高中英语人教版必修5 Unit 1 John Snow defeated king cholera Reading_图文

Unit 1

GreatUnit Scientists
Reading

Warming--up
1.Recently, what disease is spreading around our country, especially GuangDong Province ?

Dengue Fever

What other infectious diseases do you know?

Bird flu, AIDS, SARS, H1N1,Ebola…
When you eat some food that is not fresh……

You may feel…

Maybe you have Cholera got ________.



What is Cholera?
Cholera is the illness caused by a bacterium called Vibrio cholerae(霍乱 弧菌). It infects people’s intestines (肠), causing diarrhea (腹泻), vomiting(呕吐) and leg cramps(痉 挛). The most common cause of cholera is by someone eating food or drinking water that has been infected with the bacteria.

1.Whether you are right or wrong?
2.You need to prove your idea in scientific research.
draw a conclusion think of a method collect results make a question find a problem analyse the results find supporting evidence

find a problem

Put the following Stages in order draw a conclusion think of a method collect results make a question find a problem analyse the results find supporting evidence

make a question

think of a method
collect results analyse the results

find supporting evidence
draw a conclusion

John Snow defeats “King cholera”

What can you learn from the title?

人物: 事件:

defeats cholera

Listening : Listen to the text and find the main idea of the text. The passage is mainly about: How John Snow found the cause of _______________________________ the cholera and defeated it. ________________________

Fast—reading:

Read the passage quickly and find the

number below and the relevant(相关的)
happenings in the passage. Two theories In 1854 500 , 10 16, 37, 38 and 40 20, 21; 8, 9 7

The first suggested that…multiplied Two theories

in the air; The second suggested…
absorbed this disease into their bodies

with their meals. In 1854
Another outbreak hit London.

500 , 10

More than 500 people had died in 10 days.

16, 37, 38 and 40 20, 21; 8, 9

These numbers in Broad Street near the water pump had many of the deaths
20 and 21 Broad Street and 8 and 9 Cambridge Street had no deaths…. They didn’t drink the water from the Broad Street pump. These families worked in the pub at 7 Cambridge Street.

7

Careful—reading:
What is the problem?
The cholera was the most deadly disease of its day. Neither its cause, nor its cure was understood.

What caused cholera?

Make a question: Which theory to believe in?
Cholera multiplied in the air without reason. A cloud of dangerous gas would float around until it found its victims. People absorbed it with their meals.

Which one do you believe more? What about John Snow?

What method did he use?
Public house

Many deaths happened here. A map of Broad No death happened here.

Street

It seemed the water from the pump was to blame. What did he do next?

(Para 5) He looked into the source of the water…
(Para 6) What was another supporting evidence?

John Snow was able to announce with certainty that polluted water carried the virus.

Match them
Para 1 Para 2 Para 3 Para 4
Para 5

find a problem make a question
think of a method

collect results
analyse the results repeat if necessary draw a conclusion
Prevention of Cholera

Para 6
Para 7

Discussion
Drink boiled water Wash hands often What should we pay attention to in our daily life in order not to get infected cholera? Keep with away from flies choose fresh sea food

Keep the kitchen clean
Cook raw food thoroughly Dispose rubbish properly.

Heat the food left overnight

Careful—reading:
Read the passage and number these events in the order that they happened.

2

John Snow began to test two theories.

1 An outbreak of cholera hit London in 1854. 4 John Snow marked the deaths on a map. 7 He announced that the water carried the disease.

3 8 5 6

John Snow investigated two streets where the outbreak was very severe.
King Cholera was defeated. He found that most of the deaths were near a water pump. He had the handle removed from the water pump.


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