Book 5 Unit 1 Great Scientists 自主预习学案教师寄语:An idle youth, a needy age
少壮不努力,老大徒伤悲
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Read the passage John Snow Defeats “King ” and answer the following questions
What does the passage mainly talk about
John snow was a famous doctor in London
The reason that caused the deadly disease cholera
John Snow solved the problem of cholera
Cholera was and is a serous deadly disease
What was the original source of disease of “King Cholera”
A cloud of dangerous gas
The spreading of virus among people
Water in a certain pump in London
A river polluted by the dirty water
Why did No
21 Borad Street in London have no deaths
The people just drank the water