（2019版）新人教版选择性必修第二册Unit 1Science and scientistsReading and thinking ppt课件.pptx

1、 ？ John Snow Defeats “King Cholera”1.Whats the main idea of the passage?A.The cause of cholera was polluted water.B.John Snow was a well-known doctor in London.C.The source of all drinking water should be examined.D.John Snow did some research and helped to solve “King Cholera”.”.2.Read the passage

2、and match the main idea of each paragraph.Para.1A.Snow collects information and offers solutions.Para.2 B.Snow desires to defeat cholera.Para.3 C.Snow is determined to investigate.Para.4 D.John Snow is the father of modern epidemiology.Para.5 E.Snow finds the truth of cholera.Read the passage carefu

3、lly and choose the best answer.1.Which of the following theories did John Snow believe in?A.Bad air caused the disease.B.People absorbed cholera into their bodies with their meals.C.People got infected with cholera because of cold and hunger.D.People suffered from cholera because they were not clean

4、.2.What was the key to help for John Snows discovery?A.The government.B.The woman who had moved away from Broad Street.C.The water company.D.The map made by himself.3.At last，“King Cholera” was controlled by .A.using medicines in hospitalB.driving patients out of the countryC.dealing with the pollut

5、ed waterD.getting rid of all kinds of pollution4.What conclusion did John Snow draw according to the evidence?A.Cholera multiplied in the water.B.Polluted water carried the virus.C.A cloud of dangerous gas caused cholera.D.Cholera could never be controlled even though its cause was found.5.Where doe

6、s this text probably come from?A.A newspaper.B.A medical report.C.A book review.D.A TV interview. John Snow Defeats “King Cholera” Cholera 1 (use) to be one of the most feared diseases in the world, until 2 British doctor, John Snow, showed how it could be overcome. This illness causes severe diarrh

7、oea, dehydration, and even death. In the early19th century, when an outbreak of cholera hit Europe, millions of people died 3 the disease. As a young doctor, John Snow became 4 (frustrate) because no one knew how 5 (prevent) or treat cholera. In time, he rose to become a famous doctor, and even atte

8、nded 6 Queen Victoria when she gave birth.However, he never lost his desire to destroy cholera once and for all. In general,doctors in those days 7 (have) two contradictory theories to explain 8 cholera spread. One theory was 9 bad air caused the disease. Another was that cholera 10 (cause) by an in

9、fection from germs in food or water. Snow subscribed to 11 second theory. It was correct, but he still needed proof. 12 (consequent), when an out break of cholera hit London in 1854, Snow began to investigate. He discovered that in two particular streets the cholera outbreak was 13 severe that more

10、than 500 people died in ten days. He was determined to find out why. Snow began by 14 (mark) on a map the exact places where all those 15 died had lived. There were multiple deaths near the water pump in Broad Street (especially house numbers 16, 37, 38, and40). However, some households (such as 20

11、and 21 Broad Street, and 8 and 9 Cambridge Street) had had no deaths.These people worked in the pub at 7 Cambridge Street. They had been given free beer, and so had not drunk the water from the pump. Snow suspected that the water pump was 16 (blame). What is more, in another part of London, a woman

12、and her daughter had died of cholera after 17 (move) away from Broad Street. It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day. As 18 result of this evidence, John Snow was able 19 (announce) that the pump water carried cholera germs. Acc

13、ordingly, he had the handle of the pump 20 (remove) so that it could not be used. Through this intervention, the disease was stopped in 21 (it) tracks. The truth was 22 the water from the Broad Street pump had been infected by waste. Moreover, Snow was later able to show a link 23 other cases of cho

14、lera and the different water companies in London. Some companies sold water from the River Thames 24 was polluted by raw waste. The people who drank this water were much more likely 25 (get) cholera than those 26 drank pure or boiled water. Through Snows tireless efforts, water companies began to se

15、ll 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. 27 (fortunate), we now know how 28 (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.