大学生英语四级考试阅读集训试题及答案.docx

大学生英语四级考试阅读集训试题及答案

第一篇：大学生英语四级考试阅读集训试题及答案Japanisgettingtoughaboutrecycling—andnotinthepaperandplastickindofway.Recently,thecountryrequiresthatallelectronicgoods—TVs,VCRs,stereos,andmore—berecycled.Butrecyclingwillnotbelefttoconsumers,instead,thedeviceswillbesenttotheoriginalmanufacturerforproperdisposal.Thenewlawposesafewchallengestomanufacturerswhoarenowrushingtosetupcollectionnetworksandperfectingtechniquestodisassembleandrecycleolderproducts.Withaneyetowardthefuture,theyarealsointegratingeasilyrecycledmaterialsintonewproducts.Plastics,amajorcomponentofmostelectronicproducts,poseaparticularobstaclebecausetheirqualitybecomesworseandworsewithage,losingstrengthandflexibilityevenifreprocessed.NECCorp.overcomesthisproblembycreatingaplasticssandwich,inwhichthefillingis100percentrecycledplasticandtheouterlayersamixtureof14percentrecycledmaterial.TheresultingplastichassufficientstrengthandtoughnessforuseasacasefordesktopPCs.Thecompany,incooperationwithplasticmakerSumitomoDow,hasalsodevelopedanewplastic,whichengineersclaimretainsitsmechanicalpropertiesthroughrepeatedrecycling.NECusestheplastic,whichisalsoflame-retardant(阻燃的)inbatterycasesfornotebookPCs.Meanwhile,MatsushitaElectric,makerofthePanasonicbrand,isavoidingplasticinfavorofmagnesium(镁).Magnesium,saysthecompany,isidealforrecyclingbecauseitretainsitsoriginalstrengththroughrepeatedreprocessing.Matsushitahasdevelopedmoldingtechniquestoformmagnesiumintothecasefora21-inchTV.Unfortunately,themagnesiumcaseandenergy-savingfeaturesmaketheTVabouttwiceasexpensiveasanordinarymodel.Thecompanyhopes,however,thatincreaseduseofmagnesiumwilleventuallybringpricesdown.练习题：Choosecorrectanswerstothequestion:1.AccordingtothepresentregulationsofJapan,therecyclingofpaperandplasticwillbetheresponsibilityof______.A..thegovernmentB.themanufacturersC.theconsumersD.thesellers2.WhichofthefollowingisNOTthecharacterofplastics?A.Mostelectronicproductscontainplastics.B.Itretainsitsoriginalstrengththroughreprocessing.C.Recycledplasticscanbeintegrated