While she _________ TV in the sitting room, the bell________.

A．watches, rings

B．is watching, rang

C．was watching, rang

D．watched, was ringing

按照新规定，（）基站需取消二次下电设置，直接与电池连接。

A、VIP基站

B、传输节点站

C、重要小区

D、一级基站