static void Main(string[] args)        {            Student s1 = new Student();            s1.age = 10;            s1.name = "小A";            ChageS(s1);            Console.WriteLine("修改后年龄：{0}", s1.age);//猜一下结果是10 还是20呢            Console.Read();        }        static void ChageS(Student s)        {            Student ss = new Student();            ss.age=20;            ss.name="小B";            s = ss;//s对ss的实例引用了吗？        }    }    class Student    {        public int age;        public string name;    }