_____ you've got a chance, you might as well make full use of it.[ ]

A. Now that  

B. After

C. Although  

D. As soon as

根据客车运行作业计划，对班车在一定线路和一定时间内运行所作的编排，称为（）。

A、车次

B、班次

C、正班

D、顶班