On hearing the       news that they had won the match, the students shouted in___________ voices.

A．exciting, exciting

B．excited, excited

C．excited, exciting

D．exciting, excited

旅客要求变更低于原票等级列车或座席铺别时，列车（）办理。

A、不办理

B、在列车有能力情况下应予办理，开客运记录交旅客到站退还差价

C、使用原票有效

D、在列车有能力情况下应予办理，票价差额不予退还

E、客规