初中九年级英语课件ReadingThe world in danger 市赛一等奖

Reading:TheworldindangerBecauseseawaterispolluted，fish’shearingbecomespoor,somewhalesswimontothebeach.TheworldisindangerOurworldisindanger.Wemustdosomethingtoprotecttheenvironment.But,whatarethemainproblemsweface?ThegreenhouseeffectTheatmospherearoundtheEarthisnecessaryforalllivingthings.Itisliketheglassofagreenhouse,lettingsunlightinandkeepingheatfromgettingout.Withoutit,theEarthwouldbethesameastheMoon—coldandlifeless.Whenweburnfuelssuchaspetrolandcoal,weproduceagascalledcarbondioxide(CO₂).Toomuchofthisgaspollutestheatmosphere,andcausesittokeepintoomuchheat.Asaresultofthegreenhouseeffect,theEarth’stemperatureisincreasing.Thiscausessealeveltorise,andinthefuturemaycausecitiestodisappear.CuttingdownforestsEveryyear,wedestroynaturebycuttingdownhugeareasofforests.ThismakesthegreenhouseeffectworsebecausetreestakeinCO₂andproduceoxygen.Cuttingdowntreesalsodestroysthehomesoftheanimalsthatliveinourforests,andcausesthesurfaceofthesoiltobeeasilydestroyedbyrain.Thiscanresultinfloodsandevenmoredamagetotheenvironment.BadhabitsManyofourhabitscausepollution.Peopleoftenusethingsonceandthenthrowthemaway,orleavethemonthegroundaslitter.Thiscreatesmountainsofrubbishandpollutesourlandandseas.Inordertoprotecttheenvironment,weneedtotakeproperaction.Weshouldbedifferentfrommanyconsumersandbecome“greenconsumers”.Thismeansthatweshouldonlybuyanduseproductsfriendlytotheenvironment.Weshouldalsorecycleasmanythingsaswecan.Wecanreusethingsforthesamepurposeasbefore,orwecanusethemfornewpurposes.Ifwejustlearntoliveinnewanddifferentways,wecanmakeadifference.1.What’sthearticlemainlyabout?2.Whatproblemsdoesthearticlediscuss？

Environmentalproblems.Ⅰ.Readthepassagequickly,andthenanswerthefollowingquestions.Thegreenhouseeffect，cuttingdownforestsandbadhabits.3.Howmanypartsarethereinthearticle？Three.4.What’stheeachpartmainlyabout?Part1Part2Part3

CuttingdownforestsBadhabitsThegreenhouseeffect()1.Whatdoyouknowabouttheatmosphere?A.ItisuselessfortheEarth.B.ItisnecessaryfortheEarth.C.Itistheglassofagreenhouse.D.ItisthesameastheMoon.()2.Cuttingdownhugeareasofforestscan_________.A.produceoxygenB.makesealevelriseC.makeanimalslosetheirhomesD.letthegreenhouseeffectbetter(

)3.Wecanbecomegreenconsumersby_________.A.creatingmuchrubbish.B.takingspecialaction.C.throwinglitteraway.D.recyclingmanythings.

BCDⅡ.Readthepassagecarefully,andthenanswerthefollowingquestions.4.WhyistheEarth’stemperatureincreasing?5.Whatcantreestakein?6.Whatshouldyoudoifyouwanttobegreenconsumers?7.Whyistheworldindanger?Asaresultof/Becauseofthegreenhouseeffect.CO₂.

Weshouldonlybuyanduseproductsfriendlytotheenvironment.Becausepeoplearenotfriendlytotheenvironment.Asaresultofincreasesealevelsurfacemountainsof1__________theflood,manypeoplewerelefthomeless.(becauseoftheeffectof)2Theworldpopulationwillcontinueto________formanyyearstocome.(tobecomegreaterinnumber)3Themountainishigh.Itis3,000metersabove_______.(theheightoftheocean)4Manfirstwalkedonthe__________oftheMoonin1969.(thetoppartofanareaofland)5Therewere____________toysintheshopsduringtheChristmasholiday.(averylargenumberof)Thewordsinitalicsexplainthemeaningsofsomewordsonpage35.Findthesewordstocompletethesentences.Changetheirformsifnecessary.VocabularyThegreenhouseeffectTheatmospherearoundtheEarthisnecessaryforalllivingthings.Itisliketheglassofagreenhouse,lettingsunlightinand(A)keepingheatfromgettingout.(B)

it,theEarthwouldbe(C)和月球一样—coldandlifeless.Whenweburnfuelssuchaspetrolandcoal,weproduceagascalledcarbondioxide(CO₂).Toomuchofthisgaspollutestheatmosphere,andcauses（D）ittokeepintoomuchheat.Asaresultofthegreenhouseeffect,theEarth’stemperatureisincreasing.Thiscausessealeveltorise,andinthefuturemaycausecitiestodisappear.CuttingdownforestsEveryyear,wedestroynaturebycuttingdownhugeareasofforests.Thismakesthegreenhouseeffect(E)

becausetreestakeinCO₂andproduceoxygen.(F)Cuttingdowntreesalsodestroysthehomesoftheanimalsthatliveinourforests,andcausesthesurfaceofthesoiltobeeasilydestroyedbyrain.Thiscan（G）causefloodsandevenmoredamagetotheenvironment.Ⅲ、Readthepassageagain,payattentiontothemainwordsandphrases.1.写出文中划线部分（A）和（G）的同义词语或近义词语__________________2.在文中（B）和（E）处分别填入一个适当的英语单词____________3.将文中划线部分（C）译成英语__________4.文中划线部分（D）指代的是____________

5.将文中划线部分（F）改写为：Thehomesoftheanimals______alsodestroyed______cuttingdownt