商务管理网站的主要功能：
参考答案：
广告商品管理系统；客户管理系统；营销管理系统；网站管理系统。
— Are you a member of the club?
— . It’s years since I .
A．Yes; was
B．No; was
C．Yes; had been
D．No; became
长大下坡道为：线路坡度超过12‰，长度为5km及其以上。
