GivingCarsaSecondLifeMentiontheword“recycling”andfewofusthinkofcars,Butinaworldoflimitedspaceandresources,recyclingeverything—evencars—isveryimportant.Onceacarreachestheendofitslife,itistakenapart

　　GivingCarsaSecondLifeMentiontheword“recycling”andfewofusthinkofcars,Butinaworldoflimitedspaceandresources,recyclingeverything—evencars—isveryimportant.Onceacarreachestheendofitslife,itistakenapartandanypartsthatcanbereusedaresoldoff.Theremainingmetalismelteddownandsoldwhilealltheuselessmaterialsarejustthrownaway.Usually,seventy-fivepercentofthecarcanberecycled.ButnewenvironmentalrulesinEuropesaythatatleasteightypercentofoldcarpartsmustberecycledby2006andninety-fivepercentby2015.Toachievethis,someonehastofindawaytorecycleplastics,whichareusuallyjustthrownaway.Fortunately.Britishscientistshavecomeupwithasolution.Throughanewrecyclingprocess,theybreakdowntheplasticsintogas,oilandasmallamountofcarbon(碳)andfibre.Thisisabigstepforwardforthecarcompanies,whowanttousemoreplasticstoimproveacar'sefficiency(功率).CompanieslikeBMWarealsohopingtousemoreplasticsthatareeasiertorecycle.1.Judgingfromthepassage,thetitle“Givingcarsasecondlife”means“_”.A.repairingthe“dead”carsandsettingthemrunningawayB.usingthingsfromthe“dead”carstomakenewcarsC.makingthingsfromthe“dead”carsusefulagainD.makingacar'slifelongerthanexpected2.Atpresentitistheleastpossiblethat_ofanaveragecarismadeofplastic.A.25%B.20%C.10%D.5%3.Thelastsentenceofthepassageseemstosuggestthat_.A.plasticsareeasytorecycleB.plasticsareeasiertorecyclethanothermaterialsC.theplasticsnowusedforcarsaredifficulttorecycleD.allkindsofplasticsareequallydifficulttorecycle4.AccordingtothelastparagraphtheBritishscientistsaretryingto_.A.makenewthingsofoldplasticsB.makeplasticschangeintonewthingsC.useoldplasticpartsfornewcarsD.usemoreplasticstoimprovecar'sefficiency