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高中英语人教版 (2019)选
择性必修第二册
Unit 1 Science And Scientists
Reading and Thinking
课文原文
JOHN SNOW DEFEATS “ KING CHOLERA”
Cholera used to be one of the most feared diseases in the world, until a British doctor. John
Snow, showed how it could be over℃ome. This illness causes severe diarrhoea, dehydration, and
even death. In the early 19th century, when an outbreak of cholera hit Europe, millions of people
r
died from the diseas巳. As a young doctor, John Snow became f ustrated because no on巳 knew how
to prevent or tTeat cholera. In time, he rose to become a famous doctor, and even attended to Queen
Victoria when she gave birth. However, he never lost his desire to destroy cholera once and for all.
ln general, doctors in those days had two contradictory th巳ories to explain how cholera spread.
One theory was that bad air caused the disease. Another was that cholera was caused by an infection
r
from germs in food or water. Snow subscribed to the second theory. It was cor ect, but he still
need巳d proof. Cons巳quently, when an outbreak of cholera hit London in 1854, Snow began to
investigate. He discovered that in two particular streets the cholera outbreak was so severe that
more than 500 people died in ten days. He was determined to find out why.
Snow began by marking on a map the exact places where all those who died had lived. There
were multiple deaths near the water pump in Broad Street (especially house numbers 16, 37,
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