课件21张PPT。Section Ⅰ
Warming Up & Reading-Preparing预习多维感知?Step One:Ask and Discussion1.Who discovered that objects in water are lifted up by a force that helps them float?
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2.Who wrote a book explaining how animals and plants developed as the environment changed?
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3.Who discovered radium?
___________________________________________4.Who invented the way of giving electricity to everybody in large cities?
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5.Who put forward a theory about black holes?
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答案:1.Archimedes 2.Charles Darwin 3.Marie Curie 4.Thomas Edison 5.Stephen Hawking?Step Two:Fast Reading
1.Let the students read the text and then answer the following questions.
(1)Why couldn’t the cholera be under control at first?
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答案:Neither its cause nor its cure was understood.(2)Which theory did John Snow believe in?
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答案:People absorbed cholera into their bodies with their meals.(3)Why was there no death at No.20 and 21 Broad Street as well as at No.8 and 9 Cambridge Street?
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答案:These families had not drunk the water from the Broad Street pump.2.Scan the text and choose the best answer according to the text.
(1)What does the passage mainly talk about?
A.John Snow was a famous doctor in London.
B.The reason that caused the deadly disease cholera.
C.John Snow solved the problem of cholera.
D.Cholera was and is a serious deadly disease.(2)What was the original source of disease of “King Cholera”?
A.A cloud of dangerous gas.
B.The spreading of virus among people.
C.Water in a certain pump in London.
D.A river polluted by the dirty water.(3)Why did No.21 Broad Street in London have no deaths?
A.The people just drank the water from the pump.
B.They drunk beer as well as water from the pump.
C.They didn’t absorb the dangerous air.
D.They suffered no germs at all.(4)Which of the two theories that John Snow was interested in was true finally?
A.Both.
B.The first one.
C.The second one.
D.Neither.(5)What do you think the Londoners would do with the unused pumps after defeating“King Cholera”?
A.They would destroy them.
B.They would reuse them after cleaning.
C.They would desert them for good.
D.They would go on to use them without cleaning.
答案:(1)~(5)CDDDB?Step Three:Careful Reading
1.Let the students read the text carefully and then find out the main idea of each paragraph.
Paragraph 1:
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答案:Introduction of John Snow and choleraParagraph 2~3:
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答案:Two theories
Paragraph 4~6:
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答案:Study of the outbreak in 1854
Paragraph 7:
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答案:Prevention of cholera/John Snow defeated“King Cholera”2.Let the students listen to the tape and fill in the blanks.答案:(1)London (2)personal physician (3)meals (4)the polluted water (5)germs (6)many thousands of (7)two (8)the water pump?Step Four:Summary
John Snow-a doctor,1.____________ Queen Victory as her personal 2.____________.But he was willing to help ordinary people 3.____________ cholera.Many people died 4.____________ there was an 5.____________ .He wanted to face the 6.____________ and solve the problem.Two theories caught her attention.The first suggested that cholera
multiplied in the air.The second suggested that people 7.____________ this disease into their bodies and the disease 8.____________ the body.John Snow 9.____________ the second was right but heneeded evidence.When another outbreak hit London in 1854,he was ready to begin his 10.____________ and tried to get information.He found that most of the deaths were near a water pump and the spread of the disease was 11.____________ water.With the evidence,he was able to 12.____________ that polluted water carried the virus.After that,he suggested the source of all the water supplies 13.____________.Finally “King Cholera”was 14.____________.答案:1.attended 2.physician 3.exposed to 4.every time 5.outbreak 6.challenge 7.absorbed 8.attacked 9.suspected
10.enquiry 11.linked to 12.announce
13.be examined 14.defeated?Step Five: Discussion
Cholera was a 19th century disease.What disease do you think is similar to cholera today?Why?What should we do?
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答案:AIDS and H1N1 are similar to cholera today.Because they are serious,have an unknown cause and need public health care to solve them.We should wash hands with soap and clean water.We should form the good habit of going to bed early and getting up early.We should do more physical exercise.We’d better avoid going to crowded places,for example,Net bars and so on.