单选题：Why does the author mention electric eels?

  • 题目分类：英语(二)
  • 题目类型：单选题
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题目内容：
Why does the author mention electric eels? A．To warn the reader to stay away from them.
B．To compare their voltage to that used in houses.
C．To give an example of a living electrical generator.
D．To describe a new source of electrical power.
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