2. 外语
  3. Nowadays, people’s lifestyles are changing, which has resulted in the demand for fast foods. Usually one bacterium is sufficien

Nowadays, people’s lifestyles are changing, which has resulted in the demand for fast foods. Usually one bacterium is sufficien

admin2009-09-12  53
问题 Nowadays, people’s lifestyles are changing, which has resulted in the demand for fast foods.
Usually one bacterium is sufficient to cause illness.
选项 A、Y
B、N
C、NG
答案B
解析 参见第二段中的：Usually，it takes large numbers of food poisoning bacteria to be present in food in order to cause illness．原文中“large numbers of．．bacteria”与题目中“one bacteria”不符。
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大学英语四级

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