Unit 1 Science and Scientists Reading and Thinking 课件-2022-2023学年高二上学期英语人教版（2019）选择性必修第二册

To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science. —Albert Einstein & Leopold Infeld 提出新的问题，发现新的可能，从新的角度审视已存在的问题，这些需要创造性的想象力，并标志着科学的真正进步。 JOHN SNOW DEFEATS（打败） “KING CHOLERA（霍乱）” Reading skill: What can you learn from the title and the pictures? John Snow Defeats “King Cholera” What is the text about? Why is it called “King Cholera”？ How to read the map? 3 John Snow, (born March 15, 1813, York, Yorkshire, England—died June 16, 1858, London), English physician known for his seminal studies of cholera and widely viewed as the father of contemporary epidemiology. 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（严重的） diarrhoea（腹泻）, dehydration（脱水）, and even death. In the early 19th century when an outbreak（爆发） of cholera hit Europe, millions of people died from the disease. 常考：used to do 过去常常 be used to doing习惯于 As a young doctor John Snow became frustrated（沮丧的） because no one knew how to prevent（预防） or treat （治疗）cholera. In time, he rose to become a famous doctor and even attended（照顾） to Queen Victoria when she gave birth. However, he never lost his desire（欲望） to destroy cholera once and for all.(一劳永逸） In general doctors in those days had two contradictory（相反的） theories（理论） to explain how cholera spread（扩散）. One theory was that bad air caused the disease. Another was that cholera was caused by an infection（感染） from germs（细菌） in food or water. Snow subscribed to（同意） the second theory. It was correct(正确的）, but he still needed proof（证据）. Consequently（因此）, when an outbreak at cholera hit London in 1854, Snow began to investigate（调查）. He discovered（发现） that in two particular（特别的） streets the cholera outbreak was so severe that more than 500 people died in ten days. He was determined(坚定的） to find out why. 常考：so +adj(形容词）+ that 如此......以致于 Snow began by marking（做标记）