问题 单项选择题

如果要在已创建的“计算机图书查询”查询中查找书籍分类编号为1(文学类)和书籍编号为9(计算机图书类)的所有书籍,则应该在“分类编号”字段下方的准则框中输入如下的查询条件( )。

A.1 and 9

B.1 or 9

C.l and 9 和1 or 9都正确

D.都不对

答案

参考答案:B

解析: 本题考查有关输入准则的知识。根据题意,要求找出所有文学类和书籍类的书来,即此时二者的关系为“或”关系,故查询条件应为:1 or 9,写在查询中分类编号字段的下方的准则栏中。读者应该注意的是,如果是或关系,查询条件就应该写在相应的字段下方的准则栏中;如果是与关系,应该在准则栏的同一行的不同字段下方。注意书写准则的位置。答案为B。

阅读理解

阅读理解

     The breathless pace of everyday life made many people sleepless, said our reporter Wang Ling,

when talking about the World Sleep Day (WSD)with sleep experts in order to find out how to get a

better sleep.

     Cui Shuliang, founder of 51sleep.com, which provides online advice for those yearning for a sound

sleep, found many of his workmates suffering badly from poor sleep quality, as an IT technician in

earlier times. "Each morning, I would hear complaints from someone that kept waking up during the

night, or someone else who had to spend all night fighting for sleep."

     Pressed by busy city life, more and more people are suffering from sleep problems ranging from

insomnia to narcolepsy (嗜眠症). Some people may be able to fall asleep, but spend the whole time in

fear. A survey conducted by the Sleep Research Society (SRS) shows that about 40% of the population

is troubled by sleep disorders, which can result in lowered awareness and less productive days. Serious

insomnia can even lead to psychiatric problems.

     Professor Zhang Xi, director of the organization, says the focus of this year's World Sleep Day will

be on scientific ways to sleep. Professor Zhang Xi explained that the causes of sleep disorders differ

among cases, but more than 80% of his patients had trouble in sleeping because they always have a

nervous worried feeling that makes it impossible for them to relax. "That's why we keep suggesting

people pay more attention to sleep problems, since there remains a hidden danger in the physical and

mental condition. On the other hand, people with sleep problems should learn how to ease their mind

and relax themselves. Staying mentally and physically healthy, plus having healthy habits, is the best

way to realize a sound sleep."

1. What do we know about Cui Shuliang according to the text?

A. He founded a website with the help of his friends.

B. He is experienced in using information technology.

C. He was suffering from serious sleep problems.

D. He often complained about being sleepy.

2. What can be inferred from the text?

A. Most people cannot have a good sleep.

B. Most sleep problems are caused by fear.

C. Sleep disorders can lead to serious results.

D. The SRS is an organization of 51sleep.com.

3. According to Professor Zhang Xi,we know that ________.

A. the WSD's focus is on the importance of sleep this year

B. people have paid enough attention to sleep problems

C. keeping in good health is necessary for a good sleep

D. different sleep problems have the same cause

4. Most of Professor Zhang Xi's patients have difficulty in sleeping because of ________.

A. stress  

B. excitement

C. noise  

D. fear

5. The underlined word "sound"in the second paragraph means"________".

A. light and long  

B. quick and dreamful

C. heavy and short  

D. deep and peaceful

单项选择题 A1型题