未按时报班的，超过发车（）视为脱班。
A、30分钟以内
B、1小时以内
C、1小时以上
D、2小时以上
参考答案：C
When I got to the cinema the film _____ for 5 minutes. [ ]
A. had begun
B. had started
C. had been on
D. had been begun
教学时间属于什么变量？（）
A.主动变量
B.属性变量
C.中介变量
D.类别变量
