warming up & reading
What do you know about great scientists? Try this quiz and find out who knows the most.
1.Which scientist discovered that objects in water are lifted up by a force that helps them float?
Archimedes (Greek )
2.Who used peas to show how physical characteristics are passed from parents to their children?
Gregor Mendel Czech (捷克人)
3. Who discovered radium?
Marie Curie (Polish&French)
4.Who invented the earliest instrument to tell people where earthquakes happened?
Zhang Heng (Chinese)
5.Who put forward a theory about black hole? black hole
Stephen Hawking (British)
6.Who discovered Qinghaosu? Qinghao
Tu Youyou (Chinese)
John Snow defeats “King cholera”
John Snow defeats “king cholera”
What can you learn from the title? who： what：
He attended her as her personal physician
What is cholera?
Name of illness Symptom(症状) cholera (霍乱) severe vomiting (呕吐) and diarrhea (腹泻) die quickly from a loss of liquid
Skim the text and find the main idea of the text. The passage is mainly about:
A. why he is famous C. the cause of cholera B. his family
D. how he found out the cause
C. his personality
Read the passage quickly and find numbers and information related to
The first suggested that…multiplied
in the air; The second suggested…
absorbed this disease into their bodies
with their meals.
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.
John Snow's Cholera Map
16 pump 37 38 40
7 8 9
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?
Many deaths happened here. A map of Broad No death happened here.
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 germs.
Read the passage and number these events in the order that they happened.
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.
Read and answer the questions. 1. John Snow believed Idea 2 was right. How did he finally prove it?
KEY: John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.
2. Do you think John Snow would have solved this problem without the map? Give a reason.
KEY: No. The map helped John Snow organize his ideas. He was able to identify those households that had many deaths and check their waterdrinking habits. He identified those houses that had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.
3. Cholera was a 19th century disease. What disease do you think is similar to cholera today?
KEY: Four diseases, which are similar today, are SARS, AIDS, TB(肺结核) and bird-flu, because they are very serious, have an unknown cause and need public health care to solve them.
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 deal with rubbish properly
Heat the food left overnight
1. Prepare for dictation. 2. 阅读训练第一篇（P2 passage A）
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