机动车减速行驶时，如果（）会引起剧烈抖动。 A.降档过快 B.降档过慢 C.升档过快

We live in the computer age. People use computers to do much of their work, such as playing games, listening to music, shopping and so on. But few people know how to take care of them. Please remember the following when you use your computer:

1.Keep your computer in a dry cool room. Too much heat is bad for computers.

2. Do not smoke near your computer. Smoking is also bad for them.

3. Do not drink or eat near computers. A little water and pieces of food in the keyboard are also bad for a computer.

4. Keep your screen clean and do not have it too bright. They are bad for your eyes. Make sure the screen is not too far or too near your eyes when you use a computer.

小题1:What can people do with computers?

A． playing games.

B．listening to music.

C．shopping.

D．all of them above.小题2:Where should computers be put?

A．Five.

B．Seven.

C．Thirty-five.

D．Forty.小题3:What is bad for a computer?

A．Too much heat in the room, smoking or eating near the computer.

B．Too much heat in the room, drinking or eating near the computer.

C．Too much heat in the room, smoking or drinking near the computer.

D．Too much heat in the room, smoking, drinking or eating near the computer.小题4:Why shouldn’t we keep the screen of a computer too bright? Because it’s bad for ______.

A．the computer

B．our eyes

C．our bodies

D．our environment小题5:The best title of the passage may be _________.

A．How to protect our eyes?

B．How to use computers?

C．How to protect your computer?

D．What can computers do for us?

在关系DB中，任何二元关系模式的最高范式必定是

A．1NF

B．2NF

C．3NF

D．BCNF

There is a vessel carrying（）hydrographic survey in the area marked by red lights.

A.on

B.in

C.out

D.with

将考生文件夹下BLUE文件夹中的文件SOUPE.FOR删除。

下列标识符命名正确的是（）

A.X_25

B.4foots

C.&Years

D.val（7）