广东省广州市培才高级中学高中英语《Unit 1 Great scientists》reading课件 新人教版必修5.ppt

johnsnowdefeats kingcholera reading johnsnowdefeats kingcholera whatcanyoulearnfromthetitle 人物 事件 defeatscholera whoisjohnsnow whathappenedtothem queenvictoria johnsnow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 theterriblecholera bacteria germsofcholera whatwasthecauseofthisillness howdidjohnsnowfinditout skimthetextandfindthemainideaofthetext thepassageismainlyabout how foundthecauseofthe anddefeatedit johnsnow cholera readthetextquicklyandquietlytomatchthestagesinanexperimentandtheexampleinthisinvestigation readthepassagequicklyandfindthenumberbelowandtherelevanthappeningsinthepassage thefirstsuggestedthat multipliedintheair thesecondsuggested absorbedthisdiseaseintotheirbodieswiththeirmeals anotheroutbreakhitlondon morethan500peoplehaddiedin10days thesenumbersinbroadstreetnearthewaterpumphadmanyofthedeaths 20and21broadstreetand8and9cambridgestreethadnodeaths theydidn tdrinkthewaterfromthebroadstreetpump thesefamiliesworkedinthepubat7cambridgestreet 1 thepassagemainlytellsusthat thecauseofcholerawaspollutedwaterb johnsnowwasawell knowndoctorinlondonc thesourceofalldrinkingwatershouldbeexaminedd johnsnowdidsomeresearchandhelpedtosolve kingcholera choosethebestanswer d 2 whatwasthekeyhelpforjohnsnow sdiscovery a thegovernment b thewomanmovingawayfrombroadstreet c thewatercompany d themapmadebyhimself d 1 johnsnowbelievedidea2wasright howdidhefinallyproveit johnsnowfinallyprovedhisideabecausehefoundanoutbreakthatwasclearlyrelatedtocholera collectedinformationandwasabletotiecasesoutsidetheareatothepollutedwater readandanswerthequestions 2 doyouthinkjohnsnowwouldhavesolvedthisproblemwithoutthemap giveareason no themaphelpedjohnsnoworganizehisideas hewasabletoidentifythosehouseholdsthathadmanydeathsandchecktheirwater drinkinghabits heidentifiedthosehousesthathadnodeathsandsurveyedtheirdrinkinghabits theevidenceclearlypointedtothepollutedwaterbeingthecause summary johnsnowwasawell known inlondoninthe century hewantedtofindthe ofcholerainorderto it in1854whenacholera out hebegantogatherinformation doctor 19th cause defeat broke he onamapwhereallthedeadpeoplehadlivedandhefoundthatmanypeoplewhohaddrunkthedirtywaterfromthe died sohedecidedthatthepollutedwatercarriedcholera hesuggestedthatthe ofal