阅读理解考试《综合类》职称英语练习题以及答案(1)
<p> <span word="An">An</span> <span word="underground">underground</span> <span word="revolution">revolution</span> <span word="begins">begins</span> <span word="this">this</span> <span word="winter">winter</span>.<span word="with">with</span> <span word="the">the</span> <span word="flipof">flipof</span> <span word="a">a</span> <span word="switch">switch</span>，30，000</p><p> <span word="homes">homes</span> <span word="in">in</span> <span word="one">one</span> <span word="part">part</span> <span word="of">of</span> <span word="Detroit">Detroit</span> <span word="will">will</span> <span word="soon">soon</span> <span word="become">become</span> <span word="the">the</span> <span word="first">first</span> <span word="in">in</span> <span word="the">the</span> <span word="country">country</span> <span word="to">to</span> <span word="receive">receive</span> <span word="electricity">electricity</span> <span word="transmitted">transmitted</span> <span word="by">by</span> <span word="ice">ice</span>.<span word="cold">cold</span> <span word="high">high</span>.<span word="performance">performance</span> <span word="cables">cables</span>.<span word="Other">Other</span> <span word="American">American</span> <span word="cities">cities</span> <span word="are">are</span> <span word="expected">expected</span> <span word="to">to</span> <span word="follow">follow</span> <span word="Detroits">Detroits</span> <span word="example">example</span> <span word="in">in</span> <span word="the">the</span> <span word="years">years</span> <span word="ahead">ahead</span>.<span word="which">which</span> <span word="could">could</span> <span word="conserve">conserve</span> <span word="enormous">enormous</span> <span word="amounts">amounts</span> <span word="of">of</span> <span word="power">power</span>.</p><p> <span word="The">The</span> <span word="new">new</span> <span word="electrical">electrical</span> <span word="cables">cables</span> <span word="at">at</span> <span word="the">the</span> <span word="Frisbie">Frisbie</span> <span word="power">power</span> <span word="station">station</span> <span word="in">in</span> <span word="Detroit">Detroit</span> <span word="are">are</span> <span word="revolutionary">revolutionary</span> <span word="because">because</span> <span word="they">they</span> <span word="are">are</span> <span word="made">made</span> <span word="of">of</span> <span word="superconductors">superconductors</span>.<span word="A">A</span> <span word="superconductor">superconductor</span> <span word="is">is</span> <span word="a">a</span> <span word="material">material</span> <span word="that">that</span> <span word="transmits">transmits</span> <span word="electricity">electricity</span> <span word="with">with</span> <span word="little">little</span> <span word="or">or</span> <span word="no">no</span> <span word="resistance">resistance</span>.<span word="Resistance">Resistance</span> <span word="is">is</span> <span word="the">the</span> <span word="degree">degree</span> <span word="to">to</span> <span word="which">which</span> <span word="a">a</span> <span word="substance">substance</span> <span word="resists">resists</span> <span word="electric">electric</span> <span word="current">current</span>.<span word="All">All</span> <span word="common">common</span> <span word="electrical">electrical</span> <span word="conductors">conductors</span> <span word="have">have</span> <span word="a">a</span> <span word="certain">certain</span> <span word="amount">amount</span> <span word="of">of</span> <span word="electrical">electrical</span> <span word="resistance">resistance</span>.<span word="They">They</span> <span word="convert">convert</span> <span word="at">at</span> <span word="least">least</span> <span word="some">some</span> <span word="of">of</span> <span word="the">the</span> <span word="electrical">electrical</span> <span word="energy">energy</span> <span word="passing">passing</span> <span word="through">through</span> <span word="them">them</span> <span word="into">into</span> <span word="waste">waste</span> <span word="heat">heat</span>.<span word="Superconductors">Superconductors</span> <span word="dont">dont</span>?</p><p> <span word="No">No</span> <span word="one">one</span> <span word="understands">understands</span> <span word="how">how</span> <span word="superconductivity">superconductivity</span> <span word="works">works</span>.<span word="It">It</span> <span word="just">just</span> <span word="does">does</span>. <span word="Making">Making</span> <span word="superconductors">superconductors</span> <span word="isnt">isnt</span> <span word="easy">easy</span>.<span word="A">A</span> <span word="superconductor">superconductor</span> <span word="material">material</span> <span word="has">has</span> <span word="to">to</span> <span word="be">be</span> <span word="cooled">cooled</span> <span word="to">to</span> <span word="an">an</span> <span word="extremely">extremely</span> <span word="low">low</span> <span word="temperature">temperature</span> <span word="to">to</span> 10<span word="se">se</span> <span word="its">its</span> <span word="resistance">resistance</span>.<span word="The">The</span> <span word="first">first</span> <span word="superconductors">superconductors</span>，<span word="made">made</span> <span word="more">more</span> <span word="than">than</span> 50 <span word="years">years</span> <span word="ago">ago</span>，<span word="had">had</span> <span word="to">to</span> <span word="be">be</span> <span word="cooled">cooled</span> <span word="to">to</span> -263 <span word="degrees">degrees</span> <span word="Celsius">Celsius</span> <span word="before">before</span> <span word="they">they</span> <span word="lost">lost</span> <span word="their">their</span> <span word="resistance">resistance</span>.<span word="Newer">Newer</span> <span word="superconducting">superconducting</span> <span word="materials">materials</span> 10<span word="se">se</span> <span word="their">their</span> <span word="resistance">resistance</span> <span word="at">at</span> -143 <span word="degrees">degrees</span> <span word="Celsius">Celsius</span>.</p><p> <span word="The">The</span> <span word="superconductors">superconductors</span> <span word="cable">cable</span> <span word="installed">installed</span> <span word="at">at</span> <span word="the">the</span> <span word="Frisbie">Frisbie</span> <span word="station">station</span> <span word="is">is</span> <span word="made">made</span> <span word="of">of</span> <span word="a">a</span> <span word="ceramic">ceramic</span> <span word="material">material</span> <span word="that">that</span> <span word="contains">contains</span> <span word="copper">copper</span>.<span word="oxygen">oxygen</span>.<span word="bismuth">bismuth</span>。<span word="strontium">strontium</span>。<span word="and">and</span> <span word="calcium">calcium</span>。<span word="A">A</span> <span word="ceramic">ceramic</span> <span word="is">is</span> <span word="a">a</span> <span word="hard">hard</span>.<span word="strong">strong</span> <span word="compound">compound</span> <span word="made">made</span> <span word="from">from</span> <span word="clay">clay</span> <span word="or">or</span> <span word="minerals">minerals</span>.<span word="The">The</span> <span word="superconducting">superconducting</span> <span word="ceramic">ceramic</span> <span word="has">has</span> <span word="been">been</span> <span word="fashioned">fashioned</span> <span word="into">into</span> <span word="a">a</span> <span word="tape">tape</span> <span word="that">that</span> <span word="is">is</span> <span word="wrapped">wrapped</span> <span word="lengthwise">lengthwise</span> <span word="around">around</span> <span word="a">a</span> <span word="long">long</span> <span word="tube">tube</span> <span word="filled">filled</span> <span word="with">with</span> <span word="liquid">liquid</span> <span word="nitrogen">nitrogen</span>.</p>
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