2015年的职称英语考试理工类C级概括大意试题练习(2)
<p> 2015年职称英语考试理工类<span word="C">C</span>级概括大意试题练习</p><p> <span word="Compact">Compact</span> <span word="Disks">Disks</span></p><p> 1 <span word="If">If</span> <span word="someone">someone</span> <span word="says">says</span> <span word="to">to</span> <span word="you">you</span> <span word="your">your</span> <span word="music">music</span> <span word="CDs">CDs</span> <span word="dont">dont</span> <span word="really">really</span> <span word="hold">hold</span> <span word="any">any</span> <span word="music">music</span> <span word="on">on</span> <span word="them">them</span>, <span word="and">and</span> <span word="they">they</span> <span word="only">only</span> <span word="have">have</span> <span word="numbers">numbers</span> <span word="recorded">recorded</span> <span word="on">on</span> <span word="them">them</span>, <span word="you">you</span> <span word="may">may</span> <span word="not">not</span> <span word="believe">believe</span> <span word="it">it</span>. <span word="In">In</span> <span word="fact">fact</span>, <span word="he">he</span> <span word="is">is</span> <span word="right">right</span> <span word="in">in</span> <span word="that">that</span> <span word="sound">sound</span> <span word="is">is</span> <span word="actually">actually</span> <span word="recorded">recorded</span> <span word="onto">onto</span> <span word="the">the</span> <span word="CDs">CDs</span> <span word="as">as</span> <span word="special">special</span> <span word="numbers">numbers</span> - <span word="a">a</span> <span word="digital">digital</span> <span word="code">code</span>. <span word="The">The</span> <span word="code">code</span> <span word="is">is</span> <span word="pressed">pressed</span> <span word="onto">onto</span> <span word="the">the</span> <span word="CD">CD</span> <span word="as">as</span> <span word="bumps">bumps</span> <span word="on">on</span> <span word="a">a</span> <span word="long">long</span> <span word="spiral">spiral</span> <span word="track">track</span> <span word="almost">almost</span> <span word="five">five</span> <span word="kilometers">kilometers</span> <span word="long">long</span>. <span word="These">These</span> <span word="bumps">bumps</span> <span word="are">are</span> <span word="an">an</span> <span word="average">average</span> <span word="of">of</span> 0.5 <span word="microns">microns</span> <span word="wide">wide</span></p><p> 2 <span word="A">A</span> <span word="small">small</span> <span word="laser">laser</span> <span word="beam">beam</span> <span word="shines">shines</span> <span word="onto">onto</span> <span word="the">the</span> <span word="bumps">bumps</span> <span word="as">as</span> <span word="the">the</span> <span word="CD">CD</span> <span word="turns">turns</span>. <span word="The">The</span> <span word="light">light</span> <span word="is">is</span> <span word="reflected">reflected</span> <span word="back">back</span> <span word="to">to</span> <span word="a">a</span> <span word="receiver">receiver</span> <span word="that">that</span> <span word="records">records</span> <span word="how">how</span> <span word="the">the</span> <span word="laser">laser</span> <span word="light">light</span> <span word="bounces">bounces</span> <span word="back">back</span>. <span word="This">This</span> <span word="lets">lets</span> <span word="the">the</span> <span word="CD">CD</span> <span word="player">player</span> <span word="turn">turn</span> <span word="the">the</span> <span word="reflected">reflected</span> <span word="light">light</span> <span word="back">back</span> <span word="into">into</span> <span word="the">the</span> <span word="original">original</span> <span word="code">code</span>. <span word="This">This</span> <span word="means">means</span> <span word="you">you</span> <span word="can">can</span> <span word="hear">hear</span> <span word="the">the</span> <span word="original">original</span> <span word="code">code</span> <span word="as">as</span> <span word="music">music</span>.</p><p> 3 <span word="Digital">Digital</span> <span word="codes">codes</span> <span word="are">are</span> <span word="used">used</span> <span word="with">with</span> <span word="many">many</span> <span word="technologies">technologies</span>. <span word="E">E</span>-<span word="mail">mail</span> <span word="needs">needs</span> <span word="these">these</span> <span word="kinds">kinds</span> <span word="of">of</span> <span word="code">code</span> <span word="numbers">numbers</span>. <span word="Space">Space</span> <span word="probes">probes</span> <span word="communicate">communicate</span> <span word="with">with</span> <span word="their">their</span> <span word="ground">ground</span> <span word="station">station</span> <span word="on">on</span> <span word="earth">earth</span> <span word="using">using</span> <span word="digital">digital</span> <span word="codes">codes</span>. <span word="Bar">Bar</span> <span word="codes">codes</span> <span word="are">are</span> <span word="read">read</span> <span word="as">as</span> <span word="digital">digital</span> <span word="codes">codes</span> <span word="in">in</span> <span word="computer">computer</span> <span word="systems">systems</span>. <span word="Digital">Digital</span> <span word="communications">communications</span> <span word="with">with</span> <span word="cell">cell</span> <span word="phones">phones</span> <span word="need">need</span> <span word="digital">digital</span> <span word="codes">codes</span>. <span word="Weather">Weather</span> <span word="radios">radios</span> <span word="also">also</span> <span word="tune">tune</span> <span word="in">in</span> <span word="to">to</span> <span word="specific">specific</span> <span word="signals">signals</span> <span word="using">using</span> <span word="these">these</span> <span word="codes">codes</span>.</p><p> 4 <span word="There">There</span> <span word="are">are</span> <span word="many">many</span> <span word="types">types</span> <span word="of">of</span> <span word="compact">compact</span> <span word="disks">disks</span>. <span word="One">One</span> <span word="format">format</span> <span word="is">is</span> <span word="called">called</span> <span word="CD">CD</span>-<span word="RWs">RWs</span>. <span word="They">They</span> <span word="can">can</span> <span word="be">be</span> <span word="recorded">recorded</span> <span word="on">on</span> <span word="and">and</span> <span word="re">re</span>-<span word="recorded">recorded</span> <span word="on">on</span> <span word="as">as</span> <span word="you">you</span> <span word="would">would</span> <span word="do">do</span> <span word="with">with</span> <span word="a">a</span> <span word="floppy">floppy</span> <span word="disk">disk</span>. <span word="Another">Another</span> <span word="format">format</span> <span word="is">is</span> <span word="the">the</span> <span word="CD">CD</span>-<span word="ROM">ROM</span>. <span word="The">The</span> <span word="technology">technology</span> <span word="for">for</span> <span word="recording">recording</span> <span word="on">on</span> <span word="these">these</span> <span word="disks">disks</span> <span word="is">is</span> <span word="different">different</span> <span word="from">from</span> <span word="other">other</span> <span word="CDs">CDs</span>. <span word="These">These</span> <span word="CDs">CDs</span> <span word="have">have</span> <span word="a">a</span> <span word="dye">dye</span> <span word="layer">layer</span> <span word="that">that</span> <span word="the">the</span> <span word="CD">CD</span> <span word="writer">writer</span> <span word="can">can</span> <span word="darken">darken</span> <span word="or">or</span> <span word="leave">leave</span> <span word="clear">clear</span>. <span word="The">The</span> <span word="clear">clear</span> <span word="and">and</span> <span word="dark">dark</span> <span word="spots">spots</span> <span word="are">are</span> <span word="the">the</span> <span word="digital">digital</span> <span word="code">code</span>. <span word="CD">CD</span>-<span word="ROM">ROM</span> <span word="stands">stands</span> <span word="for">for</span> <span word="Compact">Compact</span> <span word="Disc">Disc</span> - <span word="Read">Read</span> <span word="Only">Only</span> <span word="Memory">Memory</span>4. <span word="This">This</span> <span word="disk">disk</span> <span word="is">is</span> <span word="like">like</span> <span word="a">a</span> <span word="super">super</span> <span word="floppy">floppy</span> <span word="disk">disk</span> <span word="that">that</span> <span word="can">can</span> <span word="hold">hold</span> <span word="lots">lots</span> <span word="of">of</span> <span word="information">information</span>. <span word="One">One</span> <span word="CD">CD</span>-<span word="ROM">ROM</span> <span word="can">can</span> <span word="hold">hold</span> <span word="the">the</span> <span word="same">same</span> <span word="amount">amount</span> <span word="of">of</span> <span word="data">data</span> <span word="as">as</span> 500 <span word="floppy">floppy</span> <span word="disks">disks</span>. <span word="Information">Information</span> <span word="is">is</span> <span word="permanently">permanently</span> <span word="recorded">recorded</span> <span word="onto">onto</span> <span word="it">it</span>. <span word="Computer">Computer</span> <span word="games">games</span> <span word="and">and</span> <span word="other">other</span> <span word="programs">programs</span> <span word="are">are</span> <span word="considered">considered</span> <span word="to">to</span> <span word="be">be</span> <span word="CD">CD</span>-<span word="ROMs">ROMs</span>.</p>
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