大学英语四级真题及答案精编版Word文档格式.docx

大学英语四级真题及答案精编版Word文档格式.docx

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SectionA

Questions36to45arebasedonthefollowingpassage.

Globalwarmingisatrendtowardwarmerconditionsaroundtheworld.Partofthewarmingisnatural;

wehaveexperienceda20,000-year-longwarmingasthelasticeageendedandtheice__36___away,However,wehavealreadyreachedtemperaturesthatarein__37__withotherminimum-iceperiods,socontinuedwarmingislikelynotnatural.Weare__38__toapredictedworldwideinincreaseintemperatures__39__betweem1℃and6℃overthenext100years.Thewarmingwillbemore__40__insomeareas,lessinother,andsomeplacesmayevencooloff.Likewise,the__41__ofthiswarmingwillbeverydifferentdependingonwhereyouare-coastalareasmustworryaboutrisingsealevels,whileSiberiaandnorthernCanadamaybecomemorehabitable（宜居的）and__42__forhumansthantheseareasarenow.

Thefactremains,however,thatitwilllikelygetwarmer,on__43__,everywhere.Scientistsareingeneralagreementthatthewarmerconditionswehavebeenexperiencingareatleastinparttheresultofahuman-inducedglobalwarmingtrend.Somescientists___44__thatthechanges 

weareseeingfallwithintherangeofrandom（无规律的）variation-someyearsarecold,otherswarm,andwehavejusthadanunremarkablestringofwarmyears__45___--butthatisbecominganincreasinglyrareinterpretationinthefaceofcontinuedandincreasingwarmconditions.

A）appealing 

B）average 

C）contributing 

D）dramatic

E）frequentlyF）impactG）line 

H）maintain

I）meltedJ）persistK）rangingL）recently

M）resolvedN）sensibleO）shock

SectionB

TheEndoftheBook?

[A]Amazon,byfarthelargestbooksellerinthecountry,reportedonMay19thatitisnowsellingmorebooksinitselectronicKindleformatthanintheoldpaper-and-inkformat.Thatisremarkable,consideringthattheKindlehasonlybeenaroundforfouryears.E-booksnowaccountfor14percentofallbooksalesinthecountryandareincreasingfarfasterthanoverallbooksales.E-booksalesareup146percentoverlastyear,whilehardbacksalesincreased6percentandpaperbacksdecreased8percent.

[B]Doesthisspellthedoomofthephysicalbook?

Certainlynotimmediately,andperhapsnotatall.WhatitdoesmeanisthatthebookbusinesswillgothroughatransformationinthenextdecadeorsomoreprofoundthananyithasseensinceGutenbergintroducedprintingfrommoveabletypeinthe1450s.

[C]Physicalbookswillsurelybecomemuchrarerinthemarketplace.Massmarketpaperbacks,whichhavebeendecliningforyearsanyway,willprobablydisappear,aswillhardbacksformysteries,thrillers,“romancefiction,”etc.Suchbooks,whichonlyrarelyendupinpermanentcollections,eitherprivateorpublic,willprobablyonlybeavailablease-bookswithinafewyears.Hardbackandtradepaperbacksfor“serious”nonfictionandfictionwillsurelylastlonger.Perhapsitwillbecomethemarkofanauthortoreckonwiththatheorsheisstillpublishedinhardcopy.

[D]Asforchildren’sbooks,whoknows?

Children’sbooksarelikedogfoodinthatthepurchasersarenottheconsumers,sothemarket（andthemarketing）isinherentlystrange.

[E]Forcluestothebook’sfuture,let’slookatsomeexamplesoftechnologicalchangeandseewhathappenedtotheoldtechnology.

[F]Onetechnologyreplacesanotheronlybecausethenewtechnologyisbetter,cheaper,orboth.Thegreaterthedifference,thesoonerandmorethoroughlythenewtechnologyreplacestheold.Printingwithmoveabletypeonpaperdramaticallyreducedthecostofproducingabookcomparedwiththeold-fashionedoneshandwrittenonvellum,whichcomesfromsheepskin.ABible—tobesure,alongbook—requiredvellummadefrom300sheepskinsandcountlessman-hoursoflabor.Beforeprintingarrived,aBiblecostmorethanamiddle-classhouse.Therewereperhaps50,000booksinallofEuropein1450.By1500therewere10million.

[G]Butwhileprintingquicklycausedthehandwrittenbooktodieout,handwritinglingeredon（继续存在）wellintothe16thcentury.Veryspecialbooksarestilloccasionallyproducedonvellum,buttheyareone-of-a-kindshowpieces.

[H]Sometimesanewtechnologydoesn’tdrivetheoldoneout,butonlypartsofitwhileforcingtheresttoevolve.Themovieswerewidelypredictedtodrivelivetheateroutofthemarketplace,buttheydidn’t,becausetheaterturnedouttohavequalitiesmoviescouldnotreproduce.Equally,TVwassupposedtoreplacemoviesbut,again,didnot.

[I]Moviesdid,however,fatallyimpactsomepartsoflivetheater.AndwhileTVdidn’tkillmovies,itdidkillsecond-ratepictures,shorts,andcartoons.

[J]NordidTVkillradio.Comedyanddramashows（“JackBenny,”“AmosandAndy,”“TheShadow”）allmigratedtotelevision.Butbecauseyoucan’tdriveacarandwatchtelevisionat