《unit 1 great scientists必修5》-預(yù)覽頁
【正文】 ______ and new methods of ________ with polluted water be found. Finally, “King Cholera” was defeated. doctor 19th cause defeat broke marked pump source examined dealing (in 5 minutes) Retell the passage according to below: John Snow was a wellknown ____ in London in the ___ century. He wanted to find the ______ of cholera in order to ______ it. In 1854 when a cholera ____ out, he began to gather information. He _____ on a map where all the dead people had lived and he 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 water supply be _______ and new methods of ________ with polluted water be found. Finally, “King Cholera” was defeated.
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