unit1greatscientists必修5内容摘要：
re ill or died and where they got their water Mark information on a map to find out where people died or did not died if necessary a conclusion results Analyse the water to see if that is the cause of the illness Find other evidence to make sure the conclusion The water is to blame. The source of all drinking water should be examined. Read the passage again and finish Ex. 1(Page 3). (in 8 minutes) John Snow Defeats “King Cholera” Scientific Report by John Snow The problem The cause Idea 1: Idea 2: The method Nobody knew the cause of the serious disease of cholera a strange cloud of gas found its victims people absorbed the disease with meals Collect information from the cholera outbreak to prove wh。阅读剩余 0%
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