2019年6月大學英語四級閱讀練習及答案(十三)

2019年6月大學英語四級閱讀練習及答案(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(鎂).Magnesium,saysthecompany,isidealforrecyclingbecauseitretainsitsoriginalstrengththroughrepeatedreprocessing.Matsushitahasdevelopedmoldingtechniquestoformmagnesiumintothecasefora21-inchTV.Unfortunately,themagnesiumcaseandenergy-savingfeaturesmaketheTVabouttwiceasexpensiveasanordinarymodel.Thecompanyhopes,however,thatincreaseduseofmagnesiumwilleventuallybringpricesdown.練習題：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]推理判斷題。文章首段提到了電子產(chǎn)品的回收利用與紙張和塑料不同;本段最后一句中的but表明了以上不同點在于電子產(chǎn)品的回收不依靠消費者，而依靠生產(chǎn)者。結合以上兩點，能夠推斷紙張和塑料的回收利用主要靠消費者，所以選項C為準確答案。2.[B]事實細節(jié)題。本題考査列舉處。第2段第3句列舉了塑料的特性，對照選項和該句，就能發(fā)現(xiàn)文中明確提到選項A、C、D,而選項B顯然與原文意思相反。3.[B]事實細節(jié)題。本題考査復合句的理解。第2段第4句是一個非限制性定語從句，是plasticssandwich的定義，選項B是對該定語從句所述亊實的總結，所以選項B準確。選項A在文中沒有提及;選項C中的maximum是對原文sufficient的曲解;選項D中的100%這個數(shù)據(jù)不準確，文中只提到plasticssandwich里層是100%的再生塑料。4.[C]推理判斷題。本題考査轉折處。最后一段倒數(shù)第2句中的Unfortunately一詞指出了用鎂作機殼的電視機很貴，從而暗示它們并不受消費者歡迎，所以