单选题:若将一个边长为4era的正方体切割成多个正方体,使得新得到的正方体表面积总和为原正方体表面积的两倍,则至少需要切割(  

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题目内容:
若将一个边长为4era的正方体切割成多个正方体,使得新得到的正方体表面积总和为原正方体表面积的两倍,则至少需要切割(  )次。 A.1
B.2
C.3
D.4

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答案解析:

将如下图所示图形折叠起来后,应该是四个选项中的(  )。

将如下图所示图形折叠起来后,应该是四个选项中的(  )。

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