问题 单项选择题

国际标准化组织(ISO)的开放系统互联(OSI)参考模型共分七层。其中,处理系统之间用户信息的语法表达形式问题的是 (1) 层;规定通信双方相互连接的机械、电气、功能和规程特性的是 (2) 层;向用户提供各种直接服务,如文件传送、电子邮件、虚拟终端等的是 (3) 层;通过校验和反馈、重发等方法将原始不可靠的物理连接改造成无差错的数据通道的是 (4) 层:负责通信子网中从源到目标路径选择的是 (5) 层。

3()

A.物理层

B.数据链路层

C.网络层

D.运输层

E.会话层

F.表示层

G.应用层

答案

参考答案:G

单项选择题
阅读理解

阅读理解。

     What can help you make a fortune in the future? Graduating from a top university might not be enough.

A new study from the University of Essex in Britain has shown that the more friends you have in school,

the more money you'll earn later.

    The idea that popularity could have a serious impact on one's earning potential shouldn't come as too much

of a surprise. The researchers noted that if you want to get ahead in life, social skills and networking are easily

as powerful as talent and hard work.

     "If a person has lots of friends, it means that he or she has the ability to get along with others in all kinds

of different situations," said Xu Yanchun, 17, from Nantou High School in Shenzhen, who totally agreed with

the recent finding. "Also, friends always help each other. They not only create wider social circles for you but

lift your mood when you occasionally feel depressed," said Xu.She believed that all this helps you "earn a

higher salary".

     Maybe that's why some people think the younger generations are in the age of Friendalholism (交友狂症).

A woman even complained that the networking website Facebook's 5,000-friend limit was too low for her

large reserve of social contacts.

     But what does a friend mean? Should friends be regarded as a form of currency?

     "Call me uncool, but I think of a friend as an actual person with whom I have an actual history and whom

I enjoy actually seeing.It seems, however, that this is no longer the definition (定义) of 'friend'," said Meghan

Daum, who works with The Los Angeles Times in the US.

1.The new study from the University of Essex in Britain shows that ______.

A. if you have more friends you will not live happily.

B. the more friends you have in school, the more money you'll earn in your late life.

C. the less friends you have, the poor lives you will live.

D. friends can make more money for you.

2.According to Xu Yanchun, when you have lots of friends, it means             .

A. You have the ability to earn more money.

B. You will not feel lonely.

C. You are quite content with your life.

D. You have the ability to get along with others in various situations.

3.What's the main idea of the passage?

A. The passage mainly tells us something about the friendship.

B. Friends play a more important part in our daily life than anything else.

C. Friends are currency.

D. Friends give you success.

4.We can learn from the passage that ______.

A .If you have more friends, you can make a fortune in the future.

B. Graduating from college means that you can make a fortune in the future.

C. Friends mean a form of currency.

D. Friends can make you wider social circle and make you feel better when you feel depressed.