2017届高考英语复习冲刺阶段经典讲义系列突破阅读理解及书面表达 (5)
<p> 美文赏析</p><p> <span word="Since">Since</span> 1884，<span word="Greenwich">Greenwich</span> <span word="Mean">Mean</span> <span word="Time">Time</span>(<span word="GMT">GMT</span>)<span word="has">has</span> <span word="been">been</span> <span word="the">the</span> <span word="international">international</span> <span word="standard">standard</span> <span word="for">for</span> <span word="timekeeping">timekeeping</span>，<span word="but">but</span> <span word="it">it</span> <span word="is">is</span> <span word="now">now</span> <span word="under">under</span> <span word="threat">threat</span> <span word="from">from</span> <span word="a">a</span> <span word="new">new</span> <span word="definition">definition</span>① <span word="of">of</span> <span word="time">time</span> <span word="itself">itself</span> <span word="based">based</span> <span word="not">not</span> <span word="on">on</span> <span word="the">the</span> <span word="rotation">rotation</span>(旋转)<span word="of">of</span> <span word="the">the</span> <span word="Earth">Earth</span>，<span word="but">but</span> <span word="on">on</span> <span word="atomic">atomic</span> <span word="clocks">clocks</span>.</p><p> <span word="In">In</span> <span word="January">January</span> <span word="the">the</span> <span word="International">International</span> <span word="Telecommunication">Telecommunication</span></p><p> <span word="Union">Union</span> <span word="will">will</span> <span word="meet">meet</span> <span word="in">in</span> <span word="Geneva">Geneva</span> <span word="to">to</span> <span word="vote">vote</span> <span word="on">on</span> <span word="whether">whether</span> <span word="to">to</span> <span word="adopt">adopt</span>② <span word="the">the</span> <span word="new">new</span> <span word="measure">measure</span>，<span word="despite">despite</span> <span word="protests">protests</span> <span word="from">from</span> <span word="Britain">Britain</span>.<span word="No">No</span> <span word="doubt">doubt</span>，<span word="the">the</span> <span word="question">question</span> <span word="has">has</span> <span word="hurt">hurt</span> <span word="Britain">Britain</span>'<span word="s">s</span> <span word="national">national</span> <span word="pride">pride</span>—<span word="particularly">particularly</span> <span word="when">when</span> <span word="the">the</span> <span word="British">British</span> <span word="believe">believe</span> <span word="their">their</span> <span word="old">old</span> <span word="rival">rival</span> <span word="France">France</span> <span word="is">is</span> <span word="leading">leading</span> <span word="the">the</span> <span word="push">push</span> <span word="to">to</span> <span word="change">change</span> <span word="from">from</span> <span word="GMT">GMT</span> <span word="to">to</span> <span word="the">the</span> <span word="new">new</span> <span word="time">time</span> <span word="standard">standard</span>.</p><p> <span word="GMT">GMT</span> <span word="is">is</span> <span word="based">based</span> <span word="on">on</span> <span word="the">the</span> <span word="passage">passage</span> <span word="of">of</span> <span word="the">the</span> <span word="sun">sun</span> <span word="over">over</span> <span word="the">the</span> <span word="zero">zero</span> <span word="meridian">meridian</span>(经线)<span word="line">line</span> <span word="at">at</span> <span word="the">the</span> <span word="Greenwich">Greenwich</span> <span word="Observatory">Observatory</span> <span word="in">in</span> <span word="southeast">southeast</span> <span word="London">London</span>，<span word="and">and</span> <span word="became">became</span> <span word="the">the</span> <span word="world">world</span> <span word="standard">standard</span> <span word="for">for</span> <span word="time">time</span> <span word="at">at</span> <span word="a">a</span> <span word="conference">conference</span> <span word="in">in</span> <span word="Washington">Washington</span> <span word="in">in</span> 1884.<span word="France">France</span> <span word="was">was</span> <span word="striving">striving</span>③ <span word="for">for</span> <span word="Paris">Paris</span> <span word="Mean">Mean</span> <span word="Time">Time</span> <span word="at">at</span> <span word="the">the</span> <span word="same">same</span> <span word="conference">conference</span>.</p><p> <span word="In">In</span> 1972 <span word="it">it</span> <span word="was">was</span> <span word="replaced">replaced</span> <span word="in">in</span> <span word="name">name</span> <span word="by">by</span> <span word="Universal">Universal</span> <span word="Coordinated">Coordinated</span> <span word="Time">Time</span>(<span word="UTC">UTC</span>)<span word="but">but</span> <span word="that">that</span> <span word="in">in</span> <span word="fact">fact</span> <span word="remained">remained</span> <span word="the">the</span> <span word="same">same</span> <span word="as">as</span> <span word="GMT">GMT</span>.</p><p> <span word="UTC">UTC</span> <span word="is">is</span> <span word="based">based</span> <span word="on">on</span> <span word="about">about</span> 400 <span word="atomic">atomic</span> <span word="clocks">clocks</span> <span word="around">around</span> <span word="the">the</span> <span word="world">world</span> <span word="but">but</span> <span word="then">then</span></p><p> <span word="corrected">corrected</span> <span word="with">with</span>“<span word="leap">leap</span> <span word="seconds">seconds</span>”<span word="to">to</span> <span word="correspond">correspond</span> <span word="to">to</span>④<span word="the">the</span> <span word="Earth">Earth</span>'<span word="s">s</span> <span word="rotational">rotational</span> <span word="speed">speed</span>，<span word="which">which</span> <span word="fluctuates">fluctuates</span>(波动)．<span word="As">As</span> <span word="a">a</span> <span word="result">result</span>，<span word="atomic">atomic</span> <span word="time">time</span> <span word="is">is</span> <span word="slowly">slowly</span> <span word="diverging">diverging</span>(偏离)<span word="from">from</span> <span word="GMT">GMT</span>.</p><p> <span word="The">The</span> <span word="tiny">tiny</span> <span word="differences">differences</span> <span word="between">between</span> <span word="Earth">Earth</span> <span word="speed">speed</span> <span word="and">and</span> <span word="atomic">atomic</span> <span word="speed">speed</span> <span word="have">have</span> <span word="become">become</span> <span word="a">a</span> <span word="problem">problem</span> <span word="for">for</span> <span word="GPS">GPS</span>，<span word="space">space</span></p><p> <span word="exploration">exploration</span> <span word="and">and</span> <span word="mobile">mobile</span> <span word="phone">phone</span> <span word="networks">networks</span> <span word="on">on</span> <span word="which">which</span> <span word="the">the</span> <span word="modern">modern</span> <span word="world">world</span> <span word="relies">relies</span>.</p>
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