单选题:将1~10这10个自然数分别填入下图方格表中,使得每一横行中从左至右的数字由小到大排列.每一竖列中第二行每个数都比它上面

题目内容:
将1~10这10个自然数分别填入下图方格表中,使得每一横行中从左至右的数字由小到大排列.每一竖列中第二行每个数都比它上面的那个数至少大2,请问有多少种填法?(  )

A.18
B.13
C.15
D.12

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答案解析:

是我们常常会犯的毛病。走过贫穷和物质短缺年代,进人物质相对丰富的时代,对于贫穷的 更加强烈.物质占有的欲望更加迫切。

是我们常常会犯的毛病。走过贫穷和物质短缺年代,进人物质相对丰富的时代,对于贫穷的 更加强烈.物质占有的欲望更加迫切。填入划横线部分最恰当的一项是(  )。

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