将两个大小完全相同的杯子（如图甲）叠放在一起（如图乙），则图

将两个大小完全相同的杯子（如图甲）叠放在一起（如图乙），则图乙中的实物的俯视图是（）.

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将两个大小完全相同的杯子（如图甲）叠放在一起（如图乙），则图

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