They're from Chemistry Olympiad class by a Chinese teacher

来源: AnonymousUser 于 2025-07-16 09:17:27 [档案] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)

回答: 2025 Chemistry Olympiad US team 有两位小中，都得了gold 由 yddad 于 2025-07-15 18:32:58

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