问题 填空题

数据库技术的主要特点【 】,具有较高的数据和程序的独立性以及对数据实行集中统一的控制。

答案

参考答案:数据的共享性

解析:数据库技术的主要特点有:数据结构化、数据的共享性高、冗余度低、易扩充;数据独立性高;数据由DBMS统一管理和控制。

阅读理解

阅读理解。

     When you are reading something in English, you may often find a new word . What's the best way

to know it?

     You may look it up in an English-Chinese dictionary . It will tell you a lot about the word: the

pronunciation, the part of speech , the Chinese meaning and also how to use this word . But how can

you know where the word is in thousands of English words ? How to find it in the dictionary both quickly

and correctly?

     First, all the English words are arranged in the alphabetical order (按字母顺序排列). In the

dictionary you can first see the words beginning with the letter A , then B , C , D , E , … That means, if

there are two words "desert" and "pull" , "desert" will be certainly before "pull" . Then if there are two

words both beginning with the same letter , you may look at the second letter . Then the third, the fourth,

... For example, "pardon" is before "plough" , "judge" before "just" etc…

1.When you don't know a word , the best way is ________.

A. to ask your teacher

B. to think hard

C. to do nothing

D. to look it up in a dictionary

2.When you look up a word in the English-Chinese dictionary, you should understand not only

    its Chinese meaning , but also________ .

A. its pronunciation

B. its part of speech

C. the use of it

D. its pronunciation, the part of speech and the use of it

3. In the English-Chinese dictionary, the first part is ________.

A. the words beginning with the letter A

B. the words beginning with F

C. the simple words

D. the very short words

4. Here are four words, "blind" , "monument" , "murder" and "boyhood" . Their right order in

    the English-Chinese dictionary is ________.

A. blind, boyhood , murder, monument

B. blind, boyhood, monument, murder

C. boyhood, blind monument, murder

D. monument, murder, blind, boyhood

5. The English-Chinese dictionary is ________.

A. useful in learning Chinese

B. Our good friend in learning Chinese

C. Our good friend in learning English

D. not useful in learning English

单项选择题