybyengineeringstudentsmayhavealimitedimpactonChineseeducation.ButforthosecallingforaneducationalrevolutioninChina,it'sagoodplacetostart.注意：此部分试题请在答题卡2上作答。47.AprofessorofSoutheastUniversity,YunYingiseagerto____________.

48.Whatisdemandedintypicalintroductorysciencecourses?49.InChinesethetraditionalapproach,whogetbetterscoresontests?50.Yunhasn'treducedthecontentpartlybecauseof_________________.51.Becauseofpositiveactiontohercourse,nowYunisengagedin_______________.SectionBDirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA）,B）,C）andD）.YoushoulddecideonthebestchoiceandmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.PassageOneQuestions52to56arebasedonthefollowingpassage.GeothermalenergyisnaturalheatfromtheinterioroftheEarththatisconvertedtoheatbuildingsandgenerateelectricity.TheideaofharnessingEarth'sinternalheatisnotnew.Asearlyas1904,geothermalpowerwasusedinItaly.Today,Earth'snaturalinternalheatisbeingusedtogenerateelectricityin21countries,includingRussia,Japan,NewZealand,Iceland,Mexico,Ethiopia,Guatemala,ElSalvador,thePhilippines,andtheUnitedStates.Totalworldwideproductionisapproaching9,000MW（equivalenttoninelargemoderncoalburningornuclearpowerplants）-doubletheamountin1980.Some40millionpeopletodayreceivetheirelectricityfromgeothermalenergyatacostcompetitivewiththatofotherenergysources.InElSalvador,geothermalenergyissupplying30%ofthetotalelectricenergyused.However,atthegloballevel,geothermalenergysupplieslessthan0.15%ofthetotalenergysupply.Geothermalenergymaybeconsideredanonrenewableenergysourcewhenratesofextractionaregreaterthanratesofnaturalreplenishment.However,geothermalenergyhasitsorigininthenaturalheatproductionwithinEarth,andonlyasmallfractionofthevasttotalresourcebaseisbeingutilizedtoday.Althoughmostgeothermalenergyproductioninvolvesthetappingofhighheatsources,peoplearealsousingthelow-temperaturegeothermalenergyofgroundwaterinsomeapplications.TheaverageheatflowfromtheinterioroftheEarthisverylow,about0.06W/m2.Thisamountistrivialcomparedwiththe177W/m2fromsolarheatatthesurfaceintheUnitedStates.However,insomeareas,heatflowissufficientlyhightobeusefulforproducingenergy.Forthemostpart,areasofhighheatflowareassociatedwithplatetectonicboundaries.Oceanicridgesystems（divergentplateboundaries）andareaswheremountainsarebeingupliftedandvolcanicislandarcsareforming（convergentplateboundaries）areareaswherethisnaturalheatflowisanomalouslyhigh.Theenvironmentalimpactofgeothermalenergymaynotbeasextensiveasthatofothersourcesofenergy,butitcanbeconsiderable.Whengeothermalenergyisdevelopedataparticularsite,environmentalproblemsincludeon-sitenoise,emissionsofgas,anddisturbanceofthelandatdrillingsites,disposalsites,roadsandpipelines,andpowerplants.Developmentofgeothermalenergydoesnotrequirelarge-scaletransportationofrawmaterialsorrefiningofchemicals,asdevelopmentoffossilfuelsdoes.Furthermore,geothermalenergydoesnotproducetheatmosphericpollutantsassociatedwithburningfossilfuelsortheradioactivewasteassociatedwithnuclearenergy.However,geothermaldevelopmentoftendoesproduceconsiderablethermalpollutionfromhotwaste-waters,whichmaybesalineorhighlycorrosive,producingdisposalandtreatmentproblems.注意：此部分试题请在答题卡2上作答。52.Inparagraph1,theauthorintroducestheconceptofgeothermalenergybyA）explainingthehistoryofthisenergysourceworldwide

B）arguingthatthisenergysourcehasbeentriedunsuccessfully

C）comparingtheproductionwiththatofotherenergysources

D）describingthealternativesforgeneratingelectricpower53.Whatistrueaboutgeothermalenergyproductionworldwide?A）Becauseitisanewidea,veryfewcountriesaredevelopinggeothermalenergysourcesB）OnlycountriesintheSouthernHemisphereareusinggeothermalenergyonalargescaleC）Untilthecostofgeothermalenergybecomescompetitive,itwillnotbeusedgloballyD）Geothermalenergyisalreadybeingusedinanumberofnations,butitisnotyeamajorsourceofpower54.Inparagraph2,theauthorstatesthatgeothermalenergyisconsideredanonrenewableresourcebecause

A）theproductionofgeothermalenergyisanaturalprocess

B）geothermalenergycomesfromtheEarth

C）wearenotusingverymuchgeothermalenergynow

D）wecouldusemoregeothermalenergythanisnaturallyreplaced55.whatisthemeaningof"Althoughmostgeothermalenergyproductioninvolvesthetappingofhighheatsources,peoplearealsousingthelow-temperaturegeothermalenergyofgroundwaterinsomeapplications"?（line4,paragraph2）A）HighheatisthesourceofmostofthegeothermalenergybutlowheatgroundwaterisalsousedsometimesB）Eventhoughlowtemperaturesarepossible,highheatisthebestresourceforenergyproductionforgroundwater.C）BothhighheatandlowheatsourcesareusedfortheproductionofgeothermalenergyfromgroundwaterD）Mosthighheatsourcesforgeothermalenergyaretappedfromapplicationsthatinvolvelowheatingroundwater56.Inparagraph4,theauthormentionstheatmosphericpollutionandwasteproductsforfossilfuelandnuclearpowerA）tointroducethediscussionofpollutioncausedbygeothermalenergydevelopmentandproductionB）tocontrastpollutioncausedbyfossilfuelsandnuclearpowerwithpollutioncausedbygeothermalenergyC）toarguethatgeothermalproductiondoesnotcausepollutionlikeothersourcesofenergydoD）todiscouragetheuseofrawmaterialsandchemicalsintheproductionofenergybecauseofpollutionPassageTwoQuestions57to61arebasedonthefollowingpassage.Despitesocialmythstothecontrary,thebestpredictoroffuturewealthisthefamilyintowhichyouareborn.Eachyear,thebusinessmagazineForbespublishesalistofthe“Forbes400”—thefourhundredwealthiestfamiliesandindividualsinthecountry.OfallthewealthrepresentedontheForbes400list,morethanhalfisinherited.Thoseonthelistwhocouldbecalled“self-made”werenottypicallyofmodestorigins;mostinheritedsignificantassets（Forbes,1997;SklarandCollins,1997）.Thoseintheupperclasswithnewlyacquiredwealthareknownasthenouveauriche.Althoughtheymayhavevastamountsofmoney,theyareoftennotacceptedinto“oldrich”circles.Theuppermiddleclassincludesthosewithhighincomesandhighsocialprestige.Theytendtobewell-educatedprofessionalsorbusinessexecutives.Theirearningscanbequitehighindeed—successfulbusinessexecutivescanearnmillionsofdollarsayear.Itisdifficulttoestimateexactlyhowmanypeoplefallintothisgroupbecauseofthedifficultyofdrawinglinesbetweentheupper,uppermiddle,andmiddleclass.Indeed,theuppermiddleclassisoftenthoughtofas“middleclass”becausetheirlifestylesetsthestandardtowhichmanyaspire,butthislifestyleissimplybeyondthemeansofamajorityofpeopleintheUnitedStates.Themiddleclassishardtodefine;inpart,being“middleclass”ismorethanjusteconomicposition.Byfarth