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(共30张PPT)
Unit 1 Science and Scientists
Reading and Thinking
John Snow Defeats “King Cholera”
By the end of this class, students will
1.Figure out the structure of the passage;
2.Master some important language points;
3.Get information about how John Snow defeated cholera;
Learning objectives:
“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”
“提出新的问题，发现新的可能性，
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。”
- 阿尔伯特·爱因斯坦”
④
Besides coronavirus, what other kinds of epidemics
（流行病）do you konw
bird-flu（禽流感）
malaria [m leri ]（疟疾）
plague[ple ɡ]
（鼠疫）
Ebola [ b l ] (埃博拉)
①
②
③
Who Helped Defeat Malaria
Lead in
Choleara
Add Something At Here
Add Something At Here
Add Something At Here
Add Something At Here
Add Something At Here
Add Something At Here
Cholera
loss of liquid (缺水)
severe vomiting (呕吐)
diarrhea (腹泻)
It begins in the stomach and a severe case can lead to death without immediate treatment.
Pre-reading
John Snow Defeats “King Cholera”
Who
How
What
Main idea: The text is mainly about ____________ and ______ he defeated ________________
John Snow
how
King Cholera
Activity 1: Read the whole text quickly and match the main idea
Para1
Para 2
Para 4
Para 5
D. John Snow desire to destroy cholera.
B. He decided to prove the second theory was correct.
A. John began his study by marking on the map.
E. Finally，he found out the truth of infection of cholera.
C. John Snow’s great contributions.
Para 3
Para. 1
1. draw a conclusion 得出结论
2. used to do过去常常做……
3. the most feared 最最令人害怕的
4. die from + 外因 死于...
die of + 内因(Para.3)
5. in time 及时
on time 准时;终于;迟早
6. attend to sb 照顾某人
7. lose one’s desire to do
失去做某事的欲望
8. once and for all 最终地;彻底地
Key Phrases
While-reading
Read for the imformation.
Para 1 Who & What
John Snow
Cholera
a ______________________ doctor
became _________
never ________________________ _________ once and for all
British, young and famous
_____________ Queen Victoria
attended to
frustrated
lost his desire to destroy cholera
one of __________________diseases
causes severe _____________ _________________________
millions of people __________
the disease in the early 19th century
the most feared
diarrhoea, dehydration and even death
died from
Key Phrases
Para. 2
9. in general 总而言之，一般来说
10. two contradictory theories
两种截然不同的理论
11. an infection from germ 细菌感染
12. subscribe to同意;赞同
13. more than 多于；超出；比……多
14. be determined to do sth
决定做某事
Activity 2 Find the seven stages in Para.2 & 3
Para.2
Stage 1 find a problem
contradictory
Two contradictory theories
Theory one:
caused by ________
Theory two:
caused by _______
Symptoms
Symptoms
cough
sneeze
runny nose
lung
diarrhoea
dehydration

bad air
germs
Snow subscribed to the second theory.
Para. 2
Find a problem
Activity 2 Find the seven stages in Para.2 & 3
Para.2
Stage 2 ask a question
investigate
Para. 3
15. mark ... on a map
把……标记在地图上
16. multiple death 多例死亡
17. such as + 名词/代词/名词短语
18. be to blame (for) 应受责备
19. what’s more 除此之外;还
20. die of 死于...
21. move away from
从…离开;抛弃;离开
22. It seems/seemed that ...
仿佛;好像
Key Phrases
23. deliver to
交付；传达；转交；运输
24. as a result of 由于;因此
25. in one’s track 在...的轨道上
3.Think of a method
4.Collect data
5.Analyse the results
6.Find supporting evidence
7.Draw a conclusion
8.Find a solution
Read for the stages.
Draw a conclusion
Collect data
Ask a question
Find a problem
Analyse the results
Find supporting evidence
Think of a method
What order would you put them in
Find supporting evidence & Draw a conclusion
Pump water carried the cholera germs.
Two typical deaths
Place
Person
Event
In another part of London
A woman and her daughter
Died of cholera because of drinking the water delivered from the pump
Remove the handle of the pump
The disease was stopped.
Para. 5
30. through sb’s tireless/ intense
efforts通过某人不懈的努力
31. the threat of ... ......的威胁
32. a substantial decrease急剧下降
33. thanks to幸亏;由于
34. for this reason 为此；正因如此
35. be considered as/ (to be)
被认为/看作是……
Key Phrases
Para. 4
26. be infected by 被...感染
27. a link between A and B
A和B之间的联系
28. be likely to do sth.可能做某事
29. pure and boiled water
纯浄水或开水
Para. 4-5
Activity 3 Read for detailed information in Para.1
What It's one of in the world, because it causes
When
Where
What results
the most feared diseases
severe diarrhoea, dehydration
In the early 19th century
Europe
Millions of people died from the disease
Cholera
and even death.
The_______ of the pump was removed.
E
Activity 3 Read for detailed information in Para.2 & 3
It was believed that cholera was caused by _______ or germs in _____________.
A
Snow __________
_______the places where people who
_____ had lived.
B
bad air
food or water
marked on
died
The pump water carried____________.
D
cholera germs
handle
a map
Steps in the research
Many deaths occurred
near the __________
in Broad Street.
Some people _______
drunk the water from
the pump, and lived.
A woman and her
daughter died in another part of London after ____________ ______________.
C
water pump
had not
from the pump
drinking water
The_______ of the pump was removed.
E
Activity 3 Read for detailed information in Para.2 & 3
It was believed that cholera was caused by _______ or germs in _____________.
A
Snow __________
_______the places where people who
_____ had lived.
B
bad air
food or water
marked on
died
The pump water carried____________.
D
cholera germs
handle
a map
research method
Many deaths occurred
near the __________
in Broad Street.
Some people _______
drunk the water from
the pump, and lived.
A woman and her
daughter died in another part of London after ____________ ______________.
C
water pump
had not
from the pump
drinking water
theories
process
evidence
conclusion
solution
conclusion evidence process solution theories
Activity 3 Read for detailed information in Para.4 & 5
1. What caused the outbreak of cholera in London
A. Bad air B. Water infected by raw waste
C. Polluted air D. Water polluted by the air
2.Why was John Snow called the father of modern epidemiology(流行病学）
He helped people know how to prevent cholera.
He transformed the way scientists study diseases in use of map and statistics.
In order not to get infected with disease, what should we pay attention to in our daily life.
Drink boiled water.
Remember to wear a mask when going out.
Heat the food left overnight.
Wash your hands often.
Cook raw food thoroughly.
Deal with rubbish timely and properly.
Post-reading
In the early 19th century, an outbreak of cholera hit Europe, _
(cause) millions of deaths. Seeing this, John Snow became frustrated because no one knew how _________ (prevent) or treat cholera. At that time, doctors had two theories to explain how cholera spread. One was that bad air caused the disease and another was that cholera was caused by germs in food or water. John discovered that in two particular street _____ cholera outbreak was ____ severe that over 500 people died in ten days. Through his serious ____________ (investigate), he found it was the pump water in Broad Street _______ resulted in the disease.
Fill in the blank
causing
to prevent
the
so
investigation
that
Therefore, he had the handle of the pump ________ (remove) .It turned out that the water from the pump _______________ (infect) by waste. Through Snow's tireless efforts, water companies began to sell clean water, and the threat of cholera around the world saw ____ substantial decrease. Snow transformed the way ________________ scientists study diseases. For this reason, he is considered the father of modern epidemiology.
had been infected
a
that/in which
Fill in the blank
removed
Thank you

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