那是因为国内人爱搞竞赛,啥科目都弄点竞赛题玩玩.而且前几年不是一直搞补习奥数数学吗?当时国内也比较魔怔的.

来源: Pilsung 于 2024-09-01 08:33:52 [旧帖] [给我悄悄话] 本文已被阅读：次

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