单选题下面不能正确计算 1 + ( 1 + 2 ) + ( 1 + 2 + 3 ) + … + ( 1 + 2 + … + 10 ) 的是

A、 Private Sub Command1_Click() s = 0 : t = 0 For i = 1 To 10 For j = 1 To i t = t + j Next j s = s + t Next i Print s End Sub
B、 Private Sub Command1_Click() s = 0 For i = 1 To 10 t = 0 For j = 1 To i t = t + j Next j s = s + t Next i Print s End Sub
C、 Private Sub Command1_Click() s = 0 For i = 10 To 1 Step -1 t = 0 For j = 1 To i t = t + j Next j s = s + t Next i Print s End Sub
D、 Private Sub Command1_Click() s = 0 : t = 0 For i = 1 To 10 t = t + i s = s + t Next i Print s End Sub

【正确答案】 A

【答案解析】解析：选项A，当外层循环变量i=1时，执行内层循环，内层循环变量j=1时，执行结果为t=1，内层循环结束，s=1；当外层循环变量i=2时，执行内层循环，内层循环变量j=1时，t=1+1，内层循环变量j=2时，t=1+1+2，内层循环结束，s=1+t=1+（1+1+2），至此，A选项已经不符合要求。按照同样的方法分析B、C、D选项，均满足题目要求，故正确答案为选项A。