Our manager ________ for Shanghai in a few days and he has asked me to find out when the earliest plane ________ next Wednesday.

A．is leaving; takes off

B．will leave; is taking off

C．leaves; will take off

D．is to leave; is going to take off

当一根线断路时，SCP网络会如何工作？（）

A.另一根线传输断路线的镜象数据

B.网络停止工作

C.UBP网络是SCP备份

D.另一侧的模块不能通讯