Great scientists,Unit 1,Period One Warming Up, Pre-reading & Reading,Warming Up,There are some great scientific achievements that have changed the world. Can you name some of them?,Do you know who discovered or invented the following things?,1. Which scientist discovered that objects in water are lifted up by a force that helps them float?,Archimedes,Its,2. Who wrote a book explaining how animals and plants developed as the environment changed?,Charles Darwin,Its used in the treatment of some diseases, especially cancer.,radium,Whats this?,3. Who discovered radium?,Marie Curie,4. Who invented the way of giving electricity to everybody in large cities?,Thomas Edison,5. Who was the painter that studied dead bodies to improve his painting of people?,Leonardo da vinci,6. Who invented the earliest instrument to tell people where earthquakes happened?,Zhang Heng,7. Who put forward a theory about black holes?,John Snow defeats “King cholera”,Reading,What can you learn from the title?,Who：What：,defeats cholera,Who is John Snow?,What happened to them?,Queen Victoria,John Snow 约翰斯诺(1813 1858), 英国麻醉学家、 流行病专家。他首次提出了预防霍乱的措施。1854年, 伦敦霍乱流行, 斯诺通过研究霍乱病死者的日常生活情况, 寻找到他们的共同行为模式,发现了霍乱与饮用不洁水的 关系, 由于及时切断了二者的联系, 有效制止了霍乱的 流行。,What was the cause of this illness? How did John Snow find it out?,1.What happened in 1854?2.How many people died in 10 days?3.Why was there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street?,Task 1:Skim and Scan,1. What happened in 1854 ?2. How many people died in 10 days?,Cholera outbreak hit London.,More than 500 people,3. Why was there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street?,These people worked in the pub at Cambridge Street and they had not drunk the water from the pump.,Careful Reading:(3m),John Snow was an doctor in London who Queen Victoria as her personal . He thought about helping ordinary people to cholera. Though the cause and the of it were unknown, he wanted to face the and solve the problem.,Para.1,expert,attended,physician,exposed,cure,challenge,Careful Reading:(3m),The two theories were:_.2. Which theory did John Snow believe in?,Paras.2&3,2) People absorbed cholera into theirbodies with their meals.,1) Cholera multiplied in the air.A cloud of dangerous gas floated around until it found its victims.,He believed in the second theory.,A map of Broad Street,What method did he use?,Broad Street,Many deaths happened here.,No death happened here.,The water from the pump was to blame.,Public house,Careful Reading:(5m),Paras.5 &6,True or False After looking into the source of the water for the two streets, John Snow had shown that cholera was spread in a cloud of gas but not by germs. The woman lived in Broad Street and she had delivered water from the pump to her house every day.,F,F,Careful Reading:,Which of the following is not the solutions to preventing the cholera from happening again? A. Remove the handle from the pump. B. The source of all the water supplies should be examined. C. The water companies were instructed not to expose people to polluted water any more. D. Cholera was spread by germs.,Para.7,Choose the best answers. 1. Whats the purpose of the text? A. To show us how difficult it was to find a cure for cholera. B. To tell us how John Snow found the cause of cholera and the cure for it. C. To show us how difficult it was to carry out experiments at that time. D. To tell us the way cholera spread and how serious it was.,2. What inspired John Snow according to the first paragraph?Being Queen Victorias personal physician. B. Finding where cholera happened. C. Helping ordinary people who suffered from cholera. D. Using his knowledge to help solve the problem.,3. What does “it” mean in the sentence?To help him find the number of dead people. B. To help him not lose his way. C. To help him find the reason of the cholera outbreak.,4. Which of the following is TRUE according to the text?John Snow became famous after cholera hit England in the 19th century. B. John Snow began to collect information long before cholera hit England in the 19th century. C. The mother and her daughter mentioned in the text both lived in Broad Street. D. John Snow felt unsure about the cause of cholera after he finished the map.,5. Why was cholera called “King Cholera” in the text? A. Because cholera caused many deaths. B. Because it got its name from Queen Victoria. C. Because cholera was the most deadly disease of its day. D. Because it was defeated with the help of the king.,What should we pay attention to in our dailylife in order not to get infected with cholera?,Discussion,Wash hands often,Keep away from flies,Keep the kitchen clean,Drink boiled water,