下表有4*7个单元格，可以将其中多个邻接的单元格拼成矩形块。该表中共 有（ ）个四角上都为1的矩形块。
- A.6
- B.7
- C.10
- D.12
正确答案及解析
正确答案
D
解析
暂无解析
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