谢谢你们俩。你们三个都很好，怪哉出题，ca981图解，6700417代数解，我不用动脑筋，就能把我儿子烤糊了。

来源: DTMom 于 2014-02-03 12:37:04 [旧帖] [给我悄悄话] 本文已被阅读：次

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