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Unit1GreatscientistsReadingWhatdoyouknowaboutinfectiousdiseases?Pre-readingSARSAIDS/SARS/Birdflu/TB(肺结核)/Ebolaviruscanbespreadeasily.maydogreatharmtopeople.aredifficulttocure.Ebolavirus埃博拉病毒是引起人类和灵长类动物发生埃博拉出血热的烈性病毒，其引起的埃博拉出血热（EBHF）是当今世界上最致命的病毒性出血热，感染者会恶心、呕吐、腹泻、肤色改变、全身酸痛、体内出血、体外出血、发烧等。病毒可透过与患者体液直接接触，或与患者皮肤、黏膜等接触而传染或通过飞沫传播。西非地区埃博拉疫情“严重且反常”，是“近40年来这类疫情最复杂的一次暴发”。Whatotherinfectiousdiseasesdoyouknow?Forexample:Whenyoueatsomefoodthatisnotfresh……Youmayfeel…Maybeyouhavegot________.CholeradrawaconclusionthinkofamethodcollectresultsmakeaquestionfindaproblemanalysetheresultsfindsupportingevidencefindaproblemmakeaquestionthinkofamethodcollectresultsanalysetheresultsdrawaconclusionHowtoproveanewideainscientificresearch?findsupportingevidenceJohnSnowdefeats“Kingcholera”JohnSnowdefeats“kingcholera”Whatcanyoulearnfromthetitle?人物：事件：defeatscholeraWhoisJohnSnow?Whathappenedtothem?attendedherasherpersonalphysicianQueenVictoriaJohnSnow约翰.斯诺(1813~1858),英国麻醉学家、流行病专家。他首次提出了预防霍乱的措施。1854年,伦敦霍乱流行,斯诺通过研究霍乱病死者的日常生活情况,寻找到他们的共同行为模式,发现了霍乱与饮用不洁水的关系,由于及时切断了二者的联系,有效制止了霍乱的流行。Fouroutbreaksofcholerainthe1830sand1840skilledmanypeopleinEngland.In1854,“themostterribleoutbreakofcholerawhicheveroccurredinthekingdom”began.Itwassoviolentandsuddenthat127peoplediedinthefirstthreedays.TheterriblecholeraBacteria/germsofcholeraNameofillnesscholera(霍乱)Symptom(症状)severevomiting(呕吐)anddiarrhoea(腹泻)Aftereffect(后果)diequicklyfromalossofliquidWhatwasthecauseofthisillness?HowdidJohnSnowfinditout?1.Thepassagemainlytellsusthat____.A.thecauseofcholerawaspollutedwaterB.JohnSnowwasawell-knowndoctorinLondonC.thesourceofalldrinkingwatershouldbeexaminedD.HowJohnSnowfoundthecauseofthecholeraanddefeatedit.DSkimthetextandchoosethemainideaofthetext.drawaconclusionfindaproblemmakeaquestionthinkofamethodcollectresultsanalysetheresultsrepeatifnecessaryMatchthemPara1Para2Para3Para4Para5Para6Para7PreventionofCholeraReadthepassageandnumbertheseeventsintheorderthattheyhappened.JohnSnowbegantotesttwotheories.AnoutbreakofcholerahitLondonin1854.Heannouncedthatthewatercarriedthedisease.JohnSnowmarkedthedeathsonamap.2147Careful—reading:KingCholerawasdefeated.Hefoundthatmostofthedeathswerenearawaterpump.Hehadthehandleremovedfromthewaterpump.JohnSnowinvestigatedtwostreetswheretheoutbreakwasverysevere.3856Whatistheproblem?Thecholerawasthemostdeadlydiseaseofitsday.Neitheritscause,noritscurewasunderstood.Whatcausedcholera?Para.1Makeaquestion:Whichtheorytobelievein?Choleramultipliedintheairwithoutreason.Acloudofdangerousgaswouldfloatarounduntilitfounditsvictims.Peopleabsorbeditwiththeirmeals.Whichonedoyoubelievemore?WhataboutJohnSnow?Para.2-3Para3ThinkofamethodTesttwotheoriesJohnsnowsuspectedthatthesecondtheorywascorrect.Para.4AmapofBroadStreetWhatmethoddidheuse?BroadStreetManydeathshappenedhere.Nodeathhappenedhere.Itseemedthewaterfromthepumpwastoblame.Whatdidhedonext?Publichouse(Para6)Whatwasanothersupportingevidence?(Para5)Helookedintothesourceofthewater…whatistheresult?JohnSnowwasabletoannouncewithcertaintythatpollutedwatercarriedthevi...