Private Sub Command1_Click（）

  Dim s1 As String，s2 As String   

  Dim ch As String，ch2 As String   

  Dim max As Double   

  Dim n As Integer，page As Integer  

  Dim i As Integer，j As Integer

  s1=Text1．Text：s2=””

  n=Len(s1)

  i=1：max=0

  Do While i<=n

    ch=Mid(s1，i，1)

    If ch>=“0”And ch<=“9”Then

        j=i

        ch2=Mid(s1，i，1)

        Do While ch2>=“0”And ch2<=“9”

           j=j+1

           ch2=Mid(s1，j, 1)

        Loop

        s2=    ’(1)

        If   Then    ’(2)

            max=Val(s2)

            page=i*10+j-1

            Text2．Text=Str(page)

            Text3．Text=Str(max Mod l00)

        End If

        i=j

      End If

      i=i+1

    Loop

  End Sub

Private Sub Command1_Click()

Dim sum As Double, x As Double

 sum = 0

 n = 0

 For i = 1 To 5

  x = n / i

  n = n + 1

  sum = sum + x

 Next

End Sub

该程序通过For循环计算sum的值，下列表达式的值与sum相等的是（  ）