六级阅读练习 2011.03.23
<p> <span word="Passage">Passage</span> <span word="Three">Three</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="What">What</span> <span word="might">might</span> <span word="driving">driving</span> <span word="on">on</span> <span word="an">an</span> <span word="automated">automated</span> <span word="highway">highway</span> <span word="be">be</span> <span word="like">like</span>? <span word="The">The</span> <span word="answer">answer</span> <span word="depends">depends</span> <span word="on">on</span> <span word="what">what</span> <span word="kind">kind</span> <span word="of">of</span> <span word="system">system</span> <span word="is">is</span> <span word="ultimately">ultimately</span> <span word="adopted">adopted</span>. <span word="Two">Two</span> <span word="distinct">distinct</span> <span word="types">types</span> <span word="are">are</span> <span word="on">on</span> <span word="the">the</span> <span word="drawing">drawing</span> <span word="board">board</span>. <span word="The">The</span> <span word="first">first</span> <span word="is">is</span> <span word="a">a</span> <span word="special">special</span> <span word="purpose">purpose</span> <span word="lane">lane</span> <span word="system">system</span>, <span word="in">in</span> <span word="which">which</span> <span word="certain">certain</span> <span word="lanes">lanes</span> <span word="are">are</span> <span word="reserved">reserved</span> <span word="for">for</span> <span word="automated">automated</span> <span word="vehicles">vehicles</span>. <span word="The">The</span> <span word="second">second</span> <span word="is">is</span> <span word="a">a</span> <span word="mixed">mixed</span> <span word="traffic">traffic</span> <span word="system">system</span>: <span word="fully">fully</span> <span word="automated">automated</span> <span word="vehicles">vehicles</span> <span word="would">would</span> <span word="share">share</span> <span word="the">the</span> <span word="road">road</span> <span word="with">with</span> <span word="partially">partially</span> <span word="automated">automated</span> <span word="or">or</span> <span word="manually">manually</span> <span word="driven">driven</span> <span word="cars">cars</span>. <span word="A">A</span> <span word="special">special</span>-<span word="purpose">purpose</span> <span word="lane">lane</span> <span word="system">system</span> <span word="would">would</span> <span word="require">require</span> <span word="more">more</span> <span word="extensive">extensive</span> <span word="physical">physical</span> <span word="modifications">modifications</span> <span word="to">to</span> <span word="existing">existing</span> <span word="highways">highways</span>, <span word="but">but</span> <span word="it">it</span> <span word="promises">promises</span> <span word="the">the</span> <span word="greatest">greatest</span> <span word="gains">gains</span> <span word="in">in</span> <span word="freeway">freeway</span> <span word="capacity">capacity</span>.</p><p> <span word="Under">Under</span> <span word="either">either</span> <span word="scheme">scheme</span>, <span word="the">the</span> <span word="driver">driver</span> <span word="would">would</span> <span word="specify">specify</span> <span word="the">the</span> <span word="desired">desired</span> <span word="destination">destination</span>, <span word="furnishing">furnishing</span> <span word="this">this</span> <span word="information">information</span> <span word="to">to</span> <span word="a">a</span> <span word="computer">computer</span> <span word="in">in</span> <span word="the">the</span> <span word="car">car</span> <span word="at">at</span> <span word="the">the</span> <span word="beginning">beginning</span> <span word="of">of</span> <span word="the">the</span> <span word="trip">trip</span> <span word="or">or</span> <span word="perhaps">perhaps</span> <span word="just">just</span> <span word="before">before</span> <span word="reaching">reaching</span> <span word="the">the</span> <span word="automated">automated</span> <span word="highway">highway</span>. <span word="If">If</span> <span word="a">a</span> <span word="mixed">mixed</span> <span word="traffic">traffic</span> <span word="system">system</span> <span word="was">was</span> <span word="in">in</span> <span word="place">place</span>, <span word="automated">automated</span> <span word="driving">driving</span> <span word="could">could</span> <span word="begin">begin</span> <span word="whenever">whenever</span> <span word="the">the</span> <span word="driver">driver</span> <span word="was">was</span> <span word="on">on</span> <span word="suitable">suitable</span> <span word="equipped">equipped</span> <span word="roads">roads</span>. <span word="If">If</span> <span word="special">special</span>-<span word="purpose">purpose</span> <span word="lanes">lanes</span> <span word="were">were</span> <span word="available">available</span>, <span word="the">the</span> <span word="car">car</span> <span word="could">could</span> <span word="enter">enter</span> <span word="them">them</span> <span word="and">and</span> <span word="join">join</span> <span word="existing">existing</span> <span word="traffic">traffic</span> <span word="in">in</span> <span word="two">two</span> <span word="different">different</span> <span word="ways">ways</span>. <span word="One">One</span> <span word="method">method</span> <span word="would">would</span> <span word="use">use</span> <span word="a">a</span> <span word="special">special</span> <span word="onramp">onramp</span>(入口引道). <span word="As">As</span> <span word="the">the</span> <span word="driver">driver</span> <span word="approached">approached</span> <span word="the">the</span> <span word="point">point</span> <span word="of">of</span> <span word="entry">entry</span> <span word="for">for</span> <span word="the">the</span> <span word="highway">highway</span>, <span word="devices">devices</span> <span word="installed">installed</span> <span word="on">on</span> <span word="the">the</span> <span word="roadside">roadside</span> <span word="would">would</span> <span word="electronically">electronically</span> <span word="check">check</span> <span word="the">the</span> <span word="vehicle">vehicle</span> <span word="to">to</span> <span word="determine">determine</span> <span word="its">its</span> <span word="destination">destination</span> <span word="and">and</span> <span word="to">to</span> <span word="ascertain">ascertain</span> <span word="that">that</span> <span word="it">it</span> <span word="had">had</span> <span word="the">the</span> <span word="proper">proper</span> <span word="automation">automation</span> <span word="equipment">equipment</span> <span word="in">in</span> <span word="good">good</span> <span word="working">working</span> <span word="order">order</span>. <span word="Assuming">Assuming</span> <span word="it">it</span> <span word="passed">passed</span> <span word="such">such</span> <span word="tests">tests</span>, <span word="the">the</span> <span word="driver">driver</span> <span word="would">would</span> <span word="then">then</span> <span word="be">be</span> <span word="guided">guided</span> <span word="through">through</span> <span word="a">a</span> <span word="gate">gate</span> <span word="and">and</span> <span word="toward">toward</span> <span word="an">an</span> <span word="automated">automated</span> <span word="lane">lane</span>. <span word="In">In</span> <span word="this">this</span> <span word="case">case</span>, <span word="the">the</span> <span word="transition">transition</span> <span word="from">from</span> <span word="manual">manual</span> <span word="to">to</span> <span word="automated">automated</span> <span word="control">control</span> <span word="would">would</span> <span word="take">take</span> <span word="place">place</span> <span word="on">on</span> <span word="the">the</span> <span word="entrance">entrance</span> <span word="ramp">ramp</span>. <span word="An">An</span> <span word="alternative">alternative</span> <span word="technique">technique</span> <span word="could">could</span> <span word="employ">employ</span> <span word="conventional">conventional</span> <span word="lanes">lanes</span>, <span word="which">which</span> <span word="would">would</span> <span word="be">be</span> <span word="shared">shared</span> <span word="by">by</span> <span word="automated">automated</span> <span word="and">and</span> <span word="regular">regular</span> <span word="vehicles">vehicles</span>. <span word="The">The</span> <span word="driver">driver</span> <span word="would">would</span> <span word="steer">steer</span> <span word="onto">onto</span> <span word="the">the</span> <span word="highway">highway</span> <span word="and">and</span> <span word="move">move</span> <span word="in">in</span> <span word="normal">normal</span> <span word="fashion">fashion</span> <span word="to">to</span> <span word="a">a</span> <span word="transition">transition</span> <span word="lane">lane</span>. <span word="The">The</span> <span word="vehicle">vehicle</span> <span word="would">would</span> <span word="then">then</span> <span word="shift">shift</span> <span word="under">under</span> <span word="computer">computer</span> <span word="control">control</span> <span word="onto">onto</span> <span word="a">a</span> <span word="lane">lane</span> <span word="reserved">reserved</span> <span word="for">for</span> <span word="automated">automated</span> <span word="traffic">traffic</span>.</p>
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