高中英语 Module4方案一精品教案（6）外研版必修5-外研版高二必修5英语教案VIP免费

英语必修5外研版Module4方案一精品教案（6）TheSixthPeriod:EverydayEnglish&WritingTeachingaims1.TomastersomeeverydayEnglish2.TolearnhowtowriteanemailTeachingprocedure:Step1.RevisionStep2.EverydayEnglish:Step3.ReadingandwritingActivity1:Readthee-mailandnumberthesethingsintheorderActivity2:Underlinetheadjectivesusedtodescribe:1.theatmosphere2.themusic3.thefoodActivity3:WriteareportforyourschoolnewspaperaboutthecarnivalyouorganizedtocelebrateChineseNewYear,including:Whenandwherethecarnivalhappenedthedecorationsthemusicthecostumesthefoodtheatmospherespecialcustoms(在文中尽量使用句型，如：倒装句、强调句、名词性从句)Step4.Homework:Previewculturalcorner【巩固作业设计】阅读下列四篇短文，从每小题后所给的A,B,C或D四个选项中，选出最佳选项。Riversmaybeasignificantsourceofthegreenhousegasnitrousoxide(一氧化二氮),scientistsnowfind.TheircalculationsuggeststhatacrosstheglobethewaterwayscontributethreetimestheamountofnitrousoxidetotheatmosphereashadbeenestimatedbytheInternationalPanelonClimateChange(IPCC),theUnitedNationsscientificbodychargedwithreviewingclimatechangeresearch.Theyfoundthattheamountofnitrousoxideproducedinstreamsisrelatedtohumanactivitiesthatreleasenitrogen(氮)intotheenvironment,suchasfertilizeruseandsewagedischarges.“Humanactivities,includingfossilfuelcombustionandintensiveagriculture,haveincreasedtheavailabilityofnitrogenintheenvironment,”saidJakeBeaulieuoftheUniversityofNotreDameandtheU.S.EnvironmentalProtectionAgencyinCincinnati,Ohio,andleadauthorofthepaperpublishedthisweekinthejournalProceedingsoftheNationalAcademyofSciences.“Muchofthisnitrogenistransportedintoriverandstreamnetworks,”Beaulieusaid.There,microbes(微生物)convertthenitrogenintonitrousoxide(alsocalledlaughinggas)andaninertgascalleddinitrogen(二氮).Thefindingisimportant,theresearcherssay,becausenitrousoxideisapowerfulgreenhousegasthatcontributestoclimatechangeanddestructionofthestratosphere’sozonelayer,whichprotectsusfromthesun’sharmfulultraviolet(紫外线)radiation.Comparedwithcarbondioxide,nitrousoxideis300-foldmorepowerfulintermsofitswarmingpotential,thoughcarbondioxideisafarmorecommongreenhousegas.Scientistsestimatenitrousoxideaccountsforabout6percentofhuman-inducedclimatechange.Beaulieuandcolleaguesmeasurednitrousoxideproductionratesin72streams.Whensummedacrosstheglobe,theresultsshowedriversandstreamsarethesourceofatleast10percentofhuman-causednitrousoxideemissionstotheatmosphere.“Changesinagriculturalandland-usepracticesthatresultinlessnitrogenbeingdeliveredtostreamswouldreducenitrousoxideemissionsfromrivernetworks,”Beaulieusaid.1.Fromthesecondparagraphwecanlearn.A.actuallyriversgiveoffmuchmorenitrousoxidethanexpectedB.scientists’calculationistotallywrongC.humanactivitiesreleasenitrousoxideintotheriversD.thereisnonitrogeninfertilizer2.WhichofthefollowingisNOTthesourceofnitrogen?A.Fertilizeruse.B.Sewagedischarges.C.Fossilfuelcombustion.D.Climatechange.3.Nitrousoxideisapowerfulgreenhousegasbecause.A.itcanprotectusfromthesun’sharmfulultravioletradiationB.itistoblameformostofhuman-inducedclimatechangeC.itisafarmorecommongreenhousegasD.ithasmuchmorewarmingpotentialthancarbondioxide4.Whatdoesthepassagemainlytellsus?A.Riversmaybeasourceofthegreenhousegasnitrousoxide.B.It’shumanactivitiesthatreleasenitrogenintotheenvironment.C.HowtoreducenitrousoxideemissionsfromrivernetworksDWhattodowiththeclimatechangecausedbynitrousoxide.【参考答案】1—4、ADDA