编写一个学生管理系统，每个学生应该包含如下信息：

地址，

出生日期，

学科成绩（语文，英语，数学，物理），

个人信息（姓名，性别，民族，国籍，学历），

联系方式（手机，家庭电话，学校电话）

　　

可以任意添加学生，删除学生，编辑学生信息，并且具有保存和读入学生信息的功能。-The preparation of a student management system, each student should include the following information: address, date of birth, academic performance (language, English, mathematics, physics), personal information (name, gender, ethnicity, nationality, education), contact information (phone, home phone, school phone) can add students, delete students, edit student information, and has preserved and read into the function of student information.