导读：人教版英语必修五unit 2课后comprehending 答案 花开就一次 1年前他留下的回答 已收到1个回答 CATSPASS 花朵 该名网友总共回答了22个问题...
人教版英语必修五unit 2课后comprehending 答案
花开就一次
1年前他留下的回答
已收到1个回答
CATSPASS
花朵
该名网友总共回答了22个问题，此问答他的回答如下：采纳率：95.5%
1题 21473856
2题
1John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.
2No. The map helped John Snow organize his ideas. He was able to identify those households that had many deaths and check their water-drinking habits. He identified those houses that had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.
3Four diseases, which are similar today, are SARS, AIDS, TB (肺结核) and bird-flu, because they are both very serious, have an unknown cause and need public health care to solve them.
http://zhidao.baidu.com/question/473207324.html
1年前他留下的回答
2
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