问题 单项选择题

在数据库技术中,反映现实世界中事物的存在方式或运动状态的是

A.信息

B.数据

C.消息

D.命令

答案

参考答案:A

解析: 信息是现实世界事物的存在方式或运动状态的反映,具有可感知、可存储、可加工、可传递和可再生等自然属性;信息又是社会各行各业不可缺少的资源,这也是信息的社会属性。而数据是描述现实世界事物的符号记录,是指用物理符号记录下来的可以鉴别的信息。

阅读理解

阅读理解

    Most shops in Britain open at 9:00am, and close at 5:00 or 5:30 in the evening. Small shops usually

close for an hour at lunchtime. On one or two days a week-usually Thursday and/or Friday-some large

food shops stay open until about 8:00 pm for late night shopping.

    Many shops are closed in the afternoon on one day a week. The day is usually Wednesday or

Thursday and it is a different day in different towns.

     Nearly all shops are closed on Sundays. Newspaper shops are open in the morning, and sell sweets

and cigarettes as well. But not all the things can be sold on Sundays.

     Usually it is not difficult for foreign visitors to find where to buy things. Most shops sell the things that

you want to buy. One problem is stamps. In Britain you can only buy these at post offices. Many large

food shops are self-service. When you go into one of these shops, you take a basket and you put the

things you wish to buy into this. You pay for everything just before you leave. If anyone tries to take

things from a shop without paying, they are almost certain to be caught, because most shops have

detectives.

     When you are waiting to be served in a shop, it is important not try to be served before people who

arrive before you. Many foreign people are surprised at the British way of queuing (排队).

1. Most shops in Britain stay open for about ______ a day.

A. eight hours    

B. five hours    

C. ten hours    

D. six hours

2. According to the passage, which of the following statements is NOT true?

A. Some large food shops open for about 11 hours on Thursday or Friday.

B. Many shops are closed in the afternoon once a week on Tuesday.

C. Only a few things can be bought on Sundays.

D. It is not difficult for foreign visitors to buy things in Britain.

3. You can not buy ______ in shops.

A. cigarette    

B. sweets    

C. stamps    

D. clothes

4. Which of the following statements is TRUE?

A. Most shops usually close for an hour at lunchtime.

B. Many large shops are self-service.

C. Most shops have detectives.

D. People do not have to queue to be served.

5. Which of the following statements can be the best title of this passage?

A. Shops in Britain

B. How to buy things in Britain?

C. The British Way of Queuing

D. How long are the British shops?

判断题