為啥呢？我朋友家孩子就是9年級學AP physics 1，說很簡單啊。AP biology難道真的難？

來源: 兩女寶媽於 2025-10-21 10:34:26 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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