单项选择题

执行以下Commaand1的Click事件过程在窗体上显示( )。
Option Base 0
Prinvate Sub Command1_Clcik()
Dim a
a=Array("a","b","C","d","e","f","g")
Print a(1);a(3);a(5)
End Sub

A．abc
B．bdf
C．ace
D．出错

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单项选择题

可决定窗体左上角是否有控制菜单的属性是( )。

A．ControlBox
B．MinButton
C．MaxButton
D．BorderStyle

单项选择题

设已经在菜单编辑器中设计了窗体的快捷菜单，某顶级菜单为a1，且取消其“可见”属性。运行时，以下( )事件过程可以使快捷菜单的菜单项响应鼠标左键单击和右键单击。

A．Private Sub Form_Mouse Down(Button As Integer,Shift As Integer,_X As Single,Y As Single)
If Button=2 Then PopupMenu a1,2
End Sub
B．Private Sub Form Mouse Down(Button As Integer,Shift As Integer,_X As Single,Y As Single)
PopupMenu a1,0
End Sub
C．Private Sub Form_Mouse Down(Button As Imeger,Shift As Integer,_X As Single,Y As Single)
PopupMenu a1
End Sub
D．Private Sub Form_Mouse Down(Button As Integer,Shift As Integer,_X As Single,Y As Single)
If (Button=vbLetfButton)Or(Button=vbRightButton)Then PopupMenu a1
End Sub

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