Module 4 The natural world Unit 10 Air知识总结及练习（含答案）

Unit10Air单词、短语air，factory，clean，everywhere，smoke，fresh，alive，dirty，plant，balloon，hurt，tie，string，cloth，keep……alive，planttrees，apieceof句子Itkeepsthemhighinthesky.★词汇突破★1.air（名词）空气Theairisfresh.空气清新。2.factory(名词）工厂Lookattheblacksmokefromthefactory.看那边黑烟来自于工厂。3.clean(形容词）干净的；洁净的Treeskeeptheairclean.树木使空气干净。4.everywhere(副词）到处；处处I'velookedeverywhereformypen，butIcan'tfindit.我到处找我的笔，但是还是没找到。5.smoke（名词）烟Whereisthesmokefrom?烟从哪里来？6.fresh（形容词）清新的Theairissofreshhere.这里的空气如此清新。7.alive(形容词）活着的Weallneedittokeepusalive.我们需要它来维持生命。8.dirty(形容词）脏的Itmakestheairdirty.它把空气都弄脏了。9.plant(动词）种植Weshouldplantmoretreesandkeeptheairclean.我们应该多种点树，让空气保持清新。★句型突破★Itkeepsthemhighinthesky.它使它们高高的在天上。★知识拓展★空气污染airpollution空气污染fogandhaze雾霾constructiondust建筑粉尘carbonemission碳排放vehicleexhaust汽车尾气harmfulsubstances有害物质单选题1.Whatkeepsusalive?（）A.WaterB.FireC.AirD.Earth2.Wheredoestheblacksmokeusuallycomefrom?（）A.TreesB.FactoriesC.PlantsD.Animals3.Whatdotreesdototheair?（）A.MakeitdirtyB.KeepitcleanC.MakeithotD.Makeitcold4.Whichwordmeans"everywhere"?（）A.SomewhereB.AnywhereC.EverywhereD.Nowhere5.Whatistheoppositeof"fresh"?（）A.DirtyB.CleanC.ClearD.Pure6.Whatdowecalltheairthatisnotclean?（）A.FreshairB.CleanairC.DirtyairD.Pureair7.Whatcanwedotokeeptheairclean?（）A.PlantmoretreesB.BuildmorefactoriesC.DrivemorecarsD.Burnmorewood8.Whatisthemaincauseofairpollution?（）A.PlantingtreesB.BreathingC.BurningfossilfuelsD.Drinkingwater9.Whichofthefollowingisnotasourceofairpollution?（）A.VehicleexhaustB.ConstructiondustC.CarbonemissionD.Photosynthesis10.Whatdowecallthesubstancesthatareharmfultoourhealth?（）A.HarmfulsubstancesB.UsefulsubstancesC.NaturalsubstancesD.Organicsubstances11.Whatdoballoonsneedtokeepthemhighinthesky?（）A.AirB.WaterC.FireD.Earth12.Whatdoes"keep...alive"mean?（）A.Make...dieB.Keep...livingC.Make...sleepD.Make...stop13.Whatdowecallaplacewherethingsaremade?（）A.SchoolB.HospitalC.FactoryD.Restaurant14.Whatdowecallapieceofmaterialusedforcoveringormakingthings?（）A.ClothB.WoodC.StoneD.Metal15.Whatdowecalltheprocessofputtingtreesintothegroundtogrow?（）A.PlantingB.WateringC.CuttingD.Burning易错知识点及练习易错知识点1:形容词辨析易错点:Clean和fresh的区别，dirty的反义词。练习:-Theairisso______here.(fresh)-Itmakestheair______.(dirty)易错知识点2:动词短语的用法易错点:Keep...alive的意思。练习:-Weallneedairto______usalive.(keep)-Treeshelpto______theairclean.(keep)答案及解析1.C.Air(空气维持我们的生命)2.B.Factories(工厂通常会排放黑烟)3.B.Keepitclean(树木使空气保持干净)4.C.Everywhere(everywhere表示“到处”)5.A.Dirty(dirty是fresh的反义词)6.C.Dirtyair(不干净的空气叫dirtyair)7.A.Plantmoretrees(多种树可以保持空气清洁)8.C.Burningfossilfuels(燃烧化石燃料是空气污染的主要原因)9.D.Photosynthesis(光合作用不是空气污染的来源)10.A.Harmfulsubstances(有害物质对我们的健康有害)11.A.Ai