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语法填空John vSnow was a well-known doctor in London in the 19th

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语法填空
John vSnow was a well-known doctor in London in the 19th century.He thought about helping ordinary people(1)(expose)to cholera which was the deadly disease of its day.It is believed htat cholera is commonly caused by the bateria in he air or people(2)(absord)this disease into their bodies.(3)(suspect)that the second theory was correct,he made further investigation.He discovered that it was the water(4)was to blame.Next,John Snow looked(5)the sourse of the water for Broad Street (6)all the dead people had lived.(7)(fortunate),he found that it came from the river polluted by the dirty water from London.Immedately,he told the astonished people in Broad Street to remove(8)handle from the pump so that it could not be used.In (9)part of London,supporting evidance from two other deaths that were linked to the Broad Street outbreat was found by him,too .(10)this evidance ,John Snow was able to announce with certainty that polluted water carried the virus.Finally "king Cholera"was dafeated.
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