火力发电厂厂区的出入口不应少于（）个，其位置应便于消防车出入。
A、2
B、3
C、4
D、5
参考答案：A
It is believed that movies, also ________ motion pictures, were introduced into China near the end of the 19th century.
A．to be called
B．to call
C．calling
D．called
我国实行的第一个现代学制是（）。
A．壬寅学制
B．癸卯学制
C．壬子癸丑学制
D．壬戌学制
