资源描述：
《华中师范大学2007年考博英语真题.doc》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、2007年试题PartⅠReadingComprehension(40%)Directions:Thereare4readingpassagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandthenwritethecorrespondingletterontheAnswerSheet.Q
2、uestions1to5arebasedonthefollowingpassage:Nothingbetterillustratestheboradeningoftheconcernaboutpollutionfromalocalaffairtoaglobalonethanairpollution.Localairpollutionisimprovinginsomecitiesinindustrialcountries,butitisworseninginothers,principallyindevelopingcountries,andish
3、ardlysolvedanywhere.Meanwhile,globaluseoffossilfuelsandemissionsoftraditionalpollutantssuchassulfurandnitrogenoxidesthatresultfromitcontiunetoclimb.Acidrain,ozone,andotherconsequencesofthesepollutantsareaffectingplantandanimallife---killingforestandfish,damagingcrops,changing
4、thespeciescompositionofecosystem---overvastareasoftheglobe.Depletionofthestratosphere'sozonelayerisamatterofsuchconcernthataninternationaltreatyhasbeennegotiatedtoreduceemissionsofchlorofluorcarbons,butthelatestmeasurementsindicatethecurrentprotocolisalreadyinadequate.Andprob
5、ablymostseriousofall,thebuildupofinfrared-trapping“greenhouse”gasesintheatmospherecontiunes.ThisbuildupislargerlyaconscquenceoftheuseoffossilfuelsandCFCs,deforestation,andvariousagriculturalactivities,anditnowthreatenssocietieswithfar-reachingclimatechange.Whiletheregionalimp
6、actsofglobalwarmingareuncertainanddifficulttopredict,rainfallandmonsoonpatternscouldshift,upsettingagriculturalactivitiesworldwide.Thesealevelcouldrise,floodingcoastalareas.Oceancurrentscouldshift,alteringtheclimateofmanyareasanddisruptingfisheries.Therangesofplantandanimalsp
7、eciescouldchangeregionally,endangeringprotectedareasandmanyspecieswhosehabitatsarenowfewandconfined.Recordheatwavesandotherweatheranomaliescouldharmsusceptiblepeople,crops,andforests.Theseinterrelatedatmosphericissuesprobablyconstitutethemostseriouspollutionthreatinhistory.Is
8、ay"interrelated"becausetheseatmosphericissuesarelinkedinwaysthatscie
