If you are looking (36) information, library shelves are a good place (37) . But if you need up-to-the-minute data or have specialized needs, you may (38) a computerized database more useful, (39) expensive, and less time consuming. A database, a file of (40) on one subject or family of subjects, can be (41) and maintained in a computer’s memory. The speed of the computer then enables you (42) any item in this file almost instantly.
The three main types of databases are statistics, bibliographies, and full text. Statistical databases store vast (43) of numerical data, such as wages and price indexes, census information, foreign exchange rates, and bond prices. Bibliographic databases store references to and (44) of articles (45) periodicals and newspapers. Full-text databases offer the complete texts of such materials (46) <
A. to start
B. started
C. starting
D. start
If you are looking (36) information, library shelves are a good place (37) . But if you need up-to-the-minute data or have specialized needs, you may (38) a computerized database more useful, (39) expensive, and less time consuming. A database, a file of (40) on one subject or family of subjects, can be (41) and maintained in a computer’s memory. The speed of the computer then enables you (42) any item in this file almost instantly.
The three main types of databases are statistics, bibliographies, and full text. Statistical databases store vast (43) of numerical data, such as wages and price indexes, census information, foreign exchange rates, and bond prices. Bibliographic databases store references to and (44) of articles (45) periodicals and newspapers. Full-text databases offer the complete texts of such materials (46) <
A. at
B. on
C. for
D. in
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