2017届（浙江、江苏）高考英语一轮复习题型重组训练：第21组（牛津译林版含解析）
<p> 第二十一组(建议用时：45分钟)Ⅰ.阅读理解<span word="letely">letely</span> <span word="frustrated">frustrated</span> <span word="by">by</span> <span word="the">the</span> <span word="blocking">blocking</span> <span word="and">and</span> <span word="for">for</span> 18—19 <span word="miles">miles</span> <span word="was">was</span> <span word="just">just</span> <span word="keeping">keeping</span> <span word="away">away</span> <span word="from">from</span> <span word="people">people</span> <span word="and">and</span> <span word="being">being</span> <span word="held">held</span> <span word="up">up</span>，” <span word="one">one</span> <span word="participant">participant</span> <span word="grumbled">grumbled</span> <span word="after">after</span> <span word="the">the</span> 2017 <span word="London">London</span> <span word="Marathon">Marathon</span>.“<span word="I">I</span> <span word="had">had</span> <span word="to">to</span> <span word="overtake">overtake</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="people">people</span> <span word="and">and</span> <span word="ended">ended</span> <span word="up">up</span> <span word="with">with</span> <span word="bruised">bruised</span>(淤肿的) <span word="forearms">forearms</span> <span word="from">from</span> <span word="all">all</span> <span word="the">the</span> <span word="elbows">elbows</span> <span word="Some">Some</span> <span word="researchers">researchers</span> <span word="believe">believe</span> <span word="that">that</span> <span word="we">we</span> <span word="can">can</span> <span word="find">find</span> <span word="the">the</span> <span word="answers">answers</span> <span word="through">through</span> <span word="a">a</span> <span word="more">more</span> <span word="familiar">familiar</span> <span word="system">system</span> <span word="in">in</span> <span word="which">which</span> <span word="jams">jams</span> <span word="appear">appear</span>—<span word="road">road</span> <span word="traffic">traffic</span> <span word="flow">flow</span>.<span word="Martin">Martin</span> <span word="Treiber">Treiber</span>, <span word="of">of</span> <span word="the">the</span> <span word="Technical">Technical</span> <span word="University">University</span> <span word="of">of</span> <span word="Dresden">Dresden</span> <span word="in">in</span> <span word="Germany">Germany</span>, <span word="has">has</span> <span word="previously">previously</span> <span word="developed">developed</span> <span word="models">models</span> <span word="for">for</span> <span word="traffic">traffic</span> <span word="flow">flow</span>.<span word="One">One</span> <span word="of">of</span> <span word="the">the</span> <span word="first">first</span> <span word="attempts">attempts</span> <span word="to">to</span> <span word="model">model</span> <span word="traffic">traffic</span> <span word="flow">flow</span> <span word="was">was</span> <span word="made">made</span> <span word="in">in</span> <span word="the">the</span> 1950<span word="s">s</span> <span word="by">by</span> <span word="James">James</span> <span word="Lighthill">Lighthill</span> <span word="and">and</span> <span word="his">his</span> <span word="collaborator">collaborator</span> <span word="Gerard">Gerard</span> <span word="Whitham">Whitham</span> <span word="of">of</span> <span word="Manchester">Manchester</span> <span word="University">University</span>.<span word="They">They</span> <span word="considered">considered</span> <span word="the">the</span> <span word="traffic">traffic</span> <span word="as">as</span> <span word="a">a</span> <span word="kind">kind</span> <span word="of">of</span> <span word="liquid">liquid</span> <span word="flowing">flowing</span> <span word="down">down</span> <span word="a">a</span> <span word="pipe">pipe</span>, <span word="and">and</span> <span word="looked">looked</span> <span word="at">at</span> <span word="how">how</span> <span word="the">the</span> <span word="flow">flow</span> <span word="changes">changes</span> <span word="as">as</span> <span word="the">the</span> <span word="fluid">fluid</span> <span word="gets">gets</span> <span word="denser">denser</span>(浓稠)．<span word="At">At</span> <span word="first">first</span> <span word="the">the</span> <span word="flow">flow</span> <span word="rate">rate</span> <span word="increases">increases</span> <span word="as">as</span> <span word="the">the</span> <span word="density">density</span> <span word="increases">increases</span>, <span word="there">there</span>’<span word="s">s</span> <span word="a">a</span> <span word="risk">risk</span> <span word="of">of</span> <span word="jams">jams</span>, <span word="and">and</span> <span word="the">the</span> <span word="flow">flow</span> <span word="rate">rate</span> <span word="drops">drops</span> <span word="sharply">sharply</span>.</p><p> <span word="Treiber">Treiber</span>’<span word="s">s</span> <span word="model">model</span> <span word="of">of</span> <span word="a">a</span> <span word="marathon">marathon</span> <span word="uses">uses</span> <span word="this">this</span> <span word="same">same</span> <span word="principle">principle</span> <span word="that">that</span> <span word="the">the</span> <span word="flow">flow</span> <span word="rate">rate</span> <span word="first">first</span> <span word="increases">increases</span> <span word="and">and</span> <span word="then">then</span> <span word="decreases">decreases</span> <span word="as">as</span> <span word="the">the</span> <span word="density">density</span> <span word="of">of</span> <span word="runners">runners</span> <span word="increases">increases</span>, <span word="thanks">thanks</span> <span word="to">to</span> <span word="an">an</span> <span word="sudden">sudden</span> <span word="switch">switch</span> <span word="from">from</span> <span word="free">free</span> <span word="to">to</span> <span word="crowded">crowded</span> <span word="flow">flow</span>. <span word="He">He</span> <span word="assumes">assumes</span> <span word="that">that</span> <span word="there">there</span> <span word="is">is</span> <span word="a">a</span> <span word="range">range</span> <span word="of">of</span> <span word="different">different</span> <span word="preferred">preferred</span> <span word="speeds">speeds</span> <span word="for">for</span> <span word="different">different</span> <span word="runners">runners</span>, <span word="which">which</span> <span word="each">each</span> <span word="maintains">maintains</span> <span word="throughout">throughout</span> <span word="the">the</span> <span word="race">race</span>.<span word="With">With</span> <span word="just">just</span> <span word="these">these</span> <span word="factors">factors</span>, <span word="Treiber">Treiber</span> <span word="can">can</span> <span word="calculate">calculate</span> <span word="the">the</span> <span word="flow">flow</span> <span word="rate">rate</span> <span word="of">of</span> <span word="runners">runners</span>, <span word="knowing">knowing</span> <span word="the">the</span> 揷<span word="arrying">arrying</span> <span word="capacity">capacity</span>?<span word="s">s</span>(承载能力) <span word="at">at</span> <span word="each">each</span> <span word="point">point</span> <span word="on">on</span> <span word="the">the</span> <span word="route">route</span>.(<span word="which">which</span> <span word="means">means</span> <span word="those">those</span> <span word="at">at</span> <span word="the">the</span> <span word="back">back</span> <span word="have">have</span> <span word="to">to</span> <span word="wait">wait</span> <span word="until">until</span> <span word="those">those</span> <span word="in">in</span> <span word="front">front</span> <span word="have">have</span> <span word="moved">moved</span> <span word="forward">forward</span>)．<span word="Others">Others</span> <span word="assign">assign</span> <span word="runners">runners</span> <span word="to">to</span> <span word="various">various</span> <span word="groups">groups</span> <span word="according">according</span> <span word="to">to</span> <span word="ability">ability</span>, 6，000 <span word="participants">participants</span>.<span word="The">The</span> <span word="traditional">traditional</span> <span word="route">route</span> <span word="had">had</span> <span word="to">to</span> <span word="be">be</span> <span word="changed">changed</span> <span word="in">in</span> 2017，<span word="because">because</span> <span word="the">the</span> <span word="police">police</span> <span word="were">were</span> <span word="no">no</span> <span word="longer">longer</span> <span word="willing">willing</span> <span word="to">to</span> <span word="close">close</span> <span word="a">a</span> <span word="road">road</span> <span word="to">to</span> <span word="ensure">ensure</span> <span word="that">that</span> <span word="runners">runners</span> <span word="could">could</span> <span word="cross">cross</span> <span word="safely">safely</span>.<span word="It">It</span> <span word="could">could</span> <span word="pass">pass</span> <span word="either">either</span> <span word="over">over</span> <span word="a">a</span> 60<span word="m">m</span> <span word="wooden">wooden</span> <span word="bridge">bridge</span> <span word="or">or</span> <span word="through">through</span> <span word="a">a</span> <span word="tunnel">tunnel</span>.<span word="Treiber">Treiber</span> <span word="used">used</span> <span word="his">his</span> <span word="model">model</span> <span word="to">to</span> <span word="predict">predict</span> <span word="the">the</span> <span word="likely">likely</span> <span word="blocking">blocking</span> <span word="caused">caused</span> <span word="in">in</span> <span word="the">the</span> <span word="various">various</span> <span word="options">options</span>.<span word="The">The</span> <span word="model">model</span> <span word="predicted">predicted</span> <span word="that">that</span> <span word="a">a</span> <span word="mass">mass</span> <span word="start">start</span> <span word="would">would</span> <span word="risk">risk</span> <span word="an">an</span> <span word="overload">overload</span> <span word="of">of</span> <span word="runners">runners</span> <span word="if">if</span> <span word="the">the</span> <span word="bridge">bridge</span> <span word="were">were</span> <span word="to">to</span> <span word="be">be</span> <span word="used">used</span>.<span word="Only">Only</span> <span word="by">by</span> <span word="moving">moving</span> <span word="the">the</span> <span word="starting">starting</span> <span word="point">point</span> <span word="further">further</span> <span word="back">back</span> <span word="from">from</span> <span word="the">the</span> <span word="bridge">bridge</span> <span word="could">could</span> <span word="the">the</span> <span word="danger">danger</span> <span word="be">be</span> <span word="avoided">avoided</span>—<span word="and">and</span> <span word="even">even</span> <span word="then">then</span>, <span word="if">if</span> <span word="some">some</span> <span word="of">of</span> <span word="the">the</span> <span word="numbers">numbers</span> <span word="assumed">assumed</span> <span word="in">in</span> <span word="the">the</span> <span word="model">model</span> <span word="were">were</span> <span word="only">only</span> <span word="slightly">slightly</span> <span word="inaccurate">inaccurate</span>, <span word="there">there</span> <span word="was">was</span> <span word="still">still</span> <span word="a">a</span> <span word="risk">risk</span> <span word="of">of</span> <span word="jams">jams</span> <span word="at">at</span> <span word="the">the</span> <span word="bridge">bridge</span>.<span word="On">On</span> <span word="the">the</span> <span word="other">other</span> <span word="hand">hand</span>, <span word="no">no</span> <span word="dangerous">dangerous</span> <span word="blocking">blocking</span> <span word="seemed">seemed</span> <span word="likely">likely</span> <span word="for">for</span> <span word="the">the</span> <span word="tunnel">tunnel</span> <span word="route">route</span>.<span word="The">The</span> <span word="run">run</span> <span word="organizers">organizers</span> <span word="consulted">consulted</span> <span word="Treiber">Treiber</span>’<span word="s">s</span> <span word="team">team</span>, <span word="and">and</span> <span word="eventually">eventually</span> <span word="chose">chose</span> <span word="this">this</span> <span word="option">option</span>.</p>
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