1、Unit 1 Great ScientistsSARS, 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(麻醉麻醉学学) Do you know how to prove a new ide
2、a in scientific research?eight stagesWhat order would 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 evidenceWhat is Cholera? Cholera is the illness caused by a bacterium(细菌细菌) called Vibri
3、a 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) . John 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 Cholera was polluted water.C.The source of all drin
4、king 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 Cambridge Street?Skim and Scan1. What
5、 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 stages into the reading about resear
6、ch into a disease. Para. 1: Para. 2: About choleraWhich theory is right?Main ideas Para. 3: Test two theoriesPara. 4: Mark the death on a mapPara. 5: Find the source of the water Para. 6: Find supporting evidence:Two other deaths Polluted water carried the diseaseParagraph 7: Prevention of Cholera J
7、ohn 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 t
8、he disease 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.
