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1、实用文档Unit8FocusonGlobalWarmingTextcomprehensionI.AII.1.T; 2.T; 3.F; 4.F; 5.F.III.1.Paragraph2.Becauseglobalwarmingmaybethesinglelargestthreattoourplanet（theearth）.Low-lyingnationscouldbeawashinseawater,rainanddroughtpatternsacrosstheworldcouldchang
2、e,hurricanescouldbecomemorefrequent,andElNinoscouldbecomemoreintense. 2.Paragraph3.Ourfactories,powerplants,andcarsburncoalandgasolineandspitoutcarbondioxide,producemethanebyallowingourtrashtodecomposeinlandfillsandbybreedinglargeherdsofmethane-belchi
3、ngcattle,andreleasenitrogenoxidebyusingnitrogen-basedfertilizers. 3.Paragraph4.Theincreasedconcentrationsofgreenhousegases prevent additionalthermalradiation from leavingtheEarth,socausetheglobalwarming. 4.Paragraph7.Aslightincrease in heatandrainineq
4、uatorialregionswouldincreasevector-borne带菌媒介引起的diseasessuchasmalaria;moreintenserainsandhurricanescouldcausemoreseverefloodingandmoredeathsincoastalregionsandalongriverbeds;evenamoderateriseinsealevelcouldthreatenthe low-lyingislands;hottersummerscoul
5、dleadto morecasesofheatstroke,hospitaladmissionsanddeathsamongvulnerablepeoplewithheartproblemsorrespiratoryproblems. 5.Paragraph8and10.Wecan curb ourconsumptionoffossilfuelsandusetechnologiestoreducetheemissionofheat-trappinggaseslike carbon二氧化碳 diox
6、ide,methane,and nitrousoxides,andprotecttheforestsintheworld,andwecanalsoadvocatepoliciesthatwillcombatglobalwarmingoverthelongterm,thingslikecleancars, environmentallyresponsible renewableenergytechnologies,andstoppingthe clear-cutting ofvaluablefore
7、sts. IV.1.GlobalwarmingwillprobablybethemostseriousthreattoourEarth,ifwedonottakeintoaccountofsomeotherpossibledisasters,suchasanotherworldwar,collisionofourEarthwithsomesmallorbitingplanet,orspreadofincurablediseases. 2.Intermsofhumanhealth,thepeople
8、ofthepoorercountrieswillsuffermost,becausetheircountriesdonothavemoneytoprotectthemwhenclimatechanges. StructuralanalysisSub-ideasinthesecondpart.1)the causes oftherisingconcentrationofgreenhousegasesintheatmosphere(Paragraphs3文案大全实用文档and4)2)t
