题目

如图，菱形ABCD的对角线AC＝4cm，把它沿着对角线AC方向平移1cm，得到菱形EFGH，则图中阴影部分图形的面积与四边形EMCN的面积之比为········································································· （　　） A．4∶3                      B．3∶2                       C．14∶9                     D．17∶9 答案：C

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