求高二英语必修5第一篇阅读John Snow defeats"King Cholera"课后题目3的小结参考

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求高二英语必修5第一篇阅读John Snow defeats"King Cholera"课后题目3的小结参考

John Snow wanted to find the cause of cholera.He believed that people became ill after eating infected food.He used the next outbreak of cholera to test his idea.He studied a small area of houses whic...