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
牛津小学英语三年级说课稿 3B Unit 8第二课时
牛津小学英语三年级说课稿 第四单元第一课
小学英语第五册第四单元第一课说课稿
人教版小学英语三年级说课稿 第三单元第十六课
牛津小学英语三年级说课稿 如何说课3
牛津小学英语三年级说课稿 UNIT3 A Talk
牛津小学英语三年级说课稿 Who’s that?
牛津小学英语三年级说课稿 Look at me Part B Let ' s learn
牛津小学英语三年级说课稿 I like football
What’s this in English?说课稿
牛津小学英语三年级说课稿 Lesson 10
人教版小学英语三年级说课稿 Unit 8, Go for it
牛津小学英语三年级说课稿
牛津小学英语三年级说课稿 说课基本方法
牛津小学英语三年级说课稿 Unit 4 Do You Like Pears? P.B Let’s say & Let’s do
牛津小学英语三年级说课稿 Unit 9 Shopping第一课时
牛津小学英语三年级说课稿 Unit 12 Mainly Revision
牛津小学英语三年级说课稿 Chapter5 Disney, Walt
牛津小学英语三年级说课稿 3AUnit 8
牛津小学英语三年级说课稿 We love animals
Unit4 what can you do? 评课稿
牛津小学英语三年级说课稿 Unit 6 Holiday
牛津小学英语三年级说课稿 5B第九单元BC部分
牛津小学英语三年级说课稿 Let’s go by taxi
Unit6 In a Nature Park B Let’s learn说课稿
牛津小学英语三年级说课稿 如何说课
牛津小学英语三年级说课稿 Unit5 B Let’s talk
牛津小学英语三年级说课稿 Sports meeting
牛津小学英语三年级说课稿 Do you like football
牛津小学英语三年级说课稿 Unit 2 My school bag B
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