1、Unit 1 Great ScientistsWhat impressed you most in 2003?SARS,an deadly infectious disease hit China.Which person impressed you most during the SARS?Zhong Nanshan (钟南山钟南山)John SnowBritish(1813 1858)a figure(人物人物)in the history of public health,epidemiology(流行病学流行病学)and anesthesiology(麻麻醉学醉学)John Snow
2、defeated“King cholera”What is Cholera?Cholera is the illness caused by a bacterium(细细菌菌)called Vibria cholerae(霍乱弧菌霍乱弧菌).It infects peoples intestines(肠肠),causing diarrhea(腹泻腹泻),vomiting(呕吐呕吐)and leg cramps(抽筋抽筋).Do you know how to prove a new idea in scientific research?eight stagesWhat order would
3、 you put them in?Make a conclusion Think of a method Collect results Make up a question Find a problem Analyse the results Repeat if necessary Find supporting evidenceJohn Snow defeats“King cholera”Whats the main idea of the passage?A.John Snow was a well-known doctor in London.B.The cause of Choler
4、a was polluted water.C.The source of all drinking water should be examined.D.How did John Snow collect,analyze the information,find the cause of the disease and solve it.What happened in 1854?How 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
5、Cambridge Street?Skim and Scan1.What happened in 1854?2.How many people died in 10 days?Cholera outbreak hit London.5003.Why is there no death 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.Put the correct stag
6、es into the reading about research into a disease.eight stagesFind a problem Make up a questionThink of a method Collect results Analyse the results Find supporting evidenceDraw a conclusion Repeat if necessaryPara.1:Para.2:Find a Problem:What caused the cholera?Make up a question:Which theory is ri
7、ght?Main ideas Para.3:Think of a method:Test two theories Para.4:Collect the result:Mark the death on a mapPara.5:Analyse the result:Find the source of the water Para.6:Find supporting evidence:Two other deaths Make a conclusion:Polluted water carried the diseaseParagraph 7:Prevention of Cholera Joh
8、n Snow defeated King CholeraDetailed readingWhat was this map used for in 1854?Finding out the cause of Cholera.Why couldnt the cholera be under control at first?Neither its cause,nor its cure was understood.Whats the two theories?Strange cloud in the air that attacked people.People absorbed the dis
9、ease with their meals.When the cause was found,what did the people do？Remove the handle from the water pump so it could not be used.What are John Snows suggestions?The source of all water supplies should be examined.New methods of dealing with polluted water should be found.The water companies were also instructed not to expose people to polluted water anymore.
