大学英语六级考试试题及参考答案.docx

大学英语六级考试试题及参考答案.docx

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大学英语六级考试试题及参考答案

2007年12月大学英语六级考试试题及参考答案

PartI Writing （30minutes）

Thedigitalage

1.如今，数字化产品越来越多，如…

2.使用数字化产品对于人们学习工作和生活的影响。

PartIIReadingComprehension（SkimmingandScanning）（15minutes）

              SevenwaytoSavetheWorld

  Forgettheoldideathatconservingenergyisaformofself-denial—ridingbicycles,dimmingthelights,andtakingfewershowers.Thesedaysconservationisallaboutefficiency:

gettingthesame—orbetter—resultsfromjustafractionoftheenergy.WhenaslumpinbusinesstravelforcedUlrichRamertocutcostsathisfamily—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,isexpectedtotalkaboutenergyconservationinhisStateoftheUnionspeechthisweek.

Thegoodnewsisthattheworldisfullofproven,cheapwaystosaveenergy.Herearetheseventhatcouldhavethebiggestimpact.

Insulate

Spaceheatingandcoolingeatsup36percentofalltheworld’senergy.There’svirtuallynolimittohowmuchofthatcanbesaved,asprototype“zero-energyhomes”inSwitzerlandandGermanyhaveshown.There’sbeenasurgeinnewwaysofkeepingheatinandcoldout（orviceversa）.Themostadvancedinsulationfollowsthelawofincreasingreturns:

ifyouaddenoughyoucanscaledownoreveneliminateheatingandair-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,thesystemcanbereversedtocoolbuildingsaswell.

MostnewresidentialbuildingsinSwedenarealreadyheatedwithground-sourceheatpumps.Suchsystemsconsumealmostnoconventionalfuelatall.Severalcountrieshaveusedsubsidiestojump-startthemarket,includingJapan,wherealmostImillionheatpumpshavebeeninstalledinthepasttwoyearstoheatwaterforshowersandhottubs.

RemakeFactories

  Fromsteelmillstopaperfactories,industryeatsupaboutathirdoftheworld’senergy.Theopportunitiestosavearevast.InLudwigshafen,GermanchemicalsgiantBASFrunsaninterconnectedcomplexofmorethan200chemicalfactories,whereheatproducedbyonechemicalprocessisusedtopowerthenext.AttheLudwigshafensitesitealone,suchrecyclingofheatandenergysavesthecompany￡200millionayearandalmosthalfitsCO2emissions.NowBASFisdoingthesamefornewplantsinChina.“Optimizing（优化）energyefficiencyisadecisivecompetitiveadvantage,”saysBASFCEOJurgenHambrecht.

GreenDriving

Aquarteroftheworld’senergy---includingtwothirdsoftheannualproductionofoil—isusedfortransportation.Somesavingscomefreeofcharge:

youcanboostfuelefficiencyby6percentsimplybykeepingyourcar’stiresproperlyinflated（充气）.Gasoline-electrichybrid（混合型的）modelsliketheToyotaPriusimprovemileagebyafurther20percentoverconventionalmodels.

ABetterFridge

Morethanhalfofallresidentialpowergoesintorunninghouseholdappliances,producingafifthoftheworld’scarbonemissions.Andthat’strueeventhoughmanufacturershavealreadyhikedtheefficiencyofrefrigeratorsandotherwhitegoodsbyasmuchas70percentsincethe1980s.AccordingtoanInternationalEnergyAgencystudy,ifconsumerschosethosemodelsthatwouldsavethemthemostmoneyoverthelifeoftheappliance,they’dcutglobalresidentialpowerconsumption（andtheirutilitybills）by43percent.

FlexiblePayment

Whosaysyouhavetopayforallyourconservationinvestments?

“Energyservicecontractors”willpayforretrofitting（翻新改造）inreturnforashareoftheclient’sannualutility-billsavings.InBeijing.ShenwuThermalEnergyTechnologyCo.specializesinretrofittingChina’ssteelfurnaces.Shenwuputsuptheinitialinvestmenttoinstallaheatexchangerthatpreheatstheairgoingintothefurnace,slashingtheclient’sfuelcosts.Shenwupocketsacutofthosesavings,sobothShenwuandtheclientprofit.

Ifsavingenergyissoeasyandprofitable,whyisn’teveryonedoingit?

Ithasdowithpsychologyandalackofinformation.Mostofustendtolookattoday’spricetagmorethantomorrow’spotentialsaving.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.Whatissaidtobebestwaytoconserveenergynowadays?

  A）Raisingefficiency.             B）Cuttingunnecessarycosts..

  C）Findingalternativeresources.        D）Sacrificingsomepersonalcomforts.

2.WhatdoestheEuropeanUnionplantodo?

  A）Diversifyenergysupply.          B）Cutenergyconsumption.

  C）Reducecarbonemissions.          D）RaiseproductionRaiseproductionefficiency.

3.Ifyouaddenoughinsulationtoyourhouse,youmaybeableto_____________.

  A）improveyourworkenvironment       B）cutyourutilitybillsbyhalf 

  C）getridofair-conditioners          D）enjoymuchbetterhealth

4.Howmuchofthepowerconsumedbyincandescentbulbsisconvertedintolight?

  A）Asmallportion.    B）Some40percent.    C）Almosthalf.    D）75to80percent.

5.Somecountrieshavetriedtojump-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.Manyenvironmentalistsmaintaintheviewthatconservationhasmuchtodowith_____.

10.Thestrongestincentivesforenergyconservationwillderivefrom__________.

PartIIIListeningComprehension （35minutes）

SectionA

11.A）Proceedinhisownway.           B）Sticktotheoriginalplan.

  C）Compromisewithhiscolleague.        D）Trytochangehiscolleague’smind.

12.A）Maryhasakeeneyeforstyle.         B）Nancyregretsbuyingthedress.

  C）NancyandMarywentshoppingtogetherinRome. D）Na