I see,长见识了，美国的数学安排好奇怪，让孩子跳几何，代数2，却要重复calAB and calBC:)

来源: 快乐的小鸟于 2025-02-11 10:04:28 [旧帖] [给我悄悄话] 本文已被阅读：次

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