人教版必修五Unit 1 Great scientist reading1课件（29张）.pptx

greatscientists unit1 johnsnowdefeats kingcholera reading 1 tosummarizeandrememberthemainideaofthepassage 2 tospeakoutthedetailedinformationofthepassage 3 toknowmoreaboutjohnsnowandhisachievements 4 tolearnsomeusefulwordsandexpressionsinthepassage objectives readingstrategy skimming scanning ageneralidea certaininformation titlesandheadings thefirstandlastsentencesofparagraphs thefirstandlastparagraphs picturesandcharts scanthetextforkeywordsandphrases dates etc donotneedtoreadthewholetext skimmingforgeneralidea afterreadingthepassage matchthefollowingstageswiththeparagraphs readingcomprehensioni skimming stages drawaconclusionthinkofamethodcollectresultsmakeaquestionfindaproblemanalyzetheresultsfindsupportingevidence findaproblem makeaquestion thinkofamethod collectresults analysetheresults drawaconclusion findsupportingevidence paragraphs stages firstweshouldfindtheproblem then thinkofamethod weshouldcollectasmuchinformationaspossible analyzingresultsisthemostimportantstage beforewemakeaconclusion itisnecessaryforustofindsupportingevidence summary what sthemainideaofthepassage a johnsnowwasawell knowndoctorinlondon b thecauseofcholerawaspollutedwater c thesourceofalldrinkingwatershouldbeexamined d howjohnsnowcollected analyseddataandfoundthecauseofthediseaseanddefeatedthedisease readingcomprehensionii skimming readingcomprehensioniii skimming readthepassagetofindthemainideaofeachparagraph johnsnowwantedtousehisknowledgetosolvecholera hegotinterestedintwotheories heneededtoprovethesecondtheorywascorrect hefoundoutthatdirtywaterwasthecauseofcholera para 1 para 2 para 3 para 4 para 6 para 7 pollutedwatercarriedthevirus finally kingcholera wasdefeated para 5 cholerawasspreadbygermsandnotinacloudofgas scanningforspecificinformation readthepassageandnumbertheseeventsintheorderthattheyhappened johnsnowbegantotesttwotheories anoutbreakofcholerahitlondonin1854 johnsnowmarkedthedeathsonamap readingcomprehensioniv scanning heannouncedthatthewatercarriedthedisease johnsnowinvestigatedtwostreetswheretheoutbreakwasverysevere kingcholerawasdefeated hefoundthatmostofthedeathswerenearawaterpump hehadthehandleremovedfromthewaterpump answer 21473856 readingcomprehensionv whycouldn tthecholerabecontrolledatfirst a itsspeedofspreadingwassofast b itscausewasn tunderstoodc itscurewasn tunderstood d bothb c scanning 2 howmanypeoplediedin10daysintwoparticularstreets a lessthan500 b morethan500 c morethan450 d lessthan450 3 whatattitudedidjohnsnowtaketothetwosupposedtheoriesexplaininghowcholeraattackedpeople a doubtfulbuthecoulddonothingaboutit b objectiveandheaskedhisassistantstogatherinformation c acceptableandhewassureaboutthecauses d reasonablebuttheyremainedtobeprovedscientifically 1johnsnowbelievedidea2wasright howdidhefinallyproveit johnsnowfinallyprovedhisideabecausehefoundanoutbreakthatwasclearlyrelatedtocholera collectedinformationandwasabletotiecasesoutsidetheareatothepollutedwater readingcomprehensionvi answerthesequestions scanning 2doyouthinkjohnsnowwouldhavesolvedthisproblemwithoutthemap giveareason no themaphelpedjohnsnoworganizehisideas hewasabletoidentifythosehouseholdsthathadhadmanydeathsandchecktheirwater drinkinghabits heidentifiedthosehousesthathadhadnodeathsandsurveyedtheirdrinkinghabits theevidenceclearlypointedtothepollutedwaterbeingthecause 3cholerawasa19thcenturydisease whatdiseasedoyouthinkissimilartocholeratoday why threediseases whicharesimilartoday aresars aidsandbirdflu becausetheyareserious haveanunknowncauseandneedpublichealthcaretosolvethem discussthequestioningroups groupwork whatshouldyoudoifyou retravellingtoacountrythathasacholeraoutbreak drinkonlywaterthatyouhaveboiled othersafedrinksincludeteaorcoffeemadewithboiledwater bottledbeverageswithnoice discussion eatonlyfoodthat sbeenthoroughlycookedandisstillhot orfruitthatyou vepeeledyourself avoidundercookedorrawfishandshellfish avoidrawsaladsandvegetables avoidfoodanddrinksfromstreetvendors johnsnowwasawell known inlondoninthe century hewantedtofindthe ofcholerainorderto it in1854whenacholera out hebegantogatherinformation he onamapwhereallthedeadpeoplehadlivedandhefoundthatmany doctor 19th cause defeat broke marked retellthetextbyfillinginthefollowingblanks peoplewhohad thedirtywaterfromthe died sohedecidedthatthepollutedwatercarriedthevirus hesuggestedthatthe ofallthewatersuppliesbe thewatercompanieswere nottoexposepeopletopollutedwateranymore finally