自动闭塞区段监督器不能确认第一闭塞分区空闲时发车的行车凭证是什么？
参考答案：绿色许可证。
-Are you sure you won't come for a drink with us?
- , if you insist.
A．Not at all
B．It depends
C．All right then
D．I don't care
公元（）前年茶已经开始园中栽培和作为贡茶
