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时间:2020-03-05
《天津高考英语二轮增分策略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.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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.Re
2、searchersinSpainandEnglandrecentlyfoundthatthewormsofthegreaterwaxmothcanbreakdownpolyethylene,whichaccountsfor40%ofplastics.Theteamleft100waxwormsonacommercialpolyethyleneshoppingbagfor12hours,andthewormsconsumedandbrokedownabout92milligrams,oralmost3%ofit.Toconfirmthattheworms’ch
3、ewingalonewasnotresponsibleforthepolyethylenebreakdown,theresearchersmadesomewormsintopaste(糊状物)andappliedittoplasticfilms.14hourslaterthefilmshadlost13%oftheirmass—apparentlybrokendownbyenzymes(酶)16fromtheworms’stomachs.TheirfindingswerepublishedinCurrentBiologyin2017.FedericaBert
4、occhini,co-authorofthestudy,saystheworms’abilitytobreakdowntheireverydayfood—beeswax—alsoallowsthemtobreakdownplastic.“Waxisacomplexmixture,butthebasicbondinpolyethylene,thecarbon-carbonbond,isthereaswell,”sheexplains.“Thewaxwormevolvedamethodorsystemtobreakthisbond.”JenniferDeBruy
5、n,amicrobiologistattheUniversityofTennessee,whowasnotinvolvedinthestudy,saysitisnotsurprisingthatsuchwormscanbreakdownpolyethylene.Butcomparedwithpreviousstudies,shefindsthespeedofbreakingdowninthisoneexciting.Thenextstep,DeBruynsays,willbetoidentifythecauseofthebreakdown.Isitanenz
6、ymeproducedbythewormitselforbyitsgutmicrobes(肠道微生物)?Bertocchiniagreesandhopesherteam’sfindingsmightonedayhelpemploytheenzymetobreakdownplasticsinlandfills.Butsheexpectsusingthechemicalinsomekindofindustrialprocess—notsimply“millionsofwormsthrownontopoftheplastic.”语篇解读 本文是一篇说明文。作者介绍
7、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.Whatcanwelearnaboutthewormsinthestudy?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“...foundthatthewormsofthegreaterwaxmothcanbreak
8、downpolyethylene...”和第二句中的
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