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Globalwarmingmayormaynotbethegreatenvironmentalcrisisofthe21stcentury,but—regardlessofwhetheritisorisn’t—wewon’tdomuchaboutit.Wewillargueoveritandmayeven,asanation,makesomefairlysolemn-soundin
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Globalwarmingmayormaynotbethegreatenvironmentalcrisisofthe21stcentury,but—regardlessofwhetheritisorisn’t—wewon’tdomuchaboutit.Wewillargueoveritandmayeven,asanation,makesomefairlysolemn-soundingcommitments(承诺)toavoidit.Butthemoredramaticandmeaningfulthesecommitmentsseem,thelesslikelytheyaretobeobserved.

AlGorecallsglobalwarmingan“inconvenienttruth,”asifmerelyrecognizingitcouldputusapathtoasolution.Buttherealtruthisthatwedon’tknowenoughtorelieveglobalwarming,and—withoutmajortechnologicalbreakthroughs—wecan’tdomuchaboutit.

From2003to2050,theworld’spopulationisprojectedtogrowfrom6.4billionto9.1billion,a42%increase.Ifenergyuseperpersonandtechnologyremainthesame,totalenergyuseandgreenhousegasemissions(排放)(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.Onlyanaggressiveresearchanddevelopmentprogrammightfindwaysofbreakingourdependenceonfossilfuelsordealingwithit.

Thetroublewiththeglobalwarmingdebateisthatithasbecomeamoralproblemwhenit’sreallyanengineeringone.Theinconvenienttruthisthatifwedon’tsolvetheengineeringproblem,we’rehelpless.

46.Whatissaidaboutglobalwarminginthefirstparagraph?

A.Itmaynotproveanenvironmentalcrisisatall.

B.Itisanissuerequiringworldwidecommitments.

C.Seriousstepshavebeentake

刘玉燕回答:
  小题1:D小题2:C小题3:B小题4:B小题5:B            
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