你說的切西瓜方法就是最常見的教學方法啊，要不然通分怎麽來的？隨便找一本小學課本都是這樣的。

來源: L1 於 2014-09-22 00:27:04 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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