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立体几何1999 真题★★☆☆☆
AMC8 #8
Six squares are colored, front and back, (R = red, B = blue, O = orange, Y = yellow, G = green, and W = white). They are hinged together as shown, then folded to form a cube. The face opposite the white face is
六个正方形，正面和背面分别涂有颜色（R = 红色，B = 蓝色，O = 橙色，Y = 黄色，G = 绿色，W = 白色）。它们如图所示铰接在一起，然后折叠形成一个正方体。白色面相对的面颜色是什么？
