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时间:2019-08-04
《人教版高中英语必修五unit1课文重点练习详解》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、Unit1GREATSCIENTISTSJOHNSNOWDEFEATS“KINGCHOLERA”JohnSnowwasafamousdoctorinLondon—soexpert,indeed,thatheattendedQueenVictoriaasherpersonalphysician.Buthebecameinspiredwhenhethoughtabouthelpingordinarypeople(whowere)exposedtocholera.Thiswasthedeadlydis
2、easeofitsday.Neitheritscausenoritscurewasunderstood.Somanythousandsofterrifiedpeoplediedeverytimetherewasanoutbreak.JohnSnowwantedtofacethechallengeandsolvethisproblem.Heknewthatcholerawouldneverbecontrolleduntilitscausewasfound.(expose:1暴露beexposedt
3、oallkindsofweather.经受风吹雨打。Exposesbtodanger使某人面临危险。AstudentwhohasbeenexposedtoEnglishforsome6years.接触英语达六年左右的学生。2.揭露。Exposeapolitician’slies.Hehasbeenexposedasaliar.他说谎的行为被揭穿。)Hebecameinterestedintwotheories(thatpossiblyexplainedhowcholerakilledpeople
4、).Thefirstsuggestedthatcholeramultipliedintheair,acloudofdangerousgasfloatedarounduntilitfounditsvictims.Fromthestomachthediseasequicklyattackedthebodyandsoontheaffectedpersondied.JohnSnowsuspectedthatthesecondtheorywascorrectbutheneededevidence.Sowh
5、enanotheroutbreakhitLondon(Therewasanotheroutbreak)in1854,hewasreadytobeginhisenquiry.Asthediseasespreadquicklythroughpoorneighbourhoods,hebegantogatherinformation.Intwoparticularstreets,thecholeraoutbreakwassoseverethatmorethan500peoplediedintendays
6、.Hewasdeterminedtofindoutwhy.Firsthemarkedonamaptheexactplaces(whereallthedeadpeoplehavelived).Thisgavehimavaluableclueaboutthecauseofthedisease.ManyofthedeathswerenearthewaterpumpinBroadStreet(especiallynumbers163738and40).Healsonoticedthatsomehouse
7、s(suchas20and21BroadStreetand8and9CambridgeStreet)hadhadnodeaths.Hehadnotforeseenthis,sohemadefurtherinvestigations.Hediscoveredthatthesepeopleworkedinthepubat7CambridgeStreet.Theyhadbeengivenfreebeerandsohadnotdrunkthewaterfromthepump.Itseemedthatth
8、ewaterwastoblame,Next,JohnSnowlookedintothesourceofthewaterforthesetwostreets.Hefoundthatitcamefromtheriver(pollutedbythedirtywaterfromLondon).HeimmediatelytoldtheastonishedpeopleinBroadStreettoremovethehandlefromthepumpsothatitcouldnotbeused.Soonaft
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