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2009全国高中数学联赛试题新鲜出炉(附答案) |
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发表于 2009-10-11 13:05:41
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19events = 644days
PB (2 3 4 5)B = 1200seconds 北大魔方爱好者QQ群74893945 mf8最少步讨论群:RP与公式的绝佳配合QQ群5652935 |
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发表于 2009-10-11 14:06:26
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魔方收藏群 123380874
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