问题 填空题

局域网从介质访问控制方法的角度可以分两类:共享介质局域网与 【10】 局域网。

答案

参考答案:交换式

解析:[知识点] 局域网分类与基本工作原理
[评析] 局域网从介质访问控制方法的角度可以分为两类:共享介质局域网与交换式局域网。IEEE 802.2标准定义的共享介质局域网有3类:采用CSMA/CD介质访问控制方法的总线型局域网、采用TOKEN BUS介质访问控制方法的总线型局域网与采用TOKEN RING介质访问控制方法的环型局域网。

阅读理解

Is it important to have breakfast every day? A short time ago, a test was given in the United States.People of different ages, from 12 to 83, were asked to have a test.During the test, these people were given all kinds of breakfast, and sometimes they got no breakfast at all.Scientists wanted to see how well their bodies worked after eating different kinds of breakfast.

The results show that if a person eats a right breakfast, he or she will work better than if he or she has no breakfast.If a student has fruit, eggs, bread and milk before going to school, he or she will learn more quickly and listen more carefully in class.Some people think it will help you lose weight if you have no breakfast.But the result is opposite to what they think.This is because people become so hungry at noon that they eat too much for lunch.They will gain weight (增加体重) instead of losing it.

小题1:What were the people given during the test?

A.No breakfast at all.

B.Very rich breakfast.

C.Little food for breakfast.

D.Different foods or sometimes none.小题2:What do the results show?

A.They show that breakfast has affected on work and studies.

B.The results show that breakfast has little to do with a person’s work.

C.The results show that a person will work better if he only has fruit and milk.

D.They show that girl students should have less for breakfast.小题3:According to the passage, what will happen to you if you don’t have any breakfast?

A.To be healthier.

B.To work better.

C.To gain weight.

D.To fail the test.

单项选择题