解题起码交上奥数的朋友...主要是大环境很堕落
所有跟帖:
• 数学起码是很多高级技能的基础 -gladys- ♀ (0 bytes) () 02/27/2022 postreply 17:23:46
• 我就是这样告诉娃数学的重要性的:) -两女宝妈- ♂ (0 bytes) () 02/27/2022 postreply 17:28:33
• 数学起码是很多高级技能的基础 -gladys- ♀ (0 bytes) () 02/27/2022 postreply 17:23:46
• 我就是这样告诉娃数学的重要性的:) -两女宝妈- ♂ (0 bytes) () 02/27/2022 postreply 17:28:33
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