英语四级阅读题库含答案解析Word格式文档下载.docx
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英语四级阅读题库含答案解析Word格式文档下载.docx
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From2003to2050,theworld’spopulationisprojectedtogrowfrom6.4billionto9.1billion,a42%increase.Ifenergyuseperpersonandtechnologyremainthesame,totalenergyuseandgreenhousegasemissions(mainly,CO2)willbe42%higherin2050.butthat’stoolow,becausesocietiesthatgrowricherusemoreenergy.Weneedeconomicgrowthunlesswecondemntheworld’spoortotheirpresentpovertyandfreezeeveryoneelse‘slivingstandards.Withmodestgrowth,energyuseandgreenhouseemissionsmorethandoubleby2050.
Nogovernmentwilladoptrigidrestrictionsoneconomicgrowthandpersonalfreedom(limitsonelectricityusage,drivingandtravel)thatmightcutbackglobalwarming.Still,politicianswanttoshowthey’re“doingsomething.”ConsidertheKyotoProtocol(京都议定书).Itallowedcountriesthatjoinedtopunishthosethatdidn’t.Butithasn’treducedCO2emissions(upabout25%since1990),andmanysignatories(签字国)didn’tadopttoughenoughpoliciestohittheir2008-2012targets.
Thepracticalconclusionisthatifglobalwarmingisapotentialdisaster,theonlysolutionisnewtechnology.Onlyanaggressiveresearchanddevelopmentprogrammightfindwaysofbreakingdependenceonfossilfuelsordealingwithit.
Thetroublewiththeglobalwarmingdebateisthatithasbecomeamoralproblemwhenit’sreallyanengineeringone.Theinconvenienttruthisthatifwedon’tsolvetheengineeringproblem,we’rehelpless.
57.Whatissaidaboutglobalwarminginthefirstparagraph?
A)Itmaynotproveanenvironmentalcrisisatall.
B)Itisanissuerequiringworldwidecommitments.
C)Seriousstepshavebeentakentoavoidorstopit.
D)Verylittlewillbedonetobringitundercontrol.
58.Accordingtotheauthor’sunderstanding,whatisAlGore’sviewonglobalwarming?
A)Itisarealitybothpeopleandpoliticiansareunawareof.
B)Itisaphenomenonthatcausesusmanyinconveniences.
C)Itisaproblemthatcanbesolvedonceitisrecognized.
D)Itisanareaweactuallyhavelittleknowledgeabout.
59.Greenhouseemissionswillmorethandoubleby2050becauseof_______.
A)economicgrowth
B)thewideninggapbetweentherichandpoor
C)wastefuluseofenergy
D)therapidadvancesofscienceandtechnology
60.Theauthorbelievesthat,sincethesigningoftheKyotoProtocol,________.
A)politicianshavestartedtodosomethingtobetterthesituation
B)fewnationshaveadoptedrealtoughmeasurestolimitenergyuse
C)reductionsinenergyconsumptionhavegreatlycutbackglobalwarming
D)internationalcooperationhascontributedtosolvingenvironmentalproblems
61.Whatisthemessagetheauthorintendstoconvey?
A)Globalwarmingismoreofamoralissuethanapracticalone.
B)Theultimatesolutiontoglobalwarmingliesinnewtechnology
C)Thedebateoverglobalwarmingwillleadtotechnologicalbreakthroughs.
D)Peoplehavetogiveupcertainmaterialcomfortstostopglobalwarming.
PassageTwo
Somedayastrangerwillreadyoure-mailwithoutyourpermissionorscantheWebsitesyou’vevisited.Orperhapssomeonewillcasuallyglancethroughyourcreditcardpurchaseorcellphonebillstofindoutyourshoppingpreferencesorcallinghabits.
Infact,it’slikelysomeofthesethingshavealreadyhappenedtoyou.Whowouldwatchyouwithoutyourpermission?
Itmightbeaspouse,agirlfriend,amarketingcompany,aboss,acoporacriminal.Whoeveritis,theywillseeyouinawayyouneverintendedtobeseen—the21stcenturyequivalentofbeingcaughtnaked.
Psychologiststellusboundariesarehealthy,thatit’simportanttorevealyourselftofriends,familyandloversinstages,atappropriatetimes.Butfewboundariesremain.Thedigitalbreadcrumbs(碎屑)youleaveeverywheremakeiteasyforstrangerstoreconstructwhoyouare,whereyouareandwhatyoulike.Insomecases,asimpleGooglesearchcanrevealwhatyouthink.Likeitornot,increasinglyweliveinaworldwhereyousimplecannotkeepasecret.
Thekeyquestionis:
Doesthatmatter?
WhenopinionpollsaskAmericansaboutprivacy,mostsaytheyareconcernedaboutlosingit.Asurveyfoundanoverwhelmingpessimismaboutprivacy,with60percentofrespondentssayingthey
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