进行广告费的预算分配，要注意（）。
A.时间的准确性
B.预留机动费用
C.销售的淡季和旺季
D.广告效果的持续性问题
参考答案：B, C, D
Speaker A: Where can I find a map of the university campusSpeaker B: ______
A．Yeah, with a map you won't get lost on such a big campus.
B．Sorry, we don't sell maps and things like that here.
C．Have you tried the information center
D．OK, let me tell you how to get the university campus.
动车组列车只发售二等座车学生票，学生票为全价票的50%。（）
