完形填空。结合上下文及所给首字母填空。

    This i_____ (1) a classroom. It is nice a_____(2) bright, but it is s_____(3). The doors and

w_____(4) are clean. The desks and chairs are clean, t_____(5). The walls are white. O_____(6)

the front wall there is a b_____(72). The teacher's desk is near it. On the desk there are s_____(8)

flowers and pencils. There is a clock on the wall. It's not old. It is n_____(9).Now there are o_____(10)

eight students in the room. They are cleaning the classroom.

消费者决策过程可分五个阶段：（）、信息调查、比较评价、（）、购后评价。