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，可以使快捷菜单的菜单项响应鼠标左键单击和右键单击的事件过程是()。

A) Private Sub Form_MouseDown(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_MouseDown(Button As Integer,Shift As Integer,_
X As Single,Y As Single
PopupMenu a1,0
End Sub
C) Private Sub Form_MouseDown(Button As Integer,Shift As Integer,_
X As Single,Y As Single
PopupMenu a1
End Sub
D) Private Sub Form_MouseDown(Button As Integer,Shift As Integer,_
X As Single,Y As Single
If(Button=vbLetfButton) Or (Button=vbRightButton) Then PopupMenu a1
End Sub

护患关系模式是医学模式在人际关系中的具体体现，包括（）

A.主动一被动型（纯护理型），指导一合作型（指引型）

B.主动一被动型，共同参与型（自护型）

C.指导一合作型，共同参与型

D.主动一被动型，指导一合作型，共同参与型

E.主动一被动型，帮助指导型，合作指导型