客户试驾时销售顾问应该（）。
A.少说话
B.多介绍
C.适时提醒行驶路线
D.提醒注意安全驾驶
参考答案：A, C, D
The president, accompanied by his assistants, _____. [ ]
a. have arrived
b. are arriving
c. had arrived
d. has arrived
下列哪种服务不能在互联网上实现（）
A.网上美容
B.网上购物
C.网上图书馆
D.网上医院
