环保科普英语阅读理解专项练习

环保科普英语阅读理解专项练习一、阅读材料：PlasticPollutionandBiodegradationSolutions二、阅读理解题目1.MultipleChoice(SingleAnswer)Whatisthemainconcernaboutmicroplastics?A)Theyreducetheamountofoxygeninoceans.B)Theyaretoosmalltoberemovedfromwater.C)Theyenterthefoodchainandharmorganisms.D)Theyincreasetheproductionofgreenhousegases.2.InferenceQuestionWhydoestheauthormentionPHAinthepassage?A)Toshowitisthemostpopularbiodegradablepolymer.B)Toillustrateaversatilesolutionforplasticpollution.D)Toexplainwhybacteriaareusedtomakeplastics.3.VocabularyGuessTheword“degrade”inthesentence“plasticwastebreaksdownintomicroplastics”mostlikelymeans______.A)toimproveinqualityB)tobreakintosmallerpartsC)toremainunchangedovertimeD)toreleaseharmfulgases4.MainIdeaQuestionWhichofthefollowingbestsummarizesthepassage?A)Thehistoryofplasticpollutionanditsglobalimpact.B)Howmicrobesareusedtoproducebiodegradableplastics.C)Theproblemofplasticpollutionandsolutionsusingbiodegradation.D)Thedifferencesbetweenbiodegradableandtraditionalplastics.5.ShortAnswerAccordingtothepassage,howdomicrobescontributetoplasticdegradation?三、答案与解析1.Answer:CExplanation:Thepassagestates,“microplastics...areingestedbymarineanimalsandevenenterthehumanfoodchain.”OptionAisincorrectbecausethereductionofoxygeninoceansisnotmentionedinrelationtomicroplastics.OptionBiswrongasthepassagedoesnotfocusonthedifficultyofremovingmicroplasticsfromwater.OptionDisincorrectsincetheproductionofgreenhousegasesfrommicroplasticsisnotdiscussed.2.Answer:B3.Answer:BExplanation:“Breakdownintomicroplastics”impliesthattheplasticisdividedintosmallerpieces.OptionAistheoppositeofwhat“degrade”meansinthiscontext.OptionCcontradictstheprocessofplasticbreakingdown.OptionDisnotrelatedtothemeaningof“breakdown”here.4.Answer:CExplanation:Thepassagefirstintroducesplasticpollution(theproblem)andthenexplainsbiodegradablepolymersandmicrobialdegradation(thesolutions).OptionAignoresthesolutionspartofthepassage.OptionBfocusesonlyontheproductionofbiodegradableplasticsbymicrobes,whichisnotthemainidea.OptionDemphasizesthedifferencesbetweenbiodegradableandtraditionalplastics,whichisnotthecoretopicofthepassage.5.SampleAnswer:Microbes(certainbacteriaandfungi)produceenzymestobreakdownplasticpolymersintosmallermolecules,andthesesmallermoleculesarethenusedasnutrients(metabolized).四、环保知识拓展1.KeyTerms(withDefinitions)Biodegradable:Capableofbeingbrokendownbynaturalprocesses(suchasmicrobes,sunlight)intoharmlesssubstances.Enzyme:Aproteinthatspeedsupchemicalreactions(forexample,thebreakdownofplastic).CircularEconomy:Aneconomicsystemfocusedonreusing,recycling,andreducingwaste(asopposedtothe“take-make-waste”linearmodel).2.Real-WorldApplication3.CriticalT