2017年高考冲刺总复习：第6模块-阅读简答专题课件（湖南专用）
<p> 真题典例 专题三 │ 真题典例</p><p> </p><p> <span word="The">The</span> <span word="north">north</span> <span word="magnetic">magnetic</span> <span word="pole">pole</span> (磁极) <span word="is">is</span> <span word="no">no</span> <span word="longer">longer</span> <span word="a">a</span> <span word="resident">resident</span> <span word="of">of</span> <span word="Canada">Canada</span>. <span word="It">It</span> <span word="has">has</span> <span word="drifted">drifted</span> <span word="across">across</span> <span word="the">the</span> <span word="Canadian">Canadian</span> <span word="Arctic">Arctic</span> <span word="and">and</span> <span word="is">is</span> <span word="now">now</span> <span word="angling">angling</span> <span word="toward">toward</span> <span word="Siberia">Siberia</span>.</p><p> <span word="Not">Not</span> <span word="to">to</span> <span word="be">be</span> <span word="confused">confused</span> <span word="with">with</span> <span word="the">the</span> <span word="geographic">geographic</span> <span word="North">North</span> <span word="Pole">Pole</span>—<span word="the">the</span> <span word="northern">northern</span> <span word="extremity">extremity</span> <span word="of">of</span> <span word="the">the</span> <span word="Earth">Earth</span>’<span word="s">s</span> <span word="axis">axis</span>(地轴)，<span word="the">the</span> <span word="north">north</span> <span word="magnetic">magnetic</span> <span word="pole">pole</span> (<span word="where">where</span> <span word="the">the</span> <span word="Earth">Earth</span>’<span word="s">s</span> <span word="magnetic">magnetic</span> <span word="field">field</span> <span word="is">is</span> <span word="directed">directed</span> <span word="downward">downward</span>) <span word="is">is</span> <span word="moving">moving</span> <span word="due">due</span> <span word="to">to</span> <span word="natural">natural</span> <span word="changes">changes</span> <span word="in">in</span> <span word="the">the</span> <span word="Earth">Earth</span>’<span word="s">s</span> <span word="magnetic">magnetic</span> <span word="field">field</span>, <span word="a">a</span> <span word="process">process</span> <span word="that">that</span> <span word="originates">originates</span> <span word="about">about</span> 3, 000 <span word="kilometers">kilometers</span> <span word="below">below</span> <span word="our">our</span> <span word="feet">feet</span>, <span word="in">in</span> <span word="the">the</span> <span word="outer">outer</span> <span word="core">core</span>(核心)<span word="of">of</span> <span word="the">the</span> <span word="planet">planet</span>. <span word="But">But</span> <span word="scientists">scientists</span> <span word="are">are</span> <span word="now">now</span> <span word="noticing">noticing</span> <span word="that">that</span> <span word="the">the</span> <span word="magnetic">magnetic</span> 专题三 │ 真题典例</p><p> <span word="pole">pole</span> <span word="has">has</span> <span word="picked">picked</span> <span word="up">up</span> <span word="its">its</span> <span word="pace">pace</span>.</p><p> <span word="Over">Over</span> <span word="the">the</span> <span word="past">past</span> <span word="century">century</span>, <span word="the">the</span> <span word="pole">pole</span> <span word="has">has</span> <span word="been">been</span> <span word="migrating">migrating</span> <span word="at">at</span> <span word="an">an</span> <span word="average">average</span> <span word="speed">speed</span> <span word="of">of</span> <span word="about">about</span> 10 <span word="kilometers">kilometers</span> <span word="per">per</span> <span word="year">year</span>, <span word="says">says</span> <span word="Larry">Larry</span> <span word="Newitt">Newitt</span>, <span word="head">head</span> <span word="of">of</span> <span word="Geomagnetic">Geomagnetic</span> <span word="Laboratory">Laboratory</span> <span word="at">at</span> <span word="Natural">Natural</span> <span word="Resources">Resources</span> <span word="Canada">Canada</span> <span word="in">in</span> <span word="Ottawa">Ottawa</span>. <span word="Since">Since</span> <span word="the">the</span> 1970<span word="s">s</span>, <span word="this">this</span> <span word="speed">speed</span> <span word="has">has</span> <span word="increased">increased</span> <span word="to">to</span> <span word="about">about</span> 50 <span word="kilometers">kilometers</span> <span word="per">per</span> <span word="year">year</span>.</p><p> <span word="Scientists">Scientists</span> <span word="are">are</span> <span word="wondering">wondering</span> <span word="why">why</span> <span word="the">the</span> <span word="speed">speed</span> <span word="is">is</span> <span word="increasing">increasing</span>, <span word="says">says</span> <span word="Newitt">Newitt</span>. <span word="One">One</span> <span word="hypothesis">hypothesis</span> (假说) <span word="relates">relates</span> <span word="it">it</span> <span word="to">to</span> “<span word="magnetic">magnetic</span> <span word="jerks">jerks</span>”， <span word="sudden">sudden</span> <span word="shifts">shifts</span> (变化) <span word="in">in</span> <span word="the">the</span> <span word="rate">rate</span> <span word="of">of</span> <span word="change">change</span> <span word="of">of</span> <span word="the">the</span> <span word="magnetic">magnetic</span> <span word="field">field</span>. <span word="There">There</span> <span word="have">have</span> <span word="been">been</span> <span word="three">three</span> <span word="jerks">jerks</span> <span word="in">in</span> <span word="the">the</span> <span word="past">past</span> <span word="four">four</span> <span word="decades">decades</span>, <span word="each">each</span> <span word="one">one</span> <span word="correlating">correlating</span> <span word="to">to</span> <span word="an">an</span> <span word="increase">increase</span> <span word="in">in</span> <span word="speed">speed</span>.</p><p> 专题三 │ 真题典例</p><p> <span word="If">If</span> <span word="the">the</span> <span word="north">north</span> <span word="magnetic">magnetic</span> <span word="pole">pole</span> <span word="continues">continues</span> <span word="at">at</span> <span word="its">its</span> <span word="current">current</span> <span word="rate">rate</span>, <span word="it">it</span> <span word="could">could</span> <span word="reach">reach</span> <span word="Siberia">Siberia</span> <span word="by">by</span> 2056.</p>
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