问题 单项选择题

计算机网络分类主要依据于______。

A.传输技术与覆盖范围

B.传输技术与传输介质

C.互联设备的类型

D.服务器的类型

答案

参考答案:A

解析:[评析] 计算机网络的分类方法可以是多样的,其中最主要的两种方法是:
1、根据网络所使用的传输技术来分,可分为广播式网络和点到点网络;
2、根据网络的覆盖范围与规模来分,可分为局域网、城域网、广域网。

单项选择题
阅读理解

阅读理解

     When I was growing up, I was embarrassed to be seen with my father. He was severely crippled and

very short, and when we would walk together, his hand on my arm for balance, people would stare. If he

ever noticed or was bothered, he never let on.

     It was difficult to coordinate(协调) our steps - his slow, mine impatient -- and because of that, we didn't say much as we went along. But as we started out, he always said, "You set the pace. I will try to

adjust to you. "

     He never talked about himself as an object of pity, nor did he show any envy of the more fortunate or

able. What he looked for in others was a "good heart", and if he found one, the owner was good enough

for him.

      Now that I am older, I believe that is a proper standard by which to judge people, even though I still

don' t know accurately(精确地) what a "good heart" is. But I know the times I don't have one myself.

     Unable to engage in many activities, my father still tried to participate in some way.

     I now know he participated in some things indirectly through me, his only son. When I played ball

(poorly), he "played" too. When I joined the Navy, he "joined" too. And when I came home on leave, he

saw to it that(务必保证、一定) I visited his office. Introducing me, he was really saying, "This is my son, but it is also me, and I could have done this, too, if things had been different." Those words were never

said aloud.

     He has been gone many years now, but I think of him often. I wonder if he sensed my unwillingness

to be seen with him during our walks. If he did, I am sorry I never told him how sorry I was, how

unworthy I was, how I regretted it. I think of him when I complain about small affairs, when I am envious

of another's good fortune, when I don't have a "good heart".

     At such times I put my hand on his arm to regain my balance, and say, "You set the pace, I will try to

adjust to you."

1. The author felt unhappy walking with his father because __________.

A. he was pitiful for his father's physical disability

B. it was hard for them to walk at the same pace

C. he didn't want others to know he had an ugly father

D. it was not easy for his father to keep balance

2. In the father's view, the most important quality a good person should have is __________.

A. beautiful appearance

B. excellent health

C. a smart head

D. a good heart

3. It can be inferred from the text that __________.

A. the father was proud of his only son

B. the father took part in all his son's activities

C. the author was upset when asked to his father's office

D. the author was a good ball player and outstanding soldier

4. According to the last paragraph, by saying "You set the pace. I will try to adjust to you.", the

    author means that __________.

A. he is now glad to help his father to walk

B. he regrets his unwillingness to walk with his father

C. he will follow Father's standards of being a good man

D. he will never forget how mentally strong his father was