单选题：According to the author, energy security can only be achiev

  • 题目分类：英语六级
  • 题目类型：单选题
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题目内容：
According to the author, energy security can only be achieved by A．using less oil in power generation
B．replacing fossil fuels with more nuclear power
C．seeking energy self-sufficiency
D．expanding the sources of power supply

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