问题 单项选择题

计算机网络的类型很多,例如: Ⅰ.专用网:Ⅱ.公用网:Ⅲ.城域网;Ⅳ.广域网;Ⅴ.局域网;Ⅵ.星形网;Ⅶ.总线网:Ⅷ.网状网;Ⅸ.ATM网等。因特网属于什么类型

A.Ⅰ、Ⅳ和Ⅸ

B.Ⅱ、Ⅳ和Ⅷ

C.Ⅱ、Ⅲ和Ⅵ

D.Ⅱ、Ⅵ和Ⅸ

答案

参考答案:B

解析:【解析】因特网属于公用网;按覆盖范围来看属于广域网;从网络拓扑来看属于网状网。

听力题

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填人一个适当的词或使用括号中词语的正确形式填空。(请把【答案】填在答卷上)

What is red but green, open but closed and old but new? Answer: London’s new double-decker buses.

The traditional red double-deckers are    61   symbol of London. Their symbolic status was settled in 2008 when one bus made the longer-than-usual trip to Beijing    62   (collect) a very special passenger: the Olympic Flame.

Now a new bus design    63   (uncover) and it has been exciting Londoners.

The new bus uses more efficient green technology and has two staircases and an open platform,    64   (make) people able to hop on and hop off. It also has a unique design for the front end, which gives it an innovative(新颖的)look.

Despite(尽管)   65   innovations, the design is not all new. Its outward appearance takes after London’s faithful old double-decker, the Route master.

In July 2008 a    66   (compete) was launched by the London Mayor, Boris Johnson, to design a new Route master bus for the capital. There were over 700 entries,  67  several designers jointly winning the £25,000 (244,000 Yuan) prize.

The new double-deckers, ___68___ have three doors to speed up boarding, are expected to be in service in 2012.

Mr. Johnson said: “This iconic new part of our transport system is not only beautiful, but also has a green heart beating beneath its___69___ (attract) appearance.”

He expects cities around the globe to be “beside themselves with envy” for ___70__ he described as a "stunning red symbol" of 21st-century London.

填空题