Unit 1 Reading and Thinking 3 课件-2023-2024学年高中英语人教版（2019）选择性必修第二册

Unit 1 SCIENCE AND SCIENTISTS Learning Objectives Find out the stages of scientific research in this passage. Learn about John Snow’s research process. Express your ideas on the given topic through creative thinking. 2 While-reading Read for the imformation. Para 2&3 How? Any other evidence? What result did he get? Snow suspected that the water pump was to blame. A woman and her daughter died in another part of London after drinking water from the pump. John Snow was able to announce that the pump water carried cholera germs. John Snow had the handle of the pump removed. The disease was stopped. The truth was that the water from the Broad Street pump had been infected by waste. Moreover, Snow was later able to show a link between other cases of cholera and the different water companies in London. Some companies sold water from the River Thames that was polluted by raw waste. The people who drank this water were much more likely to get cholera than those who drank pure or boiled water. Read the Para 4 and find the complex sentences and useful phrases. 【 】 【 】 【 】 【 】 2023/11/4 4 Through Snow’s tireless efforts, water companies began to sell clean water and the threat of cholera around the world saw a substantial decrease. However, cholera is still a problem. Each year, millions of people around the world get cholera and many die from it. Fortunately, we now know how to prevent cholera, thanks to the work of John Snow. Moreover, in his use of maps and statistics, Snow transformed the way scientists study diseases. For this reason, Snow is considered the father of modern epidemiology. Read the Para 5 and find the complex sentences and useful phrases. 【