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1、Great scientistsWords and expressionsPre-ReadingPre-ReadingFind supporting evidence a serious infection of the bowels caused by drinking infected water or eating infected food, causing diarrhoea（腹泻）（腹泻）, vomiting呕吐呕吐 and often death.ReadingReading Who defeats “King Cholera“? What happened in 1854? H
2、ow many people died in 10 days? Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street?Task 1:Skim and Scan1.Who defeats “King Cholera“?2. What happened in 1854?3. How many people died in 10 days?John SnowCholera outbreak hit London.5004. Why is there no death
3、 at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street?These families had not drunk the water from the Broad Street pump.Task 2Read and answerNumber these events in the order they happened._ John Snow began to test two theories._ An outbreak of cholera hit London n 1854._ John Sno
4、w marked the deaths on a map._ He announced that the water carried the disease._ John Snow investigated two streets where the outbreak was very severe._ King Cholera was defeated._ He found that most of the deaths were near a water pump._ He had the handle removed from the water pump.12345678Revisio
5、n 2Draw a conclusionFind a problemMake up a questionThink of a methodCollect resultsAnalyse the resultsPara 1Para 2Para 3Para 4Para 5Para 6Match themAnalyse resultsPara 7Read the text paragraph by paragraph to get details.1. What was the most deadly disease in 19th century? Why?2. When could the cho
6、lera be controlled?The cholera, because neither its cause, nor its cure was understood.John Snow knew it would never be controlled until its cause was found.What is the problem?The cholera was the most deadly disease of its day. Neither its cause, nor its cure was understood.What caused cholera?Deta
7、ils Make a question: Which theory to believe in? Cholera multiplied in the air, floated around until it found its victims.People absorbed it with their meals. Idea 1 Idea 2A map of Broad StreetWhat method did he use?Broad StreetMany deaths happened here.No death happened here.The water from the pump
8、 was to blame.Public houseAnalyze the results: What happened to the pump water?The water was from the river which had been polluted by the dirty water from London.Find supporting evidence: What extra evidence did he find? A woman and her daughter who lived far away but drank the water also died.Draw a conclusion with certaintyThe polluted water carried the disease.