天津高考英语专题三阅读理解第二节分类突破六推理判断_写作意图题优选习题

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1、六、推理判断——写作意图题(2018·北京，C)Plastic-EatingWormsHumansproducemorethan300milliontonsofplasticeveryyear.Almosthalfofthatwindsupinlandfills(垃圾填埋场)，andupto12milliontonspollutetheoceans.Sofarthereisnoeffectivewaytogetridofit，butanewstudysuggestsananswermaylieinthestomachsofsomehungryworms.ResearchersinSpai

2、nandEnglandrecentlyfoundthatthewormsofthegreaterwaxmothcanbreakdownpolyethylene，whichaccountsfor40%ofplastics.Theteamleft100waxwormsonacommercialpolyethyleneshoppingbagfor12hours，andthewormsconsumedandbrokedownabout92milligrams，oralmost3%ofit.Toconfirmthattheworms’chewingalonewasnotresponsiblefor

3、thepolyethylenebreakdown，theresearchersmadesomewormsintopaste(糊状物)andappliedittoplasticfilms.14hourslaterthefilmshadlost13%oftheirmass—apparentlybrokendownbyenzymes(酶)fromtheworms’stomachs.TheirfindingswerepublishedinCurrentBiologyin2017.FedericaBertocchini，co-authorofthestudy，saystheworms’abilit

4、ytobreakdowntheireverydayfood—beeswax—alsoallowsthemtobreakdownplastic.“Waxisacomplexmixture，butthebasicbondinpolyethylene，thecarbon-carbonbond，isthereaswell，”sheexplains.“Thewaxwormevolvedamethodorsystemtobreakthisbond.”JenniferDeBruyn，amicrobiologistattheUniversityofTennessee，whowasnotinvolvedi

5、nthestudy，saysitisnotsurprisingthatsuchwormscanbreakdownpolyethylene.Butcomparedwithpreviousstudies，shefindsthespeedofbreakingdowninthisoneexciting.Thenextstep，DeBruynsays，willbetoidentifythecauseofthebreakdown.Isitanenzymeproducedbythewormitselforbyitsgutmicrobes(肠道微生物)?Bertocchiniagreesandhopes

6、herteam’sfindingsmightonedayhelpemploytheenzymetobreakdownplasticsinlandfills.Butsheexpectsusingthechemicalinsomekindofindustrialprocess—notsimply“millionsofwormsthrownontopoftheplastic.”语篇解读　本文是一篇说明文。作者介绍了一项科学发现：一种吃塑料的虫子——大蜡螟，它胃中的酶能够降解塑料，从而为人们解决塑料污染问题提供新的途径。43.Whatcanwelearnaboutthewormsinthestu

7、dy?A.Theytakeplasticsastheireverydayfood.B.Theyarenewlyevolvedcreatures.C.Theycanconsumeplastics.D.Theywindupinlandfills.答案　C解析　推理判断题。根据第二段第一句“...foundthatthewormsofthegreaterwaxmothcanbreakdownpolyethylene...”和第二句中的“t