新人教版英语高二上module5unit1greatscientists之六

新人教版英语高二上module5unit1greatscientists之六内容摘要：

as well as at No. 8 and 9 Cambridge Street? John Snow Another Cholera outbreak hit London. These families had not drunk the water from the Broad Street pump. two Steps: What/How? a problem up a question of a method results John Snow Defeats “King Cholera” What causes cholera? Which theory is correct? Gather information when another Cholera hit London in 1854. He marked on a map where all the dead people had lived. 6. Find supporting evidence a conclusion results Looked into the source of the water. Two other deaths. The water is to blame. The source of all drinking water should be examined. 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 attacked people. people absorbed the disease with meals gather information from cholera outbreak The results Idea 1 or 2? Why? The conclusion He found the cause of cholera was the polluted water Idea 2. Because the information showed that the dirty water carried cholera He def。