1．会员登陆及身份验证
A．会员用户实现登录　
B．身份验证
C．修改个人资料
2．在线选购商品
A．浏览不同类别的书籍
B．图书查询
C．用户选购图书放入购物车和管理购物车　
D．用户查看和提交订单(1. member landing and authentication
A. member users implement logon
B. authentication
C. modification of personal data
2. online shopping for goods
A. browse different categories of books
B. book query
C. users buy books in shopping cart and manage shopping cart
D. users view and submit orders)