1、 To raise new questions, new possibilities, to regard old problems om a new angle, requires creative imagination and marks real advance in science. - Alber Einstein & Leopold Infeld JOHN SNOW DEFEATS JOHN SNOW DEFEATS “ KING CHOLERA”“ KING CHOLERA” 人教2020 选择性必修二 draw a conclusion find a problem make
2、 up a question think of a method collect results analyse the results Find supporting evidence draw a conclusion think of a method collect results make up a question find a problem analyse the results Find supporting evidence 7 stages in right order Read the first paragraphRead the first paragraph010
3、1 What is Cholera? Cholera used to be one of _in the world . It infects peoples intestines(肠肠), causing diarrhea(腹泻腹泻), dehydration and even death. John Snow rose to_ in London. So _(技艺精湛的），技艺精湛的），indeed, that he even _ Queen Victoria when she gave birth. the most feared diseases become a famous doc
4、tor skilledattend to What happened in 1854? How many people died in 10 days? Cholera outbreak hit London. 500 Read the second paragraphRead the second paragraph0202 3. Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street? 4.When Snow _, cholera was at an end
5、. These families had not drunk the water from the Broad Street pump. Read the third paragraphRead the third paragraph0303 had the handle of had the handle of the pump removedthe pump removed Read the passage again and complete the chart below. It was believed that It was believed that olera was caus
6、ed by olera was caused by bad _ or bad _ or germs germs in_.in_. Snow_ the Snow_ the places where the places where the people people who_had who_had lived.lived. Many deaths occurred Many deaths occurred near the near the _in Broad _in Broad Street.Street. Some Some people_people_ drunk the water fr
7、om drunk the water from the pump , and lived.the pump , and lived. A woman and her A woman and her daughter died in daughter died in another part of London another part of London after_.after_. The pump water The pump water carried_carried_ _._. The The _of _of the pump was removed.the pump was remo
8、ved. theoriestheories evidenceevidence processprocess conclusionconclusion solutionsolution airair food or food or waterwater markedmarked dieddied water pumpwater pump had nothad not moving away from Broad moving away from Broad StreetStreet cholera germscholera germs handlehandle Think it overThin
9、k it over0404 4 How has John Snow s work affected our daily lives? His work can protect people from being His work can protect people from being killed by the severe disease. killed by the severe disease. Furthermore, it told us we should Furthermore, it told us we should protect our environment fro
10、m being protect our environment from being polluted.polluted. Fill in the blanks according to the text. One word for one Fill in the blanks according to the text. One word for one blank or give the proper forms of the given words.blank or give the proper forms of the given words. In the early 19ty c
11、entury, an outbreak of cholera hit Europe, and millions of people died from the disease. However, no one knew how _(prevent) or treat cholera. John Snow, a British doctor, had a strong desire to destroy cholera once and for all. At that time, there were two _(contradict) theories to explain how chol
12、era spread. One theory was that bad air caused cholera. The other was that cholera_(cause) by an infection from germs in food or water. Snow subscribed to the latter. He needed _(prove) to prove that it was correct. In 1854, an outbreak of cholera_(strike) London. to preventto prevent contradictoryc
13、ontradictory was causedwas caused proofproof struckstruck Snow began to invesstgate. He discovered that the cholera Snow began to invesstgate. He discovered that the cholera outbreak was very severe in two particular streets. He marked on a outbreak was very severe in two particular streets. He mark
14、ed on a map the exact places_ all those who died had lived, map the exact places_ all those who died had lived, only to find that multiple deaths were near the water pump in Broad only to find that multiple deaths were near the water pump in Broad Street. Snow suspected that the water pump was to bl
15、ame. Besides, a Street. Snow suspected that the water pump was to blame. Besides, a woman and her daughter in another part of London died of cholera woman and her daughter in another part of London died of cholera after they drank the water_ the pump. As a result of after they drank the water_ the p
16、ump. As a result of this evidence, John Snow drew a conclusion that the pump water this evidence, John Snow drew a conclusion that the pump water carried cholera germs. After he had the handle carried cholera germs. After he had the handle _(remove) from the pump, cholera was stopped in its _(remove
17、) from the pump, cholera was stopped in its tracks.tracks. Through Snows tireless efforts, the treat of cholera Through Snows tireless efforts, the treat of cholera saw_substantial decrease. Moreover, in his use of maps and saw_substantial decrease. Moreover, in his use of maps and statistics, Snow
18、transformed the way statistics, Snow transformed the way _(scientist )study diseases. John Snow is _(scientist )study diseases. John Snow is considered the father of modern epidemiology.considered the father of modern epidemiology. wherewhere fromfrom removedremoved a a scientistsscientists What con
19、ditions allowed cholera to develop?What conditions allowed cholera to develop? Pay little attention toPay little attention to Public health Personal hygiene 词块积累 1. one of the most feared diseases1. one of the most feared diseases 2. never lose the desire to do sth2. never lose the desire to do sth
20、3. in general3. in general 4. once and for all4. once and for all 5. mark on a map the exact places5. mark on a map the exact places 6. move away from6. move away from 7. have sth. delivered to the house7. have sth. delivered to the house 8. be stopped in ones tracks8. be stopped in ones tracks 9.through ones tireless efforts9.through ones tireless efforts 10. a man with great scienific thought and scientific spirit10. a man with great scienific thought and scientific spirit Thank You！
