Private Sub Command1_Click()

 Dim y As Integer

 y = Val(Text1.Text)

 Label1.Caption = Str(f(y))

End Sub

Function f(n As Integer) As Integer

 If (n = 1) Or (n = 2) Then

    f = 1

  Else

    f = f(n - 1) + f(n - 2)

  End If

End Function

程序运行时，在文本框中输入8，单击命令按钮Command1后，Label1中显示的内容是：

Dim a(1 to 5) as integer, i as integer, c as integer

a(1)=2: a(2)=1: a(3)=3: a(4)=4: a(5)=5

c=0

for i=3 to 5

 if a(i-2)+a(i-1) =a(i) then c=c+1

next i

text1.text = str(c)

该程序运行后，文本框text1中显示的内容是（   ）

Dim a(1 To 7) As Integer

a(1) = 14: a(2) = 15: a(3) = 0: a(4) = 11: a(5) = 13: a(6) = 21: a(7) = 17

i = 6: flag = True

Do While i > 1 And flag

   If a(i) Mod 3 = 0 And a(i) <> 0 Then

     t = a(i): a(i) = a(i + 1): a(i + 1) = t

   ElseIf a(i) = 0 Then

     flag = flase

   ElseIf a(i + 1) Mod 2 = 1 Then

     a(i) = Abs(a(i) - a(i + 1))

   End If

   i = i - 1

Loop

import pandas as pd

s1=pd.Series(range(1,12,3))

print(s1)

该程序段运行后输出结果为（   ）