高中英语课文原文和翻译（人教版必修5）

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1、必修5Unit1JOHHSHOWDEFEATS"KINGCHOLERA"JohnSnowwasafamousdoctorinLondon-soexpert,indeed,thatheattendedQueenVictoriaasherpersonalphysician.Buthebecameinspiredwhenhethoughtabouthelpingordinarypeopleexposedtocholera・Thiswasthedeadlydiseaseofitsday.Neitheritscausenoritscurewasunderstood・Somanythousa

2、ndsofterrifiedpeoplediedeverytimetherewasanoutbreak.JohnSnowwantedtofacethechallengeandsolvethisproblem・Heknewthatcholerawouldneverbecontrolleduntilitscausewasfound.Hebecameinterestedintwotheoriesthatpossiblyexplainedhowcholerakilledpeople.Thefirstsuggestedthatcholeramultipliedintheair.Acloud

3、ofdangerousgasfloatedarounduntilitfounditsvictims.Thesecondsuggestedthatpeopleabsorbedthisdiseaseintotheirbodieswiththeirmeals・Fromthestomachthediseasequicklyattackedthebodyandsoontheaffectedpersondied・JohnSnowsuspectedthatthesecondtheorywascorrectbutheneededevidenee.SowhenanotheroutbreakhitL

4、ondonin1854,hewasreadytobeginhisenquiry・Asthediseasespreadquicklythroughpoorneighbourhoods,hebegantogatherinformation.Intwoparticularstreets,thecholeraoutbreakwassoseverethatmorethan500peoplediedintendays.Hewasdeterminedtofindoutwhy.Firsthemarkedonamaptheexactplaceswhereallthedeadpeoplehadliv

5、ed・Thisgavehimavaluableclueaboutthecauseofthedisease・ManyofthedeathswerenearthewaterpumpinBroadStreet(especiallynumbers16,37,38and40).Healsonoticedthatsomehouses(suchas20and21BroadStreetand8and9CambridgeStreet)hadhadnodeaths・Hehadnotforeseenthis,sohemadefurtherinvestigations.Hediscoveredthatt

6、hesepeopleworkedinthepubat7CambridgeStreet・Theyhadbeengivenfreebeerandsohadnotdrunkthewaterfromthepump.Itseemedthatthewaterwastoblame.Next,JohnSnowlookedintothesourceofthewaterforthesetwostreets.HefoundthatitcamefromtheriverpollutedbythedirtywaterfromLondon.Heimmediatelytoldtheastonishedpeopl

7、einBroadStreettoremovethehandlefromthepumpsothatitcouldnotbeused.Soonafterwardsthediseasesloweddown.Hehadshownthatcholerawasspreadbygermsandnotinacloudofgas・InanotherpartofLondon,hefoundsupport!ngevideneefromtwootherdeathsthatwerelinkedtotheB