－Thank you! Mille and Kitty. It was kind of you to recommend me as the new chairperson.

－            .

A．Don’t say so

B．Better not

C．Certainly not

D．It’s our pleasure

在以太网中应用光缆作为传输介质的意义在于( )。

A．增加网络带宽

B．扩大网络传输距离

C．降低连接及使用费用

D．A和B