教案Book 9_U4_练习_课外阅读.doc

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1、阅读文章，选择正确答案，回答问题。Peopleandthesourcesofairpollutionarefoundinthesameplaces.Thismeansthatcitieswithlargepopulationshavethebiggestproblemofdirtyair.Airpollutioniscausedbymanydifferentthings.Amajorsourceofairpollutionisthegasfumesfromcars.Statisticsshowthat93perce

2、ntofallautotripsarewithincities.Anothermajorsourceofdirtyareistheburningofcoalandoilforenergy.Thisenergyisneededtomakeelectricity.Ofcourse,muchmoreelectricityisusedinthecitythaninthecountry.Ontheaverage,wethrowawaymoretrashandgarbagethantheyearbefore.Theburnin

3、gofgarbagecontributestoairpollution.Manymajorindustriesarealsoresponsibleforthedirtyairinthearoundcities.Thefumesfromiron,steel,chemical,andpetroleumproductionaddparticlestotheair.Theeffectsofairpollutionrangefrommildheadachestodeath.Thelevelsofpollutionfoundi

4、nheavyfortrafficmaycauseheadachesforlossofclearvision.Wherevercoalandoilareusedforfuel,fumesmaykilltreesandplantsandcausemetaltocorrode.Insomeofthelargercities,thesefumesendangerthelifeofhumanbeingsbycontributingtolungdiseasesandcausingearlydeath.1.Thekeypoint

5、ofthepassageisthat______.A.thecauseofairpollutionispeopleB.thecausesandtheeffectsofairpollutionarebothfoundincitiesC.theeffectsofairpollutionrangefromheadachestodeathD.airpollutioniscausedbydirtyair2.Whatisthepurposeofthispassage?A.Topersuadepeopletostoppollut

6、ingtheairB.TotellthecausesofairpollutionC.TotellwhycitiesarebadplacestoliveD.Todescribewhycitiesarebadplacestolive3.Whyisairpollutionmoregraveinthecitythaninthecountry?A.Becausetherearelargerpopulationsincities.B.Becausetheairinthecityisdirty.C.Becausethereare

7、morecarsinthecity.D.Becausetherearemuchmoregasfumesfromcarsandburningofcoalandoilforenergyinthecitythaninthecountry.4.Thefumesfromcoalandoilmaycausemetal______.A.toturnblackB.tobecomerustyC.tocorrodeD.totwist5.Inlargercities,thefumesfromcoalandoilmaycontribute

8、to______.A.heartdiseaseB.lungdiseaseC.lossofclearvisionD.seriousheadache答案：1.B2.A3.D4.C5.B