我做過BC的題。真是很簡單。極限學過學得明白了，幾年級都能考。

來源: 龍吟輕細於 2026-05-11 16:46:28 [舊帖] [給我悄悄話] 本文已被閱讀：次

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我做過BC的題。 真是很簡單。 極限學過學得明白了，幾年級都能考。