s=0

  For i=1 To 5 Step-2

s=s+i

  Next i

  执行上述代码后，下列说法正确的是（  ）

Private Sub Command1_Click()

Dim a(1 To 10) As Integer, b(1 To 10) As Integer

Dim n As Integer, i As Integer

  n = 3

  For i = 1 To 5

    a(i) = i

    b(n) = 2 * n + i

 Next i

 Text1.Text = Str(a(n))

 Text2.Text = Str(b(n))

End Sub

程序运行后，单击命令按钮，在文本框Text1和Text2上显示的结果分别是（  ）

实现上述功能的VB代码如下，请完善代码：

Private Sub Command1_Click()

Dim n As Integer, i As Integer, t As Integer,sum As Long,s As String

n=Val(Text1.Text)

For i = 1 To n^3 Step 2     ‘变量i表示连续奇数的首个整数

 sum=0:t = i:flag = False

 Do While sum <= n^3 And flag = False

  sum ={#blank#}1{#/blank#}

  t = t +2

  If{#blank#}2{#/blank#}Then flag = True

 Loop

 If flag = True Then Exit For

Next i

s = Str(n) + “^”+ Str(3) + “=”

Do While sum >0

{#blank#}3{#/blank#}

 If sum = 0 Then

  s = s + Str(i)

 Else

  s = s + Str(i) +“+”

 End If

 i = i + 2

Loop

Text2.Text = s

End Sub

为了实现此算法，图中判断框①和处理框②处可填入的是（  ）