能将程序补充完整的选项是______。 class Person{ private int a； phblic int change(int m){return m；} } public class Teacher extends Person{ public int b； public static void main(String arg[ ]){ Person
Y处画一个点)： Dim cmdmave As Boolean Private Sub Form_MouseDown(Button As Integer,X As Single,Y As Single) If cmdmave Then Forml．PSet(X,Y) End lf End Sub Private Sub Form_MouseUp(Button As Integer,j
