Mr Smith was driving fast to take his wife to the nearest hospital because their baby was________.

A．on its way

B．in the way

C．by the way

D．out of the way

用路由器把一个网络分段，这样做的好处是 (6) 。

A．网络中不再有广播通信，所有的数据都通过路由转发器转发
B．路由器比交换机更有效率
C．路由器可以对分组进行过滤
D．路由器可以减少传输延迟