有谁知道这几道数学题怎么做啊?http://www.pep.com.cn/czsx/jszx/bnjsc/dzkb/200805/t20080505_465004.htm
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![有谁知道这几道数学题怎么做啊?http://www.pep.com.cn/czsx/jszx/bnjsc/dzkb/200805/t20080505_465004.htm](/uploads/image/z/1262683-19-3.jpg?t=%E6%9C%89%E8%B0%81%E7%9F%A5%E9%81%93%E8%BF%99%E5%87%A0%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%E6%80%8E%E4%B9%88%E5%81%9A%E5%95%8A%3Fhttp%3A%2F%2Fwww.pep.com.cn%2Fczsx%2Fjszx%2Fbnjsc%2Fdzkb%2F200805%2Ft20080505_465004.htm)
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