六级真题试题word版.docx
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六级真题试题word版.docx
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六级真题试题word版
2007年12月大学英语六级考试真题
PartIWriting(30minutes)
Directions:
Forthispart,youareallowed30minutestowriteashortessayentitledDigitalAge.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow.
1.如今数字化产品得到越来越广泛的使用,并举例
2.数字化产品的使用对人工作,学习,生活产生的影响
DigitalAge
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
PartIIReadingComprehension(SkimmingandScanning)(15minutes)
Directions:
Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.
Forquestions1-7,choosethebestanswerfromthefourchoicesmarked[A],[B],[C]and[D].
Forquestions8-10,completethesentenceswiththeinformationgiveninthepassage.
SevenWaystoSavetheWorld
Forgettheoldideathatconservingenergyisaformofself-denial—ridingbicycles,dimmingthelights,andtakingfewershowers.Thesedaysconservationisallaboutefficiency:
gettingthesame—orbetter—resultsfromjustafractionoftheenergy.WhenaslumpinbusinesstravelforcedUlrichRǒmertocutcostcostsathisfamily-ownedhotelinGermany,hereplacedhundredsofthehotel’swastefullightbulbs,gettingthesamelightfor80percentlesspower.Heboughtanewwaterboilerwithadigitallycontrolledpump,andwrappedinsulationaroundthepipes.Spendingabout€100,000ontheseandotherimprovements,heslashedhis€90,000fuelandpowerbillby€60,000.Asabonus,thehotel’slowerenergyneedshavereduceditsannualcarbonemissionsbymorethan200metrictons.“Forus,savingenergyhasbeenvery,veryprofitable,”hesays.“Andmostimportantly,we’renotgivingupasinglecomfortforourguests.”
Efficiencyisalsoagreatwaytolowercarbonemissionsandhelpslowglobalwarming.Butthebestargumentforefficiencyisitscost—or,moreprecisely,itsprofitability.That’sbecausequicklygrowingenergydemandrequiresimmenseinvestmentinnewsupply,nottomentionthedrainofrisingenergyprices.
Nowonderefficiencyhasmovedtothetopofthepoliticalagenda.OnJan.10,theEuropeanUnionunveiledaplantocutenergyuseacrossthecontinentby20percentby2020.LastMarch,Chinaimposeda20percentincreaseinenergyefficiencyby2020.EvenGeorgeW.Bush,theTexasoilman,isexpectedtotalkaboutenergyconversationinhisStateoftheUnionspeechthisweek.
Thegoodnewsisthattheworldisfullofproven,cheapwaystosaveenergy.Herearetheseventhatcouldhavethebiggestimpact:
Insulate
Spaceheatingandcoolingeatsup36percentofalltheworld’senergy.There’svirtuallynolimittohowmuchofthatcanbesaved,asprototype“zero-energyhomes”inSwitzerlandandGermanyhaveshown.There’sbeenasurgeinnewwaysofkeepingheatinandcoldout(orviceversa).Themostadvancedinsulationfollowsthelawofincreasingreturns:
ifyouaddenough,youcanscaledownoreveneliminateheatingandair-conditioningequipment,loweringcostsevenbeforeyoustartsavingonutilitybills.Studieshaveshownthatgreenworkplaces(onesthatdon’tconstantlyneedtohavetheheatorair-conditionerrunning)havehigherworkerproductivityandlowersickrates.
ChangeBulbs
Lightingeatsup20percentoftheworld’selectricity,ortheequivalentofroughly600,000tonsofcoaladay.Fortypercentofthatpowersold-fashionedincandescentlightbulbs—a19th-centurytechnologythatwastesmostofthepoweritconsumesonunwantedheat.
Compactfluorescentlamps,orCFLs,notonlyuse75to80percentlesselectricitythanincandescentbulbstogeneratethesameamountoflight,buttheyalsolast10timeslonger.Phasingoldbulbsoutby2030wouldsavetheoutputof650powerplantsandavoidthereleaseof700milliontonsofcarbonintotheatmosphereeachyear.
ComfortZone
Waterboilers,spaceheatersandairconditionershavebeennotoriouslyinefficient.Theheatpumphasalteredthatequation.Itremovesheatfromtheairoutsideorthegroundbelowandusesittosupplyheattoabuildingoritswatersupply.Inthesummer,thesystemcanbereversedtocoolbuildingaswell.
MostnewresidentialbuildingsinSwedenarealreadyheatedwithground-sourceheatpumps.Suchsystemsconsumealmostnoconventionalfuelatall.Severalcountrieshaveusedsubsidiestojump-startthemarket,includingJapan,wherealmost1millionheatpumpshavebeeninstalledinthepasttwoyearstoheatwaterforshowersandhottubs.
RemakeFactories
Fromsteelmillstopaperfactories,industryeatsupaboutathirdoftheworld’senergy.Theopportunitiestosavearevast.InLudwigshafen,GermanchemicalsgiantBASFrunsaninterconnectedcomplexofmorethan200chemicalfactories,whereheatproducedbyonechemicalprocessisusedtopowerthenext.AttheLudwigshafensitealone,suchrecyclingofheatandenergysavesthecompany€200millionayearandalmosthalfitsCO2emissions.NowBASFisdoingthesamefornewplantsinChina.“Optimizing(优化)energyefficiencyisadecisivecompetitiveadvantage,”saysBASFCEOJǔrgenHambrecht.
GreenDriving
Aquarteroftheworld’senergy—includingtwothirdsoftheannualproductionofoil—isusedfortransportation.Somesavingscomefreeofcharge:
youcanboostfuelefficiencyby6percentsimplybykeepingyourcar’stiresproperlyinflated(充气).Gasoline-electrichybrid(混合型)modelsliketheToyotaPriusimprovemileagebyafurther20percentoverconventionalmodels.
ABetterFridge
Morethanhalfofallresidentialpowergoesintorunninghouseholdappliances,producingafifthoftheworld’scarbonemissions.Andthat’strueeventhoughmanufacturershavealreadyhikedtheefficiencyofrefrigeratorsandotherwhitegoodsbyasmuchas70percentsincethe1980s.AccordingtoanInternationalEnergyAgencystudy,ifconsumerschosethosemodelsthatwouldsavethemthemostmoneyoverthelifeoftheappliance,they’dcutglobalresidentialpowerconsumptionandtheirutilitybillsby43percent.
FlexiblePayment
Whosaysyouhavetopayforallyourconservationinvestment?
“Energyservicecontractors”willpayforretrofitting(翻折改造)inreturnforashareoftheclient’sannualutility-billsavings.InBeijing,ShenwuThermalEnergyTechnologyCo.specializesinretrofittingChina’ssteelfurnaces.Shenwuputsuptheinitialinvestmenttoinstallaheatexchangerthatpreheatstheairgoingintothefurnace,slashingtheclient’sfuelcosts.Shenwupocketsacutofthosesavings,sobothShenwuandtheclientprofit.
Ifsavingenergyissoeasyandprofitable,whyisn’teveryonedoingit?
Ithastodowithpsychologyandalackofinformation.Mostofustendtolookattoday’spricetagmorethantomorrow’spotentialsavings.Thatholdsdoubleforthelandlordordeveloper,whowon’tactuallyseeapennyofthesavingshisinvestmentinbetterinsulationorabetterheatingsystemmightgenerate.Inmanypeople’sminds,conservationisstillassociatedwithself-denial.Manyenvironmentalistsstillpushthatview.
Smartgovernmentscanhelppushthemarketintherightdirection.TheEU’s1994lawonlabelingwassuchasuccessthatitextendedthesameideatoentirebuildingslastyear.Toboostthemarketvalueofefficiency,allnewbuildingsarerequiredtohavean“energypass”detailingpowerandheatingconsumption.CountrieslikeJapanandGermanyhavesuccessivelytightenedbuildingcodes,requiringanincreaseininsulationlevelsbutleavingituptobuilderstodecidehowtomeetthem.
Themostpowerfulincentives,ofcourse,willcomefromthemarketitself.Overthepastyear,sky-highfuelpriceshavefocusedmindsonefficiencylikeneverbefore.Ever-increasingpressuretocutcostshasfinallyforcedmorecompaniestodosomemathontheirenergyuse.
Willitbeenough?
Withglobaldemandandemissionsrisingsofast,wemaynothaveanychoicebuttotry.Efficienttechnologyisherenow,provenandcheap.Comparedwithallotheroptions,it’sthebiggest,easiestandmostprofitablebangforthebuck.
1.Whatissaidtobethebestwaytoconserveenergynowadays?
[A]Raisingefficiently.[B]Cuttingunnecessarycosts.
[C]Findingalternativeresources[D]Sacrificingsomepersonalcomforts.
2.WhatdoestheEuropeanUnionplantodo?
[A]Diversifyenergysupply.[B]Cutenergyconsumption.
[C]Reducecarbonemissions.[D]Raiseproductionefficiency.
3.Ifyouaddenoughinsulationtoyourhouse,youmaybeableto_______.
[A]improveyourworkenvironment[B]cutyourutilitybillsbyhalf.
[C]getridofair-conditioners[D]enjoymuchbetterhealth
4.Howmuchofthepowerconsumedbyincandescentbulbsisconvertedintolight?
[A]Asmallportion.[B]Some40percent
[C]Almosthalf.[D]75to80percent.
5.Somecountrieshavetiredtojump-startthemarketofheatpumpsby_________.
[A]upgradingtheequipment[B]encouraginginvestments
[C]implementinghigh-tech[D]providingsubsidies
6.GermanchemicalsgiantBASFsaves€200millionayearby_________.
[A]recyclingheatandenergy[B]settingupfactoriesinChina
[C]usingthenewesttechnology[D]reducingtheCO2emissionsofitsplants
7.Globalresidentialpowerconsumptioncanbecutby43percentif________.
[A]weincreasetheinsulationofwallsandwaterpipes
[B]wechoosesimplermodelsofelectricalappliances
[C]wecutdownontheuseofrefrigeratorsandotherwhitegoods
[D]wechoosethemostefficientmodelsofrefrigeratorsandotherwhitegoods
8.Energyservicecontractorsprofitbytakingapartofclients’__________.
9.Manyenvironmentalistsmaintaintheviewthatconser
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