六级阅读练习 2011.04.09
<p> <span word="Unit">Unit</span> 6</p><p> <span word="Passage">Passage</span> <span word="One">One</span></p><p> <span word="Questions">Questions</span> 21 <span word="to">to</span> 25 <span word="are">are</span> <span word="based">based</span> <span word="on">on</span> <span word="the">the</span> <span word="following">following</span> <span word="passage">passage</span>.</p><p> <span word="Navigation">Navigation</span> <span word="computers">computers</span>, <span word="now">now</span> <span word="sold">sold</span> <span word="by">by</span> <span word="most">most</span> <span word="car">car</span>-<span word="makers">makers</span>, <span word="cost">cost</span> $2 000 <span word="and">and</span> <span word="up">up</span>. <span word="No">No</span> <span word="surprise">surprise</span>, <span word="then">then</span>, <span word="that">that</span> <span word="they">they</span> <span word="are">are</span> <span word="most">most</span> <span word="often">often</span> <span word="found">found</span> <span word="in">in</span> <span word="luxury">luxury</span> <span word="cars">cars</span>, <span word="like">like</span> <span word="Lexus">Lexus</span>, <span word="BMW">BMW</span> <span word="and">and</span> <span word="Audi">Audi</span>. <span word="But">But</span> <span word="it">it</span> <span word="is">is</span> <span word="a">a</span> <span word="developing">developing</span> <span word="technologymeaning">technologymeaning</span> <span word="prices">prices</span> <span word="should">should</span> <span word="eventually">eventually</span> <span word="dropand">dropand</span> <span word="the">the</span> <span word="market">market</span> <span word="does">does</span> <span word="seem">seem</span> <span word="to">to</span> <span word="be">be</span> <span word="growing">growing</span>.</p><p> <span word="Even">Even</span> <span word="at">at</span> <span word="current">current</span> <span word="prices">prices</span>, <span word="a">a</span> <span word="navigation">navigation</span> <span word="computer">computer</span> <span word="is">is</span> <span word="impressive">impressive</span>. <span word="It">It</span> <span word="can">can</span> <span word="guide">guide</span> <span word="you">you</span> <span word="from">from</span> <span word="point">point</span> <span word="to">to</span> <span word="point">point</span> <span word="in">in</span> <span word="most">most</span> <span word="major">major</span> <span word="cities">cities</span> <span word="with">with</span> <span word="precise">precise</span> <span word="turn">turn</span>-<span word="by">by</span>-<span word="turn">turn</span> <span word="directionsspoken">directionsspoken</span> <span word="by">by</span> <span word="a">a</span> <span word="clear">clear</span> <span word="human">human</span>-<span word="sounding">sounding</span> <span word="voice">voice</span>, <span word="and">and</span> <span word="written">written</span> <span word="on">on</span> <span word="a">a</span> <span word="screen">screen</span> <span word="in">in</span> <span word="front">front</span> <span word="of">of</span> <span word="the">the</span> <span word="driver">driver</span>.</p><p> <span word="The">The</span> <span word="computer">computer</span> <span word="works">works</span> <span word="with">with</span> <span word="an">an</span> <span word="antenna">antenna</span>(天线)<span word="that">that</span> <span word="takes">takes</span> <span word="signals">signals</span> <span word="from">from</span> <span word="no">no</span> <span word="fewer">fewer</span> <span word="than">than</span> <span word="three">three</span> <span word="of">of</span> <span word="the">the</span> 24 <span word="global">global</span> <span word="positioning">positioning</span> <span word="system">system</span> <span word="satellites">satellites</span>. <span word="By">By</span> <span word="measuring">measuring</span> <span word="the">the</span> <span word="time">time</span> <span word="required">required</span> <span word="for">for</span> <span word="a">a</span> <span word="signal">signal</span> <span word="to">to</span> <span word="travel">travel</span> <span word="between">between</span> <span word="the">the</span> <span word="satellites">satellites</span> <span word="and">and</span> <span word="the">the</span> <span word="antenna">antenna</span>, <span word="the">the</span> <span word="cars">cars</span> <span word="location">location</span> <span word="can">can</span> <span word="be">be</span> <span word="pinned">pinned</span> <span word="down">down</span> <span word="within">within</span> 100 <span word="meters">meters</span>.</p><p> <span word="The">The</span> <span word="satellite">satellite</span> <span word="signals">signals</span>, <span word="along">along</span> <span word="with">with</span> <span word="inputs">inputs</span> <span word="on">on</span> <span word="speed">speed</span> <span word="from">from</span> <span word="a">a</span> <span word="wheel">wheel</span>-<span word="speed">speed</span> <span word="sensor">sensor</span> <span word="and">and</span> <span word="direction">direction</span> <span word="from">from</span> <span word="a">a</span> <span word="meter">meter</span>, <span word="determine">determine</span> <span word="the">the</span> <span word="cars">cars</span> <span word="position">position</span> <span word="even">even</span> <span word="as">as</span> <span word="it">it</span> <span word="moves">moves</span>. <span word="This">This</span> <span word="information">information</span> <span word="is">is</span> <span word="combined">combined</span> <span word="with">with</span> <span word="a">a</span> <span word="map">map</span> <span word="database">database</span>. <span word="Streets">Streets</span>, <span word="landmarks">landmarks</span> <span word="and">and</span> <span word="points">points</span> <span word="of">of</span> <span word="interest">interest</span> <span word="are">are</span> <span word="included">included</span>.</p><p> <span word="Most">Most</span> <span word="systems">systems</span> <span word="are">are</span> <span word="basically">basically</span> <span word="identical">identical</span>. <span word="The">The</span> <span word="differences">differences</span> <span word="come">come</span> <span word="in">in</span> <span word="hardwarethe">hardwarethe</span> <span word="way">way</span> <span word="the">the</span> <span word="computer">computer</span> <span word="accepts">accepts</span> <span word="the">the</span> <span word="drivers">drivers</span> <span word="request">request</span> <span word="for">for</span> <span word="directions">directions</span> <span word="and">and</span> <span word="the">the</span> <span word="way">way</span> <span word="it">it</span> <span word="presents">presents</span> <span word="the">the</span> <span word="driving">driving</span> <span word="instructions">instructions</span>. <span word="On">On</span> <span word="most">most</span> <span word="systems">systems</span>, <span word="a">a</span> <span word="driver">driver</span> <span word="enters">enters</span> <span word="a">a</span> <span word="desired">desired</span> <span word="address">address</span>, <span word="motorway">motorway</span> <span word="junction">junction</span> <span word="or">or</span> <span word="point">point</span> <span word="of">of</span> <span word="interest">interest</span> <span word="via">via</span> <span word="a">a</span> <span word="touch">touch</span> <span word="screen">screen</span> <span word="or">or</span> <span word="disc">disc</span>. <span word="But">But</span> <span word="the">the</span> <span word="Lexus">Lexus</span> <span word="screen">screen</span> <span word="goes">goes</span> <span word="a">a</span> <span word="step">step</span> <span word="further">further</span>: <span word="you">you</span> <span word="can">can</span> <span word="point">point</span> <span word="to">to</span> <span word="any">any</span> <span word="spot">spot</span> <span word="on">on</span> <span word="the">the</span> <span word="map">map</span> <span word="screen">screen</span> <span word="and">and</span> <span word="get">get</span> <span word="directions">directions</span> <span word="to">to</span> <span word="it">it</span>.</p>
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