Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up (1) at the customer premise over slow (2) ports. PPP was designed to run directly over these serial links. But with the advent of broadband Internet (3) technologies such as ADSL and cable modems there has been a considerable increase in the bandwidth delivered to the end users. This means that the host computers at the customer premise connect to the (4) or cable "modem" over a much faster medium such as Ethernet. It also means that multiple (5) can connect to the Internet through the same connection.

（5）应填入（）

A．cables

B．hosts

C．servers

D．modems

工时定额收费是由某维修项目工时定额乘以工时单价来计算，工时单价必须根据维修企业的投资规模、设施、设备条件、技术水平、服务质量、社会物价和（）来核定。

A．国家有关政策

B．技术熟练程度

C．基本配置