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最佳答案:Economize on electricity,is not only our each person's responsibility and the du
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最佳答案:Economize on electricity, is not only our each person's responsibility and the d
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最佳答案:Saving ElectricityWe use electricity nearly everwhere in our daily life,so it's
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最佳答案:Each building has a medium size power plant, the country needs to invest hundred
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最佳答案:Everybody knows that electricty is very important for us. And it helps us a lot