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四年级数学，周长49厘米的等腰三角形，求腰长和底边最大是多少
四年级数学期末考试拉分题，周长49厘米的等腰三角形，求腰长和底边最大是多少 关注 五宜微课，私信 991 可以获得更多的学习资料！
四年级数学下册讲题集66/119
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