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Module5Unit1GreatscientistsreadingDoyouknowhowtoproveanewideainscientificresearch?drawaconclusionfindaproblemmakeaquestionthinkofamethodcollectresultsanalysetheresultsFindsupportingevidence7stagesinrightorderdrawaconclusionthinkofamethodcollectresultsmakeaquestionfindaproblemanalysetheresultsFindsupportingevidenceFast-readingJohnSnowdefeats“KingCholera”•British(1813~1858)•afigure(人物)inthehistoryofpublichealth,epidemiology(流行病学)andanesthesiology(麻醉学)WhatisCholera?Choleraistheillnesscausedbyabacterium(细菌)calledVibriacholerae(霍乱弧菌).Itinfectspeople’sintestines(肠),causingdiarrhea(腹泻),vomiting(呕吐)andlegcramps(抽筋).Whatistheproblem?Thecholerawasthemostdeadlydiseaseofitsday.Neitheritscause,noritscurewasunderstood.Whatcausedcholera?Para1:FindaproblemWhoisJohnSnow?afamousdoctorinLondon.attendedherasherpersonalphysician.Para2:makeaquestion:Howcholerakilledpeople?Choleramultipliedintheairwithoutreason.Acloudofdangerousgaswouldfloatarounduntilitfounditsvictims.Peopleabsorbeditwiththeirmeals.Para3:ThinkofamethodtotestwhetherthesecondtheoryiscorrectPara4:collecttheresultManydeathshappenedhere.Nodeathhappenedhere.Thewaterfromthepumpwastoblame.PublichousePara5:analyzetheresults:Whathappenedtothepumpwater?Removethehandlefromthepump.anychanges?/Pare6:Findsupportingevidence:Whatextraevidencedidhefind?Awomanandherdaughterwholivedfarawaybutdrankthewateralsodied.drawaconclusionwithcertaintyThepollutedwatercarriedthedisease.Para7:PreventionofcholeraReadthepassageagainandfillintheblanks:JohnSnowwasawell-known_______inLondoninthe_____century.Hewantedtofindthe______ofcholerainorderto______it.In1854whenacholera______out,hebegantogatherinformation.He_______onamapwhereallthedeadpeoplehadlivedandhefoundthatmanypeoplewhohaddrunkthedirtywaterfromthe______died.Sohedecidedthatthepollutedwatercarriedcholera.Hesuggestedthatthe_______ofallwatersuppliesbe_________andthewatercompanieswere__________notto______people___pollutedwateranymore.Finally“KingCholera”was_______.doctor19thcausedefeatbrokemarkedpumpsourceexaminedinstructedexposetodefeated