【高考调研】2017届高三英语一轮复习（外研版）课时规范训练18（含解析）
<p> 课时规范训练(单独成册)</p><p> 训练(十八)</p><p> Ⅰ.阅读理解</p><p> 阅读下列短文，从每题所给的四个选项(<span word="A">A</span>、<span word="B">B</span>、<span word="C">C</span>、<span word="D">D</span>)中，选出最佳选项。</p><p> <span word="A">A</span></p><p> 初中学习网<span word="Imagine">Imagine</span> <span word="cleaning">cleaning</span> <span word="leaves">leaves</span> <span word="on">on</span> <span word="Christmas">Christmas</span>，<span word="or">or</span> <span word="sweeping">sweeping</span> <span word="snow">snow</span> <span word="on">on</span> <span word="Memorial">Memorial</span> <span word="Day">Day</span>.<span word="What">What</span> <span word="about">about</span> <span word="going">going</span> <span word="for">for</span> <span word="a">a</span> <span word="swim">swim</span> <span word="on">on</span> <span word="Thanksgiving">Thanksgiving</span>?</p><p> <span word="Without">Without</span> <span word="leap">leap</span> <span word="day">day</span>，<span word="which">which</span> <span word="takes">takes</span> <span word="place">place</span> <span word="every">every</span> <span word="four">four</span> <span word="years">years</span>，<span word="that">that</span> <span word="could">could</span> <span word="happen">happen</span>.“<span word="If">If</span> <span word="we">we</span> <span word="didn">didn</span>’<span word="t">t</span> <span word="have">have</span> <span word="leap">leap</span> <span word="years">years</span>，<span word="our">our</span> <span word="calendar">calendar</span> <span word="would">would</span> <span word="be">be</span> <span word="totally">totally</span> <span word="scrambled">scrambled</span> (搅乱)，” <span word="says">says</span> <span word="Geoff">Geoff</span> <span word="Chester">Chester</span> <span word="of">of</span> <span word="the">the</span> <span word="U">U</span>．<span word="S">S</span>.<span word="Naval">Naval</span> <span word="Observatory">Observatory</span> <span word="in">in</span> <span word="Washington">Washington</span> <span word="D">D</span>．<span word="C">C</span>.，<span word="the">the</span> <span word="nation">nation</span>’<span word="s">s</span> <span word="official">official</span> <span word="timekeepers">timekeepers</span>.</p><p> <span word="Our">Our</span> <span word="calendar">calendar</span> <span word="is">is</span> <span word="normally">normally</span> 365 <span word="days">days</span> <span word="long">long</span>.<span word="It">It</span> <span word="was">was</span> <span word="created">created</span> <span word="to">to</span> <span word="match">match</span> <span word="the">the</span> <span word="cycles">cycles</span> <span word="of">of</span> <span word="the">the</span> <span word="seasons">seasons</span>.<span word="But">But</span> <span word="Roman">Roman</span> <span word="Dictator">Dictator</span> <span word="Julius">Julius</span> <span word="Caesar">Caesar</span> <span word="noticed">noticed</span> <span word="a">a</span> <span word="problem">problem</span>：<span word="The">The</span> <span word="Earth">Earth</span> <span word="doesn">doesn</span>’<span word="t">t</span> <span word="circle">circle</span> <span word="the">the</span> <span word="sun">sun</span> <span word="in">in</span> <span word="exactly">exactly</span> 365 <span word="days">days</span>.<span word="It">It</span> <span word="actually">actually</span> <span word="takes">takes</span> <span word="about">about</span> 365.2422 <span word="days">days</span>.<span word="He">He</span> <span word="figured">figured</span> <span word="out">out</span> <span word="that">that</span> <span word="the">the</span> <span word="extra">extra</span> <span word="fraction">fraction</span> <span word="of">of</span> <span word="a">a</span> <span word="day">day</span> <span word="would">would</span> <span word="cause">cause</span> <span word="the">the</span> <span word="calendar">calendar</span> <span word="to">to</span> <span word="grow">grow</span> <span word="apart">apart</span> <span word="from">from</span> <span word="the">the</span> <span word="seasons">seasons</span> <span word="over">over</span> <span word="time">time</span>.<span word="Over">Over</span> 100 <span word="years">years</span>，<span word="the">the</span> <span word="seasons">seasons</span> <span word="would">would</span> <span word="shift">shift</span> <span word="about">about</span> 24 <span word="days">days</span>.<span word="Spring">Spring</span> <span word="would">would</span> <span word="start">start</span> <span word="on">on</span> <span word="April">April</span> 13 <span word="instead">instead</span> <span word="of">of</span> <span word="March">March</span> 20.</p><p> <span word="Caesar">Caesar</span> <span word="used">used</span> <span word="math">math</span> <span word="to">to</span> <span word="figure">figure</span> <span word="out">out</span> <span word="a">a</span> <span word="way">way</span> <span word="to">to</span> <span word="stop">stop</span> <span word="the">the</span> <span word="calendar">calendar</span> <span word="from">from</span> <span word="shifting">shifting</span>.<span word="He">He</span> <span word="decided">decided</span> <span word="to">to</span> <span word="add">add</span> <span word="an">an</span> <span word="extra">extra</span> <span word="day">day</span> <span word="to">to</span> <span word="the">the</span> <span word="month">month</span> <span word="of">of</span> <span word="February">February</span> <span word="every">every</span> <span word="four">four</span> <span word="years">years</span>.<span word="His">His</span> <span word="idea">idea</span> <span word="helped">helped</span> <span word="keep">keep</span> <span word="the">the</span> <span word="seasons">seasons</span> <span word="and">and</span> <span word="calendar">calendar</span> <span word="matched">matched</span> <span word="up">up</span>.<span word="Even">Even</span> <span word="so">so</span>，<span word="it">it</span> <span word="still">still</span> <span word="wasn">wasn</span>’<span word="t">t</span> <span word="perfect">perfect</span>.</p><p> <span word="In">In</span> 1582，<span word="Pope">Pope</span> <span word="Gregory">Gregory</span> <span word="XIII">XIII</span> <span word="worked">worked</span> <span word="on">on</span> <span word="Caesar">Caesar</span>’<span word="s">s</span> <span word="idea">idea</span>.<span word="His">His</span> <span word="calendar">calendar</span>，<span word="called">called</span> <span word="the">the</span> <span word="Gregorian">Gregorian</span> <span word="calendar">calendar</span>，<span word="dictates">dictates</span> <span word="that">that</span> <span word="every">every</span> <span word="year">year</span> <span word="that">that</span> <span word="is">is</span> <span word="evenly">evenly</span> <span word="divided">divided</span> <span word="by">by</span> 4 <span word="is">is</span> <span word="a">a</span> <span word="leap">leap</span> <span word="year">year</span>.<span word="Turn">Turn</span><span word="of">of</span><span word="the">the</span><span word="century">century</span> <span word="years">years</span>，<span word="or">or</span> <span word="years">years</span> <span word="ending">ending</span> <span word="in">in</span> “00，” <span word="would">would</span> <span word="not">not</span> <span word="be">be</span> <span word="leap">leap</span> <span word="years">years</span> <span word="unless">unless</span> <span word="they">they</span> <span word="could">could</span> <span word="be">be</span> <span word="divided">divided</span> <span word="evenly">evenly</span> <span word="by">by</span> 400.<span word="This">This</span> <span word="helps">helps</span> <span word="keep">keep</span> <span word="the">the</span> <span word="calendar">calendar</span> <span word="in">in</span> <span word="balance">balance</span> <span word="with">with</span> <span word="the">the</span> <span word="orbit">orbit</span> <span word="of">of</span> <span word="the">the</span> <span word="Earth">Earth</span>.<span word="Today">Today</span>，<span word="we">we</span> <span word="still">still</span> <span word="use">use</span> <span word="the">the</span> <span word="Gregorian">Gregorian</span> <span word="calendar">calendar</span>.<span word="In">In</span> <span word="about">about</span> 3,000 <span word="years">years</span>，<span word="the">the</span> <span word="calendar">calendar</span> <span word="will">will</span> <span word="be">be</span> <span word="only">only</span> <span word="one">one</span> <span word="day">day</span> <span word="out">out</span> <span word="of">of</span> <span word="step">step</span> <span word="with">with</span> <span word="the">the</span> <span word="seasons">seasons</span>.<span word="It">It</span>’<span word="s">s</span> <span word="still">still</span> <span word="not">not</span> <span word="perfect">perfect</span>，<span word="but">but</span> <span word="mathematicians">mathematicians</span> <span word="decided">decided</span> <span word="it">it</span> <span word="was">was</span> <span word="as">as</span> <span word="close">close</span> <span word="as">as</span> <span word="we">we</span> <span word="could">could</span> <span word="get">get</span>.</p>
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