这一面的题怎么写啊！求大神给答案解答!急急急!
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1，
when was the wind power first used
why we stopped using wind power
what are advantage of wind power
what are the problem of wind power
2，grinding grain，moving ships，pumping water
3，
many centuries ago
the cost
when was the wind power first used
why we stopped using wind power
what are advantage of wind power
what are the problem of wind power
2，grinding grain，moving ships，pumping water
3，
many centuries ago
the cost
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