人教版必修5 Unit 1 Section Two Reading 教学课件

Unit1GreatscientistsJohnSnowdefeats“KingCholera”ReadingandComprehendingAbriefintroductionofcholeraBroadStreetBacteria/germsofcholeraItinfectspeople’sintestines(肠道),causingdiarrhoea(腹泻),vomiting(呕吐)anddehydration(脱水)

ManydeathsinAfricancountriesin2005andevennow5oodeathsin10daysin1854inLondon.Spreadfromonepersontoanother.Soitisan

infectiousDisease.

infect/affect

peopleotherinfectiousdiseases?AIDSTB(肺结核)bird-fluseriousdeadlysevereSARSWhoisJohnSnow?afamousdoctorinLondon.

Whathappenedtothem?

attendedhertoeasethebirthofherbabies.1.Fastreading1).What’sthemainideaofthepassage?JohnSnowwasawell-knowndoctorinLondon.ThecauseofCholerawaspollutedwater.Thesourceofalldrinkingwatershouldbeexamined.HowJohnSnowcollected,analyzeddataandfoundthecauseofthediseaseandsolvedit.2).

Use

thesevenstages

inexamininganewscientificideato

describeeachparagraph.drawaconclusionfindaproblemmakeupaquestionthinkofamethodcollectresultsanalysetheresultsfindsupportingevidencePara1Para2Para3Para4Para5Para6para7

Findaproblem

Whatcausescholera?MakeupaquestionWhichtheoryiscorrect?ThinkofamethodCollectdataonthosewhowereillordiedandwheretheygottheirwater.Para.1Para.2Para.3Para.5AnalysetheresultsAnalysethewatertoseeifthatisthecauseoftheillness.Para.6FindsupportingevidenceFindotherevidencetoconfirmhisconclusion.Para.7MakeaconclusionThewateristoblame.Thesourceofalldrinkingwatershouldbeexaminedsothatitissafe.Para.4CollectresultsPlot(标出）informationonamaptofindoutwherepeoplediedordidnotdie.2.Carefulreading

Readthepassageparagraphbyparagraphcarefully,thenanswerthesequestions1.Whatwasthemostdeadlydiseasein19thcentury?Why?2.Whencouldthecholerabecontrolled?

Cholera.Becauseneitheritscause,noritscurewasunderstood.JohnSnowknewitwouldneverbecontrolleduntilitscausewasfound.Paragraph1Whatistheproblem?

Cholerawasthemostdeadlydiseaseofitsday.Neitheritscause,noritscurewasunderstood.Whatcausedcholera?Detailsmakeupaquestion:Whichtheorytobelievein?idea1idea2Choleramultipliedintheair.Acloudofdangerousgasfloatedarounduntil

itfounditsvictims.Peopleabsorbeditwiththeirmeals.Paragraph2AmapofBroadStreetWhatmethoddidheuse?BroadStreetManydeathshappenedhere.Nodeathhappenedhere.Thewaterfromthepumpwastoblame.PublichouseParagraphs3+4analyzetheresults:Whathappenedtothepumpwater?ThewaterwasfromtheriverwhichhadbeenpollutedbythedirtywaterfromLondon.Paragraph5findsupportingevidence:Whatextraevidencedidhefind?twootherdeaths

Awomanandherdaughterwholivedfarawaybutdrankthewateralsodied.drawaconclusionwithcertaintyThepollutedwatercarriedthevirus.Paragraphs6+7Whatshouldwepayattentiontoinourdailylifeinordernottogetinfectedwithcholera?

HeatthefoodleftovernightCookrawfoodthoroughlyWashhandsoftenKeepawayfromflieschoosefreshseafoodKeepthekitchencleanDisposerubbishproperly.DrinkboiledwaterDiscussionReadthepassageagainandfillintheblanks:JohnSnowwasawell-known____inLondoninthe___century.Hewantedtofindthe______ofcholerainorderto______it.In1854whenacholera____out,hebegantogatherinformation.He_____onamapwhereallthedeadpeoplehadlivedandhefoundthatmanypeoplewhohaddrunkthedirtywaterfromthe______died.Sohedecidedthatthepollutedwatercarriedcholera.Hesuggestedthatthe_____ofallwatersupplybe_______andnewmethodsof________withpollutedwaterbefound.Finally,“KingCholera”wasdefeated.doctor19thcausedefeatbrokemarkedpumpsourceexamin