Unit 1 Reading and Thinking 2 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 Learn about John Snow and cholera. Build up vocabulary in the context. 2 Para 1-3 While-reading Read for the imformation. Para 1 Who & What ? John Snow Cholera a ______________________ doctor became _________ never ________________________ _________ once and for all British, young and famous _____________ Queen Victoria attended to frustrated lost his desire to destroy cholera one of __________________diseases causes severe _____________ _________________________ millions of people __________ the disease in the early 19th century the most feared diarrhoea, dehydration and even death died from Read for the imformation. Para 2&3 How? 1. What problem did the two theories try to solve? To explain how Cholera spread. 2. What were the two theories and which did John Snow agree with? Two contradictory theories Theory one: caused by ________ Theory two: caused by _______ bad air germs Snow subscribed to the second theory. ✔ problem Read for the imformation. Para 2&3 How? 3. What’s the proof he found? question While-reading Read for the imformation. Para 2&3 How? What method did he use? How did he finally find out why? marking on a map Analyze the map with your group member. Which houses had more than 4 deaths in Broad Street? Which houses had no death in Broad Street? Read the Para 1 and find the complex sentences and useful phrases. Cholera used to be one of the most feared diseases in the world, until a British doctor, John Snow, showed how it could be overcome. This illness causes severe diarrhea , dehydration, and even death. In the early 19th century, when an outbreak of cholera hit Europe, millions of people died from the disease. As a young doctor, John Snow became frustrated because no one knew how to prevent or treat cholera. In time, he rose to become a famous doctor, and even attended to Queen Victoria when she gave birth.