Computers can do （) work in a short time, but a man can not do （) by himself.

A.In time

B.In fact

C.Actually

D.As a matter of fact

A.正确

B.错误

dents use computers to do all kinds of work. But more than 30 years ago, computers couldn't do much. They were very big and expensive. Very ___22___ people were interested in them and knew how to use them. Today computers are smaller and ___23___. But they can do a lot of work, many people like to use them. Some people even have them at home.

Computers become very important because they can work faster than people and make fewer mistakes. Computers can ___24___ people do a lot of work. Writers now use computers to write. Teachers use them to help teaching. Students use them to study. Computers can also remember what you ___25___ them. Computers are very useful and helpful. They are our friends. Do you want to have a computer？

21)、

A.like

B.cheaper

C.few

D.put into

E.help

22)、

A.like

B.cheaper

C.few

D.put into

E.help

23)、

A.like

B.cheaper

C.few

D.put into

E.help

24)、

A.like

B.cheaper

C.few

D.put into

E.help

25)、

A.like

B.cheaper

C.few

D.put into

E.help

A.Y.是

B.N.否

A．small companies did not have enough money to buy such expensive computers

B．large computers could not do the work that small companies can do today

C．large computers did not come onto the market

D．small companies did not need to use this new technology

What cannot be learned from the passage？

A、computers will take the place of nurses in the future

B、it is not likely that computers can plan their own moves in chess games

C、it is not likely that computers can perform. tasks as well as people do

D、some programs have been written to give the computers i

A.All teachers use computers,

B.1,500students have laptops.

C.It is an old college in America.

D.Students there can do anything

not have operating systems installed. You create a RIS image and load the image onto the RIS server and then start the new computers. You find that the new computers cannot connect to the RIS server. You verify that existing client computers on the network can connect to network servers.

What should you do？ (SELECT AND PLACE)

s are located in the same subnet. You access shared resources on Computer2 from Computer1.You change the IP address on Computer2 and immediately notice that you can no longer access the shared resources from Computer1. You confirm that you can still access Internet resources from both computers.You need to access the shared resources on Computer2 from Computer1.What should you do？（）

A.A

B.B

C.C

D.D

our company uses network access protection (NAP) to enforce policies on client computers that connect to the network. Client computes run windows vista. A group policy is used to configure client computers to obtain updates from WSUS. Company policy requires that updates labeled important and critical must be applied before client computers can access network resources. You need to ensure that client computers meet the company policy requirement. What should you do？（）

A.Enable automatic updates on each client.

B.Enable the security center on each client.

C.Quarantine clients that do not have all available security updates installed.

D.Disconnect the remote connection until the required updates are installed.