题目

语法填空 Cholera was a deadly disease of its day. Neither its cause nor its cure  (understand). So thousands of  (terrify) people died when there was an outbreak. John Snow wanted to solve  problem. He knew that cholera would not be controlled  its cause was found. He became interested in two theories  possibly explained how cholera killed people. The first suggested that cholera  (multiply) in the air. The second suggested that people absorbed this disease  their bodies with their meals. John Snow suspected that the second theory was correct but he needed evidence. So when another outbreak hit London in 1854, he was ready (begin) his enquiry. With all the evidence he gathered, John Snow was able to announce with  (certain) that polluted water carried the virus.  (final) “King Cholera” was defeated. 答案：【1】was understood【2】terrified【3】the【4】until【5】that/which【6】multiplied【7】into【8】to begin【9】certainty【10】Finally

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