可汗的錄像就相當於上課唄.學校老師上課也不可能一下子就把孩子教懂.得自己看書做題啊.

來源: Pilsung 於 2025-01-12 10:57:19 [舊帖] [給我悄悄話] 本文已被閱讀：次

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