2019年6月大学英语四级阅读练习及答案(十三)

2019年6月大学英语四级阅读练习及答案(十三)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.Recycledplasticscanbeintegratedintonewproducts.D.Plasticswillloseflexibilityafteracertainperiodoftime.3.Accordingtothepassage,theterm“plasticsandwich”refersto_____.A.akindofsandwich-shapedtoymadeofplasticsB.akindofplasticswithdifferentintegrationineachlayerC.akindofplasticswithmaximumstrengthandflexibilityD.akindofplasticsmadeof100%recycledmaterials4.Inthepassage,itisimpliedbutNOTstatedthat_____.A.disposingtheplasticsisoneofNECCorp’sbusinessesB.magnesiumisanidealmaterialforthecaseofTVC.21-inchTVwithmagnesiumcaseisn’tverypopularsofarD.magnesiummustbebetterthantheplastics5.Theauthorwritesthispassageinorderto_____.A.informB.instructC.predictD.persuade1.[C]推理判断题。文章首段提到了电子产品的回收利用与纸张和塑料不同;本段最后一句中的but表明了以上不同点在于电子产品的回收不依靠消费者，而依靠生产者。结合以上两点，能够推断纸张和塑料的回收利用主要靠消费者，所以选项C为准确答案。2.[B]事实细节題。本题考査列举处。第2段第3句列举了塑料的特性，对照选项和该句，就能发现文中明确提到选项A、C、D,而选项B显然与原文意思相反。3.[B]事实细节题。本题考査复合句的理解。第2段第4句是一个非限制性定语从句，是plasticssandwich的定义，选项B是对该定语从句所述亊实的总结，所以选项B准确。选項A在文中没有提及;选项C中的maximum是对原文sufficient的曲解;选项D中的100%这个数据不准确，文中只提到plasticssandwich里层是100%的再生塑料。4.[C]推理判断题。本题考査转折处。最后一段倒数第2句中的Unfortunately一词指出了用镁作机壳的电视机很贵，从而暗示它们并不受消费者欢迎，所以