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1、readingJohnSnowDefeats"KingCholera"JohnsnowYorkLondonJohnSnowwasborninYorkonMarch15th,1813,theoldestofninechildren.JohnSnow約翰斯諾（1813~1858），英國麻醉學家、流行病專家。他首次提出了預防霍亂的措施。1854年，倫敦霍亂流行，斯諾通過研究霍亂病死者的日常生活情況，尋找到他們的共同行為模式，發(fā)現(xiàn)了霍亂與飲用不潔水的關(guān)系，由于及時切斷了二者的聯(lián)系，有效制止了霍亂的流行。Wha
2、tisCholera?Choleraisaninfectiousdisease.Itinfectspeople’sintestines(腸),causingdiarrhea(腹瀉),vomitingandlegcramps.Bacteria/germsofcholera1.Skimming1).What’sthemainideaofthepassage?JohnSnowwasawell-knowndoctorinLondon.ThecauseofCholerawaspollutedwater.Thes
3、ourceofalldrinkingwatershouldbeexamined.HowJohnSnowcollected,analyzeddataandfoundthecauseofthediseaseandsolvedit.2.CarefulreadingReadthefirstparagraphcarefully,thenanswerthesequestions1.Whatwasthemostdeadlydiseasein19thcentury?Why?Thecholera,becauseneit
4、heritscause,noritscurewasunderstood.2.Whencouldthecholerabecontrolled?JohnSnowknewitwouldneverbecontrolleduntilitscausewasfound.Readparagraph2andanswerthequestion:3.Whatwerethetwotheoriesexplaininghowcholerakilledpeople?Acloudofdangerousgasfloatedinthea
5、irthenattackedvictims.Peopleabsorbedthediseasewiththeirmeals.Readthethirdparagraphthentellwhetherthesesentencesaretrueorfalse.4.WhenanotheroutbreakhitLondonin1854,Johnsnowwasreadytotestthesetwotheories.5.Hefoundthatintwotallbuildingsthecholeraoutbreakwa
6、ssosevere.Trueorfalse:tallbuildingsReadparagraph4andanswerthequestions:6.WhathelpedJohnSnowfindtheclueaboutthecauseofthedisease?Why?AmapofLondonBecauseithelpedhimtofindthatmanyofthedeathwerenearthewaterpumpinBroadStreetandSomehousesthathadnotdrunkthewat
7、erfromtheBroadStreetpumphadnodeaths(Para4-5)7.WhenwasJohnSnowabletoannouncewithcertaintythatpollutedwatercarrieddisease?AfterhefoundtwodeathsinanotherpartofLondonthatwerelinkedtotheBroadStreetoutbreak.(Para6)8.Whatwashissuggestiontodefeatcholera?Hesugge
8、stedthatthesourceofallwatersuppliesbeexaminedandnewmethodsofdealingwithpollutedwaterbefound.3).Usethesevenstagesinexamininganewscientificideatodescribeeachparagraph.MakeaconclusionThinkofamethodCollectresultsMakeupaquestionFindap
