简述邻里群体的作用。

阅读理解。

      If you have come into a chat room, or sent e-mails to or received e-mails from your net friends, you

have become one of the millions who talks to others in a different and short form of English.

     All over the world, every night children and the elder are "talking" online, and many of them are talking at the same time.

     If you want to talk fast, you need to use the language which is easy to understand. There is neither time nor space for you to tell others why. Why not just use I3RB (=be right back) to tell your friends you have

to leave for a moment?

      If you are interested in somebody,  A/S/I.is OK. It means you want to know your friend's age,  sex,

and location ( = place). You may get 18/F/ BJ as an answer. If something makes you laugh, say you are

OTF, or LOL (=laughing out loud).

     People want to write as fast as possible.and they want to get their ideas across as quickly as they can. Big letters are not often used, except when telling feelings, as it takes more time to hold down the "shift"

key and use capitals.Punctuation is going, too.

1.When people are online,they talk by_______.

A using body language a lot B. drawing some strange pictures

C. making phone callsD. making use of a different form of English

2.The net makes it possible for many' people in the world to_______ .

A.talk online at the same time

B.find their friends and relatives

C.pick out good things to buy

D.find out some problems in society

3.The sentence "There is neither time nor space for you to tell others why."

means that _______.

A. people should use the right words

B. people should know what time it is when they are talking

C. people online have to speak in an easy way

D. people should tell each other what they think about in a funny way

4.If you get 18/F/BJ as an answer to your A/S/I., it means_______.

A. the person who is talking to you is 18 from Beijing and he is high

B. you are talking to a boy 18 years old and he lives in Beijing

C. the girl you are talking to is 18 years old and she lives in Beijing

D. the Beijing girl you are talking to has been online for 18 minutes

5.Which is a way to save time online?

A. People do not use big letters and punctuation quite often.

B. Some people use pictures.

C. People don't write just using the keyboard.

D. People never use the "shift" key.

The foreigners arrived ______ Shanghai ______ night. [ ]

A. at; at

B. in; at

C. in; in

D. at; in

CPU主要由运算单元(ALU)、控制单元(CU)、寄存器和时序电路组成，对指令进行译码的功能是由______实现的。

A．运算单元

B．控制单元

C．寄存器

D．时序电路

中医学说中，“得神者昌”说明的是（）

A.声息和

B.腰腿灵

C.两耳聪

D.两目明

背景材料2012年9月初，被评为2013年感动中国的广西桂林的小学生何玥，病情复发二次入院，肿瘤已扩散至脑部组织。当听说自己的生命只剩三个月时，她决定将自己的器官捐献给需要的人。汶川地震的时候，何玥不仅把自己存下的零花钱全捐出去，还逼着她爸妈把一个月的工资捐给灾区。生病后，学校的老师、同学来看她，还送来了2000多元的捐款，她都要父亲把捐款捐出去给别人。她的事迹感动了很多人。

何玥同学的人生价值主要表现在哪些方面？请结合材料说明。