1、 There are some great scientists,whose scientific achievements have changed the world.Answer some questions chosen from the book.Who is he?He is Archimedes(阿基米德阿基米德)Which scientist discovered that objects in water are lifted up by a force that helps them float?Charles Darwin.Who is he?He is Who wrot
2、e a book explaining how animals and plants developed as the environment changed?Marie CurieWho is he?She is Who discovered radium?Thomas EdisonWho is he?He is Who invented the way of giving electricity to everybody in large cities?Stephen HawkingWho is he?He is Who put forward a theory about black h
3、oles?characteristicsHard-workingdeterminedenergeticcreativeambitiousintelligentpositivecooperativeJohn SnowDraw a conclusionThink of a methodCollect resultsMake a questionFind a problemAnalyse the resultsFind supporting evidencePlease put the 7 stages in right order according to the passage.Prove a
4、new idea?Listen to the text quickly and complete the main idea of it.The text is mainly about _ and how he _.Johndefeated choleraSnowRead the text carefully and fill in the blanks.Stage 1 Find a problemA large number of people died of cholera,but neither its _ nor its _ was understood.Stage 2 Make a
5、 question Theory one:Cholera _ in the air and floated around until it found its victims.Theory two:When people _ cholera into their bodies with meals,their bodies were attacked.cause absorbed multipliedcureStage 3 Think of a methodBegan to gather information to _ that the second theory was correct.S
6、tage 4 Collect resultsMarked where the dead people had lived on a(n)_.Stage 5 Analyse the resultsLooked into the _ of the water to see if the problem was the water.map provesourceThe water was from the river polluted by the dirty water from London.Broad StreetMany deaths happened here.No death happe
7、ned here.The water from the pump was to blame.Public houseStage 6Find supporting evidenceFound supporting evidence from two other deaths:Both of them died of cholera after _.Stage 7Draw a conclusion _ carried the virus.All the water supplies should be _.drinking the water Polluted waterexaminedextra
8、 evidence:A woman and her daughter who lived far away but drank the water also died.I.Number these events in the order that they happened._ John Snow began to test two theories._ An outbreak of cholera hit London in 1854._ John Snow marked the deaths on a map.124_ He announced that the water carried
9、 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.35678HomeworkDiscuss with your desk mate:What should you do if youre travelling to a country that has a cholera outbreak?
