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http://www.qsir.org/?p=8853
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GeoGebra
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【案例】2018年全国1卷理科12题
異分母分數減法
第八周作业
三位數除以一位數(二)
【案例】圆柱体内放置一个大球六个小球
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三角形的外角等于与其不相邻的两个内角之和
利用圖解法解方程
test
橢圓P176例11
S3 WS4.3 Q01(3D圖)
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Hypergeometric Distribution
Combinatorics
Triangles
Terms
Mathematics