新郑市2014高考英语阅读理解、完形填空类训练（2）及答案阅读理解AgainstthesuppositionthanforestfiresinAlaska,CanadaandSiberiawarmtheclimate,scientistshavediscoveredthatcoolingmayoccurinareaswhereburnttreesallowmoresnowtomirrormoresunlightintospace.Thisfindingsuggeststhattakingstepstopreventnorthernforesttolimitthereleaseofgreenhousegasesmaywarmtheclimateinnorthernregions.Usuallylargefiresdestroyedforestsintheseareasoverthepastdecade.Scientistspredictthatwithclimatewarming,firesmayoccurmorefrequentlyovernextseveralcenturiesasresultofalongerfireseason.Sunlighttakeninbytheearthtendstocausewarming,whileheatmirroredbackintospacetendstocausecooling.Thisisthefirststudytoanalyzeallaspectsofhownorthernfiresinfluenceclimate.Earlierstudiesbyotherscientistshavesuggestedthatfireinnorthernregionsspeedupclimatewarmingbecausegreenhousegasesfromburningtreesandplantsarereleasedintotheatmosphereandthustrapheat.Scientistsfoundthatrightafterthefire,largeamountsofgreenhousegasesenteredtheatmosphereandcausedwarming.Ozone（臭氧）levelsincreased,andashfromthefirefellonfar-offseaice,darkeningthesurfaceandcausingmoreradiationfromthesuntobetakenin.Thefollowingspring,however,thelandwithintheareaofthefirewasbrighterthanbeforethefire,becausefewertreescoveredtheground.Snowonthegroundmirroredmoresunlightbackintospace,leadingtocooling.“Weneedtofindoutallpossiblewaystoreducethegrowthofgreenhousegasesintheatmosphere.”Scientiststrackedthechangeinamountofradiationenteringandleavingtheclimatesystemasaresultofthefire,andfoundameasurementcloselyrelatedtotheglobalairtemperature.Typically,fireinnorthernregionsoccursinthesameareaevery80to150years.Scientists,however,foundthatwhenfireoccursmorefrequently,moreradiationislostfromtheearthandcoolingresults.Specifically,theydeterminedwhenfirereturns20yearsearlierthanpredicated,0.5wattspersquaremeterofareaburnedaresoakedupbytheearthfromgreenhousegases,but0.9wattspersquaremeterwillbesentbackintospace.Theneteffectiscooling.Wattsareusedtomeasuretherateatwhichenergyisgainedorlostfromtheearth.1.Accordingtothenewfindings,takingstepstopreventnorthernforestfiresmay_______.A.resultinawarmingclimateB.causetheforestfirestooccurmorefrequentlyC.leadtoalongerfireseasonD.protecttheforestsandtheenvironmentthere【答案与解析】A根据第二段第一句Thisfindingsuggests……可知2.ThefollowingarealltheimmediateeffectsafteraforestfireEXCEPT_________.A.largeamountsofgreenhousegasesentertheatmosphereB.thelevelsofozonewhichisatypeofoxygenincreaseC.snowonthegroundmirrorsmoresunlightbackintospaceD.ashesfromthefirefallontheicesurfaceandtakeinmoreradiationfromthesun【答案与解析】C根据第四段可知3.Earlierstudiesaboutnorthernforestfires_________.A.analyzeallaspectsofhownorthernfiresinfluenceclimateB.indicatethatforestfireswillpollutetheatmosphereC.suggestthatpeopleshouldtakemeasurestoprotectenvironmentD.suggestthatthefireswillspeedupclimatewarming【答案与解析】D根据第三段可知4.Theunderlinedphrase“soakup”inthelastparagraphmostprobablymeans________.A.releasedB.absorbedC.createdD.distributed【答案与解析】B根据……but0.9wattspersquaremeterwillbesentbackintospace可知soakup与sentback的意思相反5.FromthepassagewecandrawaconclusionthatforestfiresinAlaska,CanadaandSiberiamay__________.A.warmtheclimateasthesuppositiongoesB.allowmoresnowtoreflectmoresunlightintospaceandthuscooltheclimateC.destroylargeareasofforestsandpo...
