国家“十二五规划”提出了加快发展生产性服务行业和大力发展生活性服务业，其中，生产性服务业包括（）。

How often does the company calibrate its machines?A．Once a monthB．Every three monthsC．Every six monthsD．Once a year 点击查看答案

What does the man learn about the library?（）

A．It receives new movies each month.
B．It keeps its movies in a separate room.
C．It has about 2,000 movies in its collection.
D．It limits borrowers to two movies at a time.

点击查看答案&解析