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
太阳系外40光年处发现的“超级地球”有望孕育生命
2017届高考英语一轮复习课件:Unit10 Money(北师大版)
浙江省2017高考英语二轮复习 专题训练 信息匹配(75)
浙江省2017高考英语二轮复习 专题训练 信息匹配(84)
2017届高考英语一轮复习训练:完形填空2
速度与激情9:《速激》系列路在何方
2017届高考英语一轮复习课件:Unit12 Culture Shock(北师大版)
2017届高考英语一轮复习课件:Unit18 Beauty(北师大版)
安徽省池州一中2017-2017学年高一上学期期中考试英语试题(无答案)
2017届高考英语一轮复习课件:Unit13 The Media(北师大版)
浙江省2017高考英语二轮复习 专题训练 信息匹配(79)
浙江省2017高考英语二轮复习 专题训练 信息匹配(78)
浙江省2017高考英语二轮复习 专题训练 信息匹配(86)
国际英语资讯:Japan, Australia discuss regional security issues, agree to enhance ties
2017届高考英语一轮复习课件:Unit23 Conflict(北师大版)
浙江省2017高考英语二轮复习 专题训练 信息匹配(83)
浙江省2017高考英语二轮复习 专题训练 信息匹配(85)
国内英语资讯:FM: Parties in Korean Peninsula nuclear issue want no conflicts, wars
国内英语资讯:China signs over 130 transport pacts with Belt and Road countries
浙江省2017高考英语二轮复习 专题训练 信息匹配(76)
国内英语资讯:Xi Jinping elected delegate to 19th CPC National Congress
山西省忻州一中2017-2017学年高一上学期期中考试英语试题 Word版含答案
2017届高考英语一轮复习训练:完形填空3
2017届高考英语一轮复习课件:Unit15 Learning(北师大版)
2017届高考英语一轮复习课件:Unit20 New Frontiers(北师大版)
国际英语资讯:Russia launches Soyuz spacecraft with two-men crew to ISS
浙江省2017高考英语二轮复习 专题训练 信息匹配(82)
广东省云浮市邓发纪念中学2017-2017学年高一上学期期中考试英语试题
云南省保山市腾冲八中2017-2017学年高一上学期期中考试英语试题
2017届高考英语一轮复习训练:完形填空6
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