Task 2:Comprehending

The problem The cause Idea 1:

Idea 2: The method The results 　　

　　续表

Idea 1 or 2?Why? The conclusion

　　Step 3:Post-reading

　　Summary:

　　John Snow was a well-known 　　　in London in the 　　　century.He wanted to find the 　　　of cholera in order to help people 　　　to cholera.In 1854 when a cholera 　　　out,he began to gather information.He 　　　on a map where all the dead people had lived and found that many people who had drunk the dirty water from the 　　　died.So he decided that the polluted water carried cholera.He suggested that the 　　　of all the water supplies be 　　　and new methods of 　　　with polluted water be found.Finally,"King Cholera" was defeated.

　　Step 4:Discussion

　　Task 1:Discuss it with your partner.

　　What should we pay attention to in our daily life in order not to get infected with cholera?

　　Task 2:Teamwork

According to the discussion,design a poster with your group,introducing cholera to people,and inform people of the ways to keep away from getting infected with