楼主: zhangjia198404
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I have a dream that one day this nation will rise up and live out the true meaning of its creed: "We hold these truths to be self-evident that all men are created equal.
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离开了真实的生活,就只剩下黑板上的方程和曲线。但如诗的数学要与如画的现实结合,经济学才是既活又美的。
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