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观察下面一组数:﹣1,2,﹣3,4,﹣5,6,﹣7,….,将这组数排成如图的形式,按照如图规律排下去,则第11行中从左边数第10个数是(  )

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int a[2][3]={{1,2},{3,4},{5,6}};  int a[ ][3]={1,2,3,4,5,6};  int a[2][ ]={1,2,3,4,5,6};  int a[2][ ]={{1,2},{3,4}};  
(1,2)   (2,3)   (3,4)   (5,6)  
int a[2][3]={0};  int a[][3]={{1,2},{0}};  int a[2][3]={{1,2},{3,4},{5,6}};  int a[][3]={1,2,3,4,5,6};  
intb[][2]={1,2,3,4,5,6,7};  intb[3][5]={0,0,0};  intb[][4]={{1,2},{3,4,5},{6}};  intb[3][2]={(1,2),(3,4),(5,6)};  
int a [2][3]={0};  int a[] [3]={{1,2},{0}};  int a [2][3]={{1,2},{3,4},{5,6}};  int a[][3]={1,2,3,4,5,6};  
int num[]={1,2,3,4,5,6};  int num[][3]={{1,2},3,4,5,6};  int num[2][4]={{1,2},{3,4},{5,6}};  int num[][4]={1,2,3,4,5,6};  
int a[2][3]={{1,2},{3,4},{5,6}}  int a[2][3]={{1,2,3},4,5,6};  int a[2][]={1,2,3,4,5,6};  int a[][]={1,2,3,4,5,6};  
int b[][2]={1,2,3,4,5,6,7};  int b[3][5]={0,0,0};  int b[][4]={{1,2},{3,4,5),{6}};  int b[3][2]={(1,2),(3,4),(5,6)};  
intx[][3]={0};  intx[2][3]={{1,2},{3,4},{5,6}};  intx[][3]={{1,2,3},{4,5,6}};  intx[2][3]={1,2,3,4,5,6};  
{(1,4),(3,4),(3,5),(2,5)}  {(5,4),(5,3),(5,6)}  {(1,2),(2,3),(3,5)}  {(3,4),(3,5),(4,5),(1,4)}  

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