以下哪一项不是忠诚客户的标志（）
A.持续购买
B.选择购买
C.相关购买
D.推荐购买
参考答案：B
— May! How is your plan? I heard you started it last Sunday.
— Oh! I _____ for it, but I haven't decided where to start it. [ ]
A. have prepared
B. had prepared
C. have been preparing
D. was preparing
按居民工作、居住、游憩等活动的特点，形成城市的( )体系。
A．生活居住区 B．工业区C．公共活动中心 D．道路交通
