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2021英语四级听力：Plastic思维导图

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2021英语四级听力：Plastic

树图思维导图提供 2021英语四级听力：Plastic 在线思维导图免费制作，点击“编辑”按钮，可对 2021英语四级听力：Plastic 进行在线思维导图编辑，本思维导图属于思维导图模板主题，文件编号是：f7b7893c71f6f421bf5464a13d840409

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Weuseplasticwraptoprotectourfoods.Weputourgarbageinplasticbagsorplasticcans.Wesitonplasticchairs,playwithplastictoys,drinkfromplasticcups,andwashourhairwithshampoofromplasticbottles!

Plasticdoesnotgrowinnature.Itismadebymixingcertainthingstogether.Wecallitaproducedormanufacturedmaterial.Plasticwasfirstmadeinthe1860sfromplants,suchaswoodandcotton.Thatplasticwassoftandburnedeasily.

Thefirstmodernplasticsweremadeinthe1930s.Mostclearplasticstartsoutasthick,blackoil.Thatplasticcoatinginsideapanbeginsasnaturalgas.

Overtheyears,hundredsofdifferentplasticshavebeendeveloped.Somearehardandstrong.Somearesoftandbendable.Someareclear.Somearemany-colored.Thereisaplasticforalmosteveryneed.Scientistscontinuetoexperimentwithplastics.Theyhopetofindevenwaystousethem!