关于胎膜早破的病因，下列哪一项除外()

A．创伤

B．胎膜发育不良

C．胎儿宫内发育迟缓

D．羊水过多

E．下生殖道感染

对窗体编写如下事件过程： Private Sub Form_ Mouse Down(Button As Integer，Shift As Integer，X AS Single，Y As Single)If Button=2 Then Print "AAAAA" End if End Sub Private Sub Form _ MouseUp(Button As Integer，Shift As Integer，X As Single，Y As Single) Print "BBBBB" End Sub 程序运行后，如果单击鼠标右键，则输出结果为 ______。

A．AAAAA BBBBB

B．BBBBB AAAAA

C．AAAAA

D．BBBBB