public object Clone()
        {
            DeepResume resume = new DeepResume(this.work);

            resume.name = this.name;
            resume.sex  = sex;
            resume.age  = age;
            return(resume);
        }
        //2、深复制
        void DeepCopy()
        {
            DeepResume a = new DeepResume("路人A");

            a.SetPersonalInfo("男", "20");
            a.SetWorkExperience("XX企业");
            DeepResume b = (DeepResume)a.Clone();

            b.SetWorkExperience("YY企业");
            DeepResume c = (DeepResume)a.Clone();

            c.SetPersonalInfo("男", "21");
            c.SetWorkExperience("ZZ企业");
            a.Display();
            b.Display();
            c.Display();
        }