If you are looking for information, library shelves are a good place to start. But if you need up-to-the-minute data or have specialized needs, you may find a computerized database more useful, less expensive, and less time 11 .A database, a file of information on one subject or family of subjects, can be stored and 12 in a computers memory. The speed of the computer then 13 you to recall any item in this file almost 14
The three main types of databases are statistical, bibliographic, and full text. Statistical databases store 15 amounts of numerical data, such as wage and price indexes, census information, foreign 16 rates and bond prices. Bibliographic databases store references to and summaries of articles in periodicals and newspapers. Full-text databases offer the complex texts of such 17 as newspaper, magazine, and journal articles.
Thousands of databases exist today, and their numbers are growing. Many companies have their in-house database, which is 18 to employees through computer terminals or microcomputers. In addition, several hundred commercial databases are now available to the 19 , with literally millions of items of information readily obtainable. These databases 20 specific fields, such as law and financial forecasting, or general information, such as sports and weather data.
A. exchange B. public C. instantly D. cover
E. enables F. consuming G. remained H. materials
I. hide J. intensively K. vast L. communications
M. exhausting N. accessible 0. maintained
II. F 12. O 13. E 14. C 15. K 16. A 17. H 18. N 19. B 20. D
中考英语写作指导:(五)应用文及范文点评
孩子的独立教育
四步骤法轻松“拿下”中考英语书面表达
中考英语作文范文:杜绝浪费
中考英语写作练习1-3:命题作文并根据英文提示写作
父母是否该为孩子做决定?
中考英语写作练习8:给偶像写信
歌唱带来欢乐(Singing Contributes to a Joyful Mind)
坚持就是胜利(Success Belongs to the Persevering)
玩电脑游戏的利与弊
中考英语作文范文:做自己
谈论一下上网的利与弊
中考英语写作指导:(三)说明文及范文点评
中考英语写作指导:(一)写作概述和指导
2015年中考英语备考:四步轻松搞定中考英语书面表达
我的父亲很温柔(My father is a gentle man)
论交通安全(On Traffic Safety)
我心幕中的英雄(The Hero in My Heart)
我的表不走了(My Watch Doesn’t Work)
中考英语写作练习4-6:命题作文并根据中文提示写作
缤纷校园生活(Colourful school life)
我的故乡(MY NATIVE TOWN)
我最喜欢的人(My Favourite Person)
中考英语写作指导:(四)议论文及范文点评
中考英语作文范文:我将来的计划
关于在五一的日记
要忍耐(to be patient)
中考英语作文范文:Dreams and Reality
中考英语作文范文:英语学习计划
中考英语作文范文:如何提高记忆力?
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