单选题：Global residential power consumption can be cut by 43 percen

题目分类：英语六级
题目类型：单选题
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题目内容：

Global residential power consumption can be cut by 43 percent if________. A．we increase the insulation of walls and water pipes
B．we choose simpler models of electrical appliances
C．we cut down on the use of refrigerators and other white goods
D．we choose the most efficient models of refigerators and other whitegoods

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分类：英语六级题型：单选题

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