局域网不提供的服务是A．资源共享 B．设备共享 C．多媒体通信 D．分布式计算

阅读理解。

     Everyone needs friends. There is an old saying,"Friends are God's way of

taking care of us." But how do you find real friendship and keep it?

     The American writer Sally Seamans tells young students some smart ways tofind friends. Sally says finding friendship is just like planting a tree. You  

plant the seed (种子) and take care of it to make it grow.

     First, you should choose(选择) a friend. What makes a good friend? It is

not because a person has money or good looks. A good friend should be kind and patient. For example, if you have a bad day, a good friend should listen to your complaints and do his or her best to help. To make a friend, you cannot be too shy. You should make each other happy and share your lives.

     But things cannot always be happy. Even the best friends have fights(吵架). What should you do when you have a fight with your friend? You have

to talk to him or her. When there is no one around, have an honest talk. If he or she doesn't want to talk, you could write a letter. There are three steps to

being friends again:

     Tell him or her how you are feeling; say what your friend has done wrong, and explain why you did this or that. Remember that friendship is the most

important thing in your life.

1. Sally wants to tell students the ways to_____.

A. find friends  

B. plant trees  

C. get happy  

D. keep fit

2. What makes good friends? A good friend should _____.

A. be lovely and cool                    

B. be kind and patient

C. have lots of money                    

D. have good looks

3. According to the text, you can _____your friend after a fight.

A. buy a present for                    

B. never say a word to

C. have dinner with                    

D. write a letter to

4. What should you do if you fight with your friend?

A. Fight till win.                    

B. Say sorry to him or her.

C. Have an honest talk or write a letter.  

D. Tell the teacher.

5. What is the best title of the text? 

A. Teenagers and friendship.  

B. The good friends around you.

C. The trouble of growing up.  

D. The care and keeping of friends.

东关小学六年级有400人，至少有3人的生日是同一天．______．

在同一教室内有四只温度计，把它们分别放在空气中，放在装有酒精的开口烧杯中及封口的瓶中，用电风扇吹，如图，其示数都是20℃，那么，不准确的温度计是（　　）

A．

B．

C．

D．

在通用入侵检测模型中，（）是整个检测系统的核心，它包含了用于计算用户行为特征的所有变量。

城市贫困问题