2013考研英语阅读100篇及剖析(十九)
<p> <span word="TEXT">TEXT</span> <span word="ONE">ONE</span></p><p> <span word="William">William</span> <span word="Illiam">Illiam</span> <span word="Morris">Morris</span> <span word="suggested">suggested</span> <span word="that">that</span> <span word="nothing">nothing</span> <span word="should">should</span> <span word="have">have</span> <span word="a">a</span> <span word="place">place</span> <span word="that">that</span> <span word="is">is</span> <span word="not">not</span> <span word="known">known</span> <span word="to">to</span> <span word="be">be</span> <span word="useful">useful</span> <span word="or">or</span> <span word="believed">believed</span> <span word="to">to</span> <span word="be">be</span> <span word="beautiful">beautiful</span>. <span word="Opals">Opals</span>, <span word="though">though</span>, <span word="might">might</span> <span word="be">be</span> <span word="both">both</span>. <span word="A">A</span> <span word="group">group</span> <span word="of">of</span> <span word="researchers">researchers</span> <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Southampton">Southampton</span>, <span word="in">in</span> <span word="England">England</span>, <span word="and">and</span> <span word="the">the</span> <span word="German">German</span> <span word="Plastics">Plastics</span> <span word="Institute">Institute</span> <span word="in">in</span> <span word="Darmstadt">Darmstadt</span>, <span word="led">led</span> <span word="by">by</span> <span word="Jeremy">Jeremy</span> <span word="Baumberg">Baumberg</span>, <span word="have">have</span> <span word="discovered">discovered</span> <span word="how">how</span> <span word="to">to</span> <span word="create">create</span> <span word="a">a</span> <span word="plastic">plastic</span> <span word="with">with</span> <span word="the">the</span> <span word="gemstones">gemstones</span> <span word="iridescent">iridescent</span> <span word="properties">properties</span>. <span word="Their">Their</span> <span word="invention">invention</span> <span word="could">could</span> <span word="be">be</span> <span word="used">used</span> <span word="to">to</span> <span word="make">make</span> <span word="a">a</span> <span word="sparkling">sparkling</span> <span word="substitute">substitute</span> <span word="for">for</span> <span word="paint">paint</span>, <span word="banknotes">banknotes</span> <span word="that">that</span> <span word="are">are</span> <span word="hard">hard</span> <span word="to">to</span> <span word="counterfeit">counterfeit</span> <span word="and">and</span> <span word="chemical">chemical</span> <span word="sensors">sensors</span> <span word="that">that</span> <span word="can">can</span> <span word="act">act</span> <span word="as">as</span> <span word="visible">visible</span> <span word="sell">sell</span>-<span word="by">by</span> <span word="dates">dates</span>.</p><p> <span word="Opals">Opals</span> <span word="get">get</span> <span word="their">their</span> <span word="milky">milky</span> <span word="sheen">sheen</span> <span word="and">and</span> <span word="rainbow">rainbow</span> <span word="sparkle">sparkle</span> <span word="from">from</span> <span word="the">the</span> <span word="way">way</span> <span word="light">light</span> <span word="is">is</span> <span word="scattered">scattered</span> <span word="by">by</span> <span word="the">the</span> <span word="tiny">tiny</span> <span word="crystals">crystals</span> <span word="that">that</span> <span word="form">form</span> <span word="them">them</span>. <span word="These">These</span> <span word="crystals">crystals</span> <span word="are">are</span> <span word="stacked">stacked</span> <span word="in">in</span> <span word="what">what</span> <span word="is">is</span> <span word="known">known</span> <span word="as">as</span> <span word="a">a</span> <span word="face">face</span>-<span word="centred">centred</span> <span word="cubic">cubic</span> <span word="structure">structure</span>. <span word="This">This</span> <span word="means">means</span> <span word="that">that</span> <span word="the">the</span> <span word="constituent">constituent</span> <span word="atoms">atoms</span> <span word="are">are</span> <span word="arranged">arranged</span> <span word="in">in</span> <span word="a">a</span> <span word="lattice">lattice</span> <span word="of">of</span> <span word="cubes">cubes</span>, <span word="with">with</span> <span word="one">one</span> <span word="extra">extra</span> <span word="atom">atom</span> <span word="sitting">sitting</span> <span word="at">at</span> <span word="the">the</span> <span word="centre">centre</span> <span word="of">of</span> <span word="each">each</span> <span word="cubes">cubes</span> <span word="six">six</span> <span word="faces">faces</span>. <span word="Light">Light</span> <span word="entering">entering</span> <span word="this">this</span> <span word="lattice">lattice</span> <span word="gets">gets</span> <span word="bounced">bounced</span> <span word="around">around</span> <span word="in">in</span> <span word="ways">ways</span> <span word="that">that</span> <span word="generate">generate</span> <span word="colour">colour</span> <span word="by">by</span> <span word="reinforcing">reinforcing</span> <span word="the">the</span> <span word="peaks">peaks</span> <span word="of">of</span> <span word="some">some</span> <span word="wavelengths">wavelengths</span> <span word="and">and</span> <span word="cancelling">cancelling</span> <span word="out">out</span> <span word="those">those</span> <span word="of">of</span> <span word="others">others</span>.</p><p> <span word="For">For</span> <span word="many">many</span> <span word="years">years</span> <span word="researchers">researchers</span> <span word="have">have</span> <span word="been">been</span> <span word="trying">trying</span> <span word="to">to</span> <span word="develop">develop</span> <span word="a">a</span> <span word="synthetic">synthetic</span> <span word="material">material</span> <span word="with">with</span> <span word="the">the</span> <span word="same">same</span> <span word="light">light</span>-<span word="scattering">scattering</span> <span word="properties">properties</span> <span word="as">as</span> <span word="an">an</span> <span word="opal">opal</span>, <span word="by">by</span> <span word="etching">etching</span> <span word="patterns">patterns</span> <span word="into">into</span> <span word="various">various</span> <span word="materials">materials</span>. <span word="That">That</span> <span word="approach">approach</span> <span word="has">has</span> <span word="failed">failed</span>. <span word="Instead">Instead</span>, <span word="Dr">Dr</span> <span word="Baumberg">Baumberg</span> <span word="has">has</span> <span word="built">built</span> <span word="his">his</span> <span word="opalescent">opalescent</span> <span word="material">material</span> <span word="from">from</span> <span word="scratch">scratch</span>. <span word="He">He</span> <span word="and">and</span> <span word="his">his</span> <span word="team">team</span> <span word="grew">grew</span> <span word="tiny">tiny</span> <span word="polystyrene">polystyrene</span> <span word="spheres">spheres</span> <span word="until">until</span> <span word="they">they</span> <span word="were">were</span> <span word="some">some</span> 200 <span word="nanometres">nanometres</span> <span word="across">across</span>, <span word="before">before</span> <span word="hardening">hardening</span> <span word="them">them</span> <span word="with">with</span> <span word="a">a</span> <span word="blast">blast</span> <span word="of">of</span> <span word="heat">heat</span>. <span word="They">They</span> <span word="then">then</span> <span word="coated">coated</span> <span word="the">the</span> <span word="spheres">spheres</span> <span word="with">with</span> <span word="a">a</span> <span word="sticky">sticky</span> <span word="polymer">polymer</span> <span word="before">before</span> <span word="heating">heating</span> <span word="them">them</span> <span word="again">again</span>. <span word="As">As</span> <span word="the">the</span> <span word="mixture">mixture</span> <span word="was">was</span> <span word="baked">baked</span>, <span word="the">the</span> <span word="spheres">spheres</span> <span word="moved">moved</span> <span word="naturally">naturally</span> <span word="into">into</span> <span word="a">a</span> <span word="face">face</span>-<span word="centred">centred</span> <span word="cubic">cubic</span> <span word="structure">structure</span>.</p>
页:
[1]