Private Sub Command1_Click()

Dim a as Integer

a=Val(Text1.text) ‘将文本框中的数字文本转换成数值

a=2*a+1

Text1.text = StrA.

End Sub

程序运行时在文本框Text1中输入1，连续两次单击命令按钮Command1后，Text1中显示的内容是：（   ）

Private   Sub  Command1_click ( )

Dim  n  As  Integer , m  As  Integer  , k  As  Integer

n  = Len ( Text1．Text )

m  = Val ( Text2．Text )

k  = Val ( Text3．Text )

If  m + k -1 > n   Then

Text4．Text = Mid ( Text1．Text , 1 , m – 1 )

      Else

       Text4．Text = Mid ( Text1．Text , 1 , m–1 ) + Mid ( Text1．Text , m+k , n–m–k +1 )

      End  If

End  Sub

Function s(n As Integer) As Integer

 If n=1 Then

   s=1

 Else

   s=s(n-1)+n

 End If

End Function

Private Sub Form_Click()

 Dim x As Integer

 x=s(4)

 Print x

End Sub

程序运行时,单击窗体后,变量x的值为（  ）

DIM A(6) AS INTEGER

FOR I= 1 TO 6

  A(I)= I

NEXT I

PRINT A(I)

f=[‘A’，‘B’，‘C’]

a=len(f)

print(‘a=’，a)