In 20 years, our lives will be 小题1:   (不同的). It will be comfortable and   小题2:（容易的）.

In the school, there will be computers on   小题3:（每个人的） desk. We can use it to do our homework, send emails. We can send our homework to our teacher    小题4:   (用) email. Also, we can study at home. And we can play lots of computer games .

In our home, we will have many    小题5: （美丽的） rooms. In my room, I will have a big and comfortable bed. I will have a small and   小题6: （轻的） laptop. I will have a new and small cell phone. I can call my friends every day. I will have lots of interesting books.

In 20 years, I will find a good job, too. I can get much money a month. I will go 小题7:  （购物）and do sports every week. I will have a new robot. It can do much dull and   小题8:  （繁重的） work, so I will have lots of    小题9:  （空闲的） time. I’m sure I will have    小题10: （一个） interesting life.

网络安全技术包括（）

A.访问控制技术

B.数字签名技术

C.密钥管理技术

D.防火墙技术

E.通信流分析控制技术