class Person { private int a; public int change(int m){ return m; } } public class Teacher extends Person { public int b; public static void main(String arg[]){ Person p = new Person(); Teacher t = new Teacher(); int i; // point x } } 在 // point x安排哪个语句合法? A.i = b; B.i = m; C.i = p.a; D. i = p.change(30);

class Person { private int a; public int change(int m){ return m; } } public class Teacher extends Person { public int b; public static void main(String arg[]){ Person p = new Person(); Teacher t = new Teacher(); int i; // point x } } 在 // point x安排哪个语句合法? A.i = b; B.i = m; C.i = p.a; D. i = p.change(30);

正确答案：D