六级阅读练第32篇
<p> <span word="The">The</span> <span word="three">three</span> <span word="main">main</span> <span word="types">types</span> <span word="of">of</span> <span word="databases">databases</span> <span word="are">are</span> <span word="statistical">statistical</span>, <span word="bibliographic">bibliographic</span>, <span word="and">and</span> <span word="full">full</span> <span word="text">text</span>. <span word="Statistical">Statistical</span> <span word="databases">databases</span> <span word="store">store</span> 15 <span word="amounts">amounts</span> <span word="of">of</span> <span word="numerical">numerical</span> <span word="data">data</span>, <span word="such">such</span> <span word="as">as</span> <span word="wage">wage</span> <span word="and">and</span> <span word="price">price</span> <span word="indexes">indexes</span>, <span word="census">census</span> <span word="information">information</span>, <span word="foreign">foreign</span> 16 <span word="rates">rates</span> <span word="and">and</span> <span word="bond">bond</span> <span word="prices">prices</span>. <span word="Bibliographic">Bibliographic</span> <span word="databases">databases</span> <span word="store">store</span> <span word="references">references</span> <span word="to">to</span> <span word="and">and</span> <span word="summaries">summaries</span> <span word="of">of</span> <span word="articles">articles</span> <span word="in">in</span> <span word="periodicals">periodicals</span> <span word="and">and</span> <span word="newspapers">newspapers</span>. <span word="Full">Full</span>-<span word="text">text</span> <span word="databases">databases</span> <span word="offer">offer</span> <span word="the">the</span> <span word="complex">complex</span> <span word="texts">texts</span> <span word="of">of</span> <span word="such">such</span> 17<span word="as">as</span> <span word="newspaper">newspaper</span>, <span word="magazine">magazine</span>, <span word="and">and</span> <span word="journal">journal</span> <span word="articles">articles</span>. <span word="Thousands">Thousands</span> <span word="of">of</span> <span word="databases">databases</span> <span word="exist">exist</span> <span word="today">today</span>, <span word="and">and</span> <span word="their">their</span> <span word="numbers">numbers</span> <span word="are">are</span> <span word="growing">growing</span>. <span word="Many">Many</span> <span word="companies">companies</span> <span word="have">have</span> <span word="their">their</span> <span word="in">in</span>-<span word="house">house</span> <span word="database">database</span>, <span word="which">which</span> <span word="is">is</span> 18 <span word="to">to</span> <span word="employees">employees</span> <span word="through">through</span> <span word="computer">computer</span> <span word="terminals">terminals</span> <span word="or">or</span> <span word="microcomputers">microcomputers</span>. <span word="In">In</span> <span word="addition">addition</span>, <span word="several">several</span> <span word="hundred">hundred</span> <span word="commercial">commercial</span> <span word="databases">databases</span> <span word="are">are</span> <span word="now">now</span> <span word="available">available</span> <span word="to">to</span> <span word="the">the</span> 19 , <span word="with">with</span> <span word="literally">literally</span> <span word="millions">millions</span> <span word="of">of</span> <span word="items">items</span> <span word="of">of</span> <span word="information">information</span> <span word="readily">readily</span> <span word="obtainable">obtainable</span>. <span word="These">These</span> <span word="databases">databases</span> 20 <span word="specific">specific</span> <span word="fields">fields</span>, <span word="such">such</span> <span word="as">as</span> <span word="law">law</span> <span word="and">and</span> <span word="financial">financial</span> <span word="forecasting">forecasting</span>, <span word="or">or</span> <span word="general">general</span> <span word="information">information</span>, <span word="such">such</span> <span word="as">as</span> <span word="sports">sports</span> <span word="and">and</span> <span word="weather">weather</span> <span word="data">data</span>. <span word="A">A</span>. <span word="exchange">exchange</span> <span word="B">B</span>. <span word="public">public</span> <span word="C">C</span>. <span word="instantly">instantly</span> <span word="D">D</span>. <span word="cover">cover</span> <span word="E">E</span>. <span word="enables">enables</span> <span word="F">F</span>. <span word="consuming">consuming</span> <span word="G">G</span>. <span word="remained">remained</span> <span word="H">H</span>. <span word="materials">materials</span> <span word="I">I</span>. <span word="hide">hide</span> <span word="J">J</span>. <span word="intensively">intensively</span> <span word="K">K</span>. <span word="vast">vast</span> <span word="L">L</span>. <span word="communications">communications</span> <span word="M">M</span>. <span word="exhausting">exhausting</span> <span word="N">N</span>. <span word="accessible">accessible</span> 0. <span word="maintained">maintained</span></p><p> </p>
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