资源简介

(共23张PPT)
Unit 1 Science and Scientists
Reading and Thinking
John Snow Defeats “King Cholera”
Lead in

Are you familiar with these situations
Run nucleic acid tests
Get vaccinated
Self-isolation
/ a s le n/
/ v ks ne t d/
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
Look at the title and guess what the passage is going to tell us.
John Snow Defeats King Cholera
Who is John Snow？
What is King Cholera
John Snow DefeJohn Snow, (born March 15, 1813, York, Yorkshire, England—died June 16, 1858, London), English physician known for his seminal studies of cholera and widely viewed as the father of contemporary epidemiology.ats King Cholera
John Snow, (born March 15, 1813, York, Yorkshire, England—died June 16, 1858, London), English royal physician known for his seminal studies of cholera and widely viewed as the father of contemporary epidemiology.
What is King Cholera
A disease that is extremely deadly and has great power.
John Snow Defeats King Cholera
Prediction
How
found the cause of cholera
defeated cholera
Why the simple present tense is used in the title
Describe what has happened:
to make the readers feel like they are in the middle of the scene.
What will be talked about according to the title
John Snow Defeats“King Cholera”
Who
打败，战胜How
What
1. Who was John Snow
2. What is King Cholera
3. How did John Snow defeat King Cholera
Read the whole text quickly and match the main ideas.
Para. 1
Para. 2
Para. 4
Para. 5
John Snow desired to destroy cholera.
John Snow decided to prove the second theory.
Snow began his study by marking on the map.
Truth of the infection of cholera.
Snow's contributions.
Para. 3
read for the details
the imformation cards
Para 1 Who & What
John Snow
(nationality, occupation and
desire)
Cholera
(identity, symptoms and consequence)
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
read Para.2 & 3 , finish exercise 3 on Page 3(flow chart)
Para.2
contradictory
to agree with or support an opinion, a theory, etc.
proof
subscribe to
A map of Broad Street-”Cholera Map”
What method did Snow use
A map of Broad Street-”Cholera Map”
Which houses had more than 4 deaths in Broad Street
Which houses had no death in Broad Street
Multiple deaths happened here.
No death happened here.
He suspected that the water from the pump was to blame.
Think of a method & Collect data & Anayse the results
Para.3
Find supporting evidence & Draw a conclusion
Pump water carried the cholera germs.
Two 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. 3
A: It was believed that cholera was caused by bad ____ or germs in _______________.
B:Snow___________________the places where the people who _____ had lived
C: 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 ___________
_____________.
D: The pump water carried
____________.
conclusion
evidence
E: The _______ of the pump was removed.
process
solution
handle
theories
air
food or water
marked on the
died
water pump
hadn’t
drinking water
cholera germs
Check the answers on Page 3.
conclusion evidence process solution theories
map
from the pump
Para. 4-5
Write out the questions according to the answer.
A:Snow thought that cholera was caused by germs in food or water.
A:Snow had the handle of the pump removed so that it could not be used.
01
02
Q:What
Q:Why
Ask questions
One way to approach a reading passage is to ask questions about it.Asking questions can help you understand the content .It can also help you think more deeply about the topic.
did John Snow think caused
the cholera
did John Snow have the handle
from the pump removed？
Write out the questions according to the answer.
A:The cholera threat was defeated thanks to the work of John Snow.
03
Q:How
Why
Ask questions
One way to approach a reading passage is to ask questions about it.Asking questions can help you understand the cotent .It can also help you think more deeply about the topic.
was the cholera
Discuss in group
Cholera was a 19th century disease.
What disease do you think is similar to cholera today
1
2
3
4
SARS
AIDS
TB 肺结核
Bird-flu
Post-reading
Fill in the blanks according to the text.
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. Therefore, he had the handle of the pump ________ (remove) .
causing
to prevent
the
so
investigation
that
removed
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.
Fill in the blanks according to the text.
had been infected
that / in which
a

展开更多......

收起↑