考研英语阅读理解精读100篇UNIT22
<p> <span word="Although">Although</span> <span word="it">it</span> <span word="symbolises">symbolises</span> <span word="a">a</span> <span word="bright">bright</span> <span word="idea">idea</span>, <span word="the">the</span> <span word="traditional">traditional</span> <span word="incandescent">incandescent</span> <span word="light">light</span> <span word="bulb">bulb</span> <span word="is">is</span> <span word="a">a</span> <span word="dud">dud</span>. <span word="It">It</span> <span word="wastes">wastes</span> <span word="huge">huge</span> <span word="amounts">amounts</span> <span word="of">of</span> <span word="electricity">electricity</span>, <span word="radiating">radiating</span> 95% <span word="of">of</span> <span word="the">the</span> <span word="energy">energy</span> <span word="it">it</span> <span word="consumes">consumes</span> <span word="as">as</span> <span word="heat">heat</span> <span word="rather">rather</span> <span word="than">than</span> <span word="light">light</span>. <span word="Its">Its</span> <span word="life">life</span> <span word="is">is</span> <span word="also">also</span> <span word="relatively">relatively</span> <span word="short">short</span>, <span word="culminating">culminating</span> <span word="in">in</span> <span word="a">a</span> <span word="dull">dull</span> <span word="pop">pop</span> <span word="as">as</span> <span word="its">its</span> <span word="filament">filament</span> <span word="fractures">fractures</span>. <span word="Now">Now</span> <span word="a">a</span> <span word="team">team</span> <span word="of">of</span> <span word="researchers">researchers</span> <span word="has">has</span> <span word="devised">devised</span> <span word="a">a</span> <span word="light">light</span> <span word="bulb">bulb</span> <span word="that">that</span> <span word="is">is</span> <span word="not">not</span> <span word="only">only</span> <span word="much">much</span> <span word="more">more</span> <span word="energy">energy</span>-<span word="efficient">efficient</span> <span word="it">it</span> <span word="is">is</span> <span word="also">also</span> <span word="expected">expected</span> <span word="to">to</span> <span word="last">last</span> <span word="longer">longer</span> <span word="than">than</span> <span word="the">the</span> <span word="devices">devices</span> <span word="into">into</span> <span word="which">which</span> <span word="it">it</span> <span word="is">is</span> <span word="inserted">inserted</span>. <span word="Moreover">Moreover</span>, <span word="the">the</span> <span word="lamp">lamp</span> <span word="could">could</span> <span word="be">be</span> <span word="used">used</span> <span word="for">for</span> <span word="rear">rear</span>-<span word="projection">projection</span> <span word="televisions">televisions</span> <span word="as">as</span> <span word="well">well</span> <span word="as">as</span> <span word="general">general</span> <span word="illumination">illumination</span>.</p><p> <span word="The">The</span> <span word="trick">trick</span> <span word="to">to</span> <span word="a">a</span> <span word="longer">longer</span> <span word="life">life</span>, <span word="for">for</span> <span word="light">light</span> <span word="bulbs">bulbs</span> <span word="at">at</span> <span word="least">least</span>, <span word="is">is</span> <span word="to">to</span> <span word="ensure">ensure</span> <span word="that">that</span> <span word="the">the</span> <span word="lamp">lamp</span> <span word="has">has</span> <span word="no">no</span> <span word="electrodes">electrodes</span>. <span word="Although">Although</span> <span word="electrodes">electrodes</span> <span word="are">are</span> <span word="undeniably">undeniably</span> <span word="convenient">convenient</span> <span word="for">for</span> <span word="plugging">plugging</span> <span word="bulbs">bulbs</span> <span word="directly">directly</span> <span word="into">into</span> <span word="the">the</span> <span word="lighting">lighting</span> <span word="system">system</span>, <span word="they">they</span> <span word="are">are</span> <span word="also">also</span> <span word="the">the</span> <span word="main">main</span> <span word="reason">reason</span> <span word="why">why</span> <span word="lamps">lamps</span> <span word="fail">fail</span>. <span word="The">The</span> <span word="electrodes">electrodes</span> <span word="wear">wear</span> <span word="out">out</span>. <span word="They">They</span> <span word="can">can</span> <span word="react">react</span> <span word="chemically">chemically</span> <span word="with">with</span> <span word="the">the</span> <span word="gas">gas</span> <span word="inside">inside</span> <span word="the">the</span> <span word="light">light</span> <span word="bulb">bulb</span>, <span word="making">making</span> <span word="it">it</span> <span word="grow">grow</span> <span word="dimmer">dimmer</span>. <span word="They">They</span> <span word="are">are</span> <span word="also">also</span> <span word="difficult">difficult</span> <span word="to">to</span> <span word="seal">seal</span> <span word="into">into</span> <span word="the">the</span> <span word="structure">structure</span> <span word="of">of</span> <span word="the">the</span> <span word="bulb">bulb</span>, <span word="making">making</span> <span word="the">the</span> <span word="rupture">rupture</span> <span word="of">of</span> <span word="these">these</span> <span word="seals">seals</span> <span word="another">another</span> <span word="potential">potential</span> <span word="source">source</span> <span word="of">of</span> <span word="failure">failure</span>.</p><p> <span word="Scientists">Scientists</span> <span word="working">working</span> <span word="for">for</span> <span word="Ceravision">Ceravision</span>, <span word="a">a</span> <span word="company">company</span> <span word="based">based</span> <span word="in">in</span> <span word="Milton">Milton</span> <span word="Keynes">Keynes</span>, <span word="in">in</span> <span word="Britain">Britain</span>, <span word="have">have</span> <span word="designed">designed</span> <span word="a">a</span> <span word="new">new</span> <span word="form">form</span> <span word="of">of</span> <span word="lamp">lamp</span> <span word="that">that</span> <span word="eliminates">eliminates</span> <span word="the">the</span> <span word="need">need</span> <span word="for">for</span> <span word="electrodes">electrodes</span>. <span word="Their">Their</span> <span word="device">device</span> <span word="uses">uses</span> <span word="microwaves">microwaves</span> <span word="to">to</span> <span word="transform">transform</span> <span word="electricity">electricity</span> <span word="into">into</span> <span word="light">light</span>. <span word="It">It</span> <span word="consists">consists</span> <span word="of">of</span> <span word="a">a</span> <span word="relatively">relatively</span> <span word="small">small</span> <span word="lump">lump</span> <span word="of">of</span> <span word="aluminium">aluminium</span> <span word="oxide">oxide</span> <span word="into">into</span> <span word="which">which</span> <span word="a">a</span> <span word="hole">hole</span> <span word="has">has</span> <span word="been">been</span> <span word="bored">bored</span>. <span word="When">When</span> <span word="the">the</span> <span word="aluminium">aluminium</span> <span word="oxide">oxide</span> <span word="is">is</span> <span word="bombarded">bombarded</span> <span word="with">with</span> <span word="microwaves">microwaves</span> <span word="generated">generated</span> <span word="from">from</span> <span word="the">the</span> <span word="same">same</span> <span word="sort">sort</span> <span word="of">of</span> <span word="device">device</span> <span word="that">that</span> <span word="powers">powers</span> <span word="a">a</span> <span word="microwave">microwave</span> <span word="oven">oven</span>, <span word="a">a</span> <span word="concentrated">concentrated</span> <span word="electric">electric</span> <span word="field">field</span> <span word="is">is</span> <span word="created">created</span> <span word="inside">inside</span> <span word="the">the</span> <span word="void">void</span>.</p>
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