资源描述：
《新世纪高等院校英语专业本科生系列教材综合教程第八单元课后答案》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Unit8FocusonGlobalWarming TextcomprehensionI.AII.1.T; 2.T; 3.F; 4.F; 5.F.III.1.Paragraph2.Becauseglobalwarmingmaybethesinglelargestthreattoourplanet（theearth）.Low-lyingnationscouldbeawashinseawater,rainanddroughtpatternsacrosstheworldcouldchange,
2、hurricanescouldbecomemorefrequent,andElNinoscouldbecomemoreintense. 2.Paragraph3.Ourfactories,powerplants,andcarsburncoalandgasolineandspitoutcarbondioxide,producemethanebyallowingourtrashtodecomposeinlandfillsandbybreedinglargeherdsofmethane-belchingcattle
3、,andreleasenitrogenoxidebyusingnitrogen-basedfertilizers. 3.Paragraph4.Theincreasedconcentrationsofgreenhousegases prevent additionalthermalradiation from leavingtheEarth,socausetheglobalwarming. 4.Paragraph7.Aslightincrease in heatandraininequatorialregion
4、swouldincreasevector-borne带菌媒介引起的diseasessuchasmalaria;moreintenserainsandhurricanescouldcausemoreseverefloodingandmoredeathsincoastalregionsandalongriverbeds;evenamoderateriseinsealevelcouldthreatenthe low-lyingislands;hottersummerscouldleadto morecasesofh
5、eatstroke,hospitaladmissionsanddeathsamongvulnerablepeoplewithheartproblemsorrespiratoryproblems. 5.Paragraph8and10.Wecan curb ourconsumptionoffossilfuelsandusetechnologiestoreducetheemissionofheat-trappinggaseslike carbon二氧化碳 dioxide,methane,and nitrousoxi
6、des,andprotecttheforestsintheworld,andwecanalsoadvocatepoliciesthatwillcombatglobalwarmingoverthelongterm,thingslikecleancars, environmentallyresponsible renewableenergytechnologies,andstoppingthe clear-cutting ofvaluableforests. IV.1.Globalwarmingwillproba
7、blybethemostseriousthreattoourEarth,ifwedonottakeintoaccountofsomeotherpossibledisasters,suchasanotherworldwar,collisionofourEarthwithsomesmallorbitingplanet,orspreadofincurablediseases. 2.Intermsofhumanhealth,thepeopleofthepoorercountrieswillsuffermost,bec
8、ausetheircountriesdonothavemoneytoprotectthemwhenclimatechanges. StructuralanalysisSub-ideasinthesecondpart.1)the causes oftherisingconcentrationofgreenhousegasesintheatmosphere(Paragraphs3and4)2)the e
