2015职称英语理工类阅读理解训练题(5)
<p> <span word="Sugar">Sugar</span> <span word="Power">Power</span> <span word="for">for</span> <span word="Cell">Cell</span> <span word="Phones">Phones</span></p><p> <span word="Using">Using</span> <span word="enzymes">enzymes</span> <span word="commonly">commonly</span> <span word="found">found</span> <span word="in">in</span> <span word="living">living</span> <span word="cells">cells</span>，<span word="a">a</span> <span word="new">new</span> <span word="type">type</span> <span word="of">of</span> <span word="fuel">fuel</span> <span word="cell">cell</span> <span word="produces">produces</span> <span word="small">small</span> <span word="amounts">amounts</span> <span word="of">of</span> <span word="electricity">electricity</span> <span word="from">from</span> <span word="sugar">sugar</span>.<span word="If">If</span> <span word="the">the</span> <span word="technology">technology</span> <span word="is">is</span> <span word="able">able</span> <span word="to">to</span> <span word="succeed">succeed</span> <span word="in">in</span> <span word="mass">mass</span> <span word="production">production</span>，<span word="you">you</span> <span word="may">may</span> <span word="some">some</span> <span word="day">day</span> <span word="share">share</span> <span word="your">your</span> <span word="sweet">sweet</span> <span word="drinks">drinks</span> <span word="with">with</span> <span word="your">your</span> <span word="cell">cell</span> <span word="phone">phone</span>.</p><p> <span word="When">When</span> <span word="researchers">researchers</span> <span word="previously">previously</span> <span word="used">used</span> <span word="enzymes">enzymes</span> <span word="in">in</span> <span word="fuel">fuel</span> <span word="cells">cells</span>，<span word="they">they</span> <span word="had">had</span> <span word="trouble">trouble</span> <span word="keeping">keeping</span> <span word="them">them</span> <span word="active">active</span>，<span word="says">says</span> <span word="Shelley">Shelley</span> <span word="D">D</span>.<span word="Minteer">Minteer</span> <span word="of">of</span> <span word="St">St</span> <span word="Louis">Louis</span> <span word="University">University</span>1.<span word="Whereas">Whereas</span> <span word="biological">biological</span> <span word="cells">cells</span> <span word="continually">continually</span> <span word="produce">produce</span> <span word="fresh">fresh</span> <span word="enzymes">enzymes</span>，<span word="theres">theres</span> <span word="no">no</span> <span word="mechanism">mechanism</span> <span word="in">in</span> <span word="fuel">fuel</span> <span word="cells">cells</span> <span word="to">to</span> <span word="replace">replace</span> <span word="enzymes">enzymes</span> <span word="as">as</span> <span word="they">they</span> <span word="quickly">quickly</span> <span word="degrade">degrade</span>.</p><p> <span word="In">In</span> <span word="the">the</span> <span word="new">new</span> <span word="fuel">fuel</span> <span word="Cell">Cell</span>，<span word="tiny">tiny</span> <span word="polymer">polymer</span> <span word="bags">bags</span> <span word="of">of</span> <span word="enzyme">enzyme</span> <span word="are">are</span> <span word="embedded">embedded</span> <span word="in">in</span> <span word="a">a</span> <span word="membrane">membrane</span> <span word="that">that</span> <span word="coats">coats</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="electrodes">electrodes</span>.<span word="When">When</span> <span word="glucose">glucose</span> <span word="from">from</span> <span word="a">a</span> <span word="sugary">sugary</span> <span word="liquid">liquid</span> <span word="gets">gets</span> <span word="into">into</span> <span word="a">a</span> <span word="pocket">pocket</span>，<span word="the">the</span> <span word="enzyme">enzyme</span> <span word="oxidizes">oxidizes</span> <span word="it">it</span>，<span word="releasing">releasing</span> <span word="electrons">electrons</span> <span word="and">and</span> <span word="protons">protons</span>.<span word="The">The</span> <span word="electrons">electrons</span> <span word="cross">cross</span> <span word="the">the</span> <span word="membrane">membrane</span> <span word="and">and</span> <span word="enter">enter</span> <span word="a">a</span> <span word="wire">wire</span> <span word="through">through</span> <span word="which">which</span> <span word="they">they</span> <span word="travel">travel</span> <span word="to">to</span> <span word="the">the</span> <span word="other">other</span> <span word="electrode">electrode</span>，<span word="where">where</span> <span word="they">they</span> <span word="react">react</span> <span word="with">with</span>.<span word="oxygen">oxygen</span> <span word="in">in</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span> <span word="to">to</span> <span word="produce">produce</span> <span word="water">water</span>.<span word="The">The</span> <span word="flow">flow</span> <span word="of">of</span> <span word="electrons">electrons</span> <span word="through">through</span> <span word="the">the</span> <span word="wire">wire</span> <span word="constitutes">constitutes</span> <span word="an">an</span> <span word="electrical">electrical</span> <span word="current">current</span> <span word="that">that</span> <span word="can">can</span> <span word="generate">generate</span> <span word="power">power</span>.</p><p> <span word="Sugar">Sugar</span>-<span word="eating">eating</span> <span word="fuel">fuel</span> <span word="cells">cells</span> <span word="could">could</span> <span word="be">be</span> <span word="an">an</span> <span word="efficient">efficient</span> <span word="way">way</span> <span word="to">to</span> <span word="make">make</span> <span word="electricity">electricity</span>.<span word="Sugar">Sugar</span> <span word="is">is</span> <span word="easy">easy</span> <span word="to">to</span> <span word="find">find</span>. <span word="And">And</span> <span word="the">the</span> <span word="new">new</span> <span word="fuel">fuel</span> <span word="cells">cells</span> <span word="that">that</span> <span word="run">run</span> <span word="on">on</span> <span word="it">it</span> <span word="are">are</span> <span word="biodegradable">biodegradable</span>，<span word="so">so</span> <span word="the">the</span> <span word="technology">technology</span> <span word="wouldnt">wouldnt</span> <span word="hurt">hurt</span> <span word="the">the</span> <span word="environment">environment</span>.<span word="The">The</span> <span word="scientists">scientists</span> <span word="are">are</span> <span word="now">now</span> <span word="trying">trying</span> <span word="to">to</span> <span word="use">use</span> <span word="different">different</span> <span word="enzymes">enzymes</span> <span word="that">that</span> <span word="will">will</span> <span word="get">get</span> <span word="more">more</span> <span word="power">power</span> <span word="from">from</span> <span word="sugar">sugar</span>.<span word="They">They</span> <span word="predict">predict</span> <span word="that">that</span> <span word="popular">popular</span> <span word="products">products</span> <span word="may">may</span> <span word="be">be</span> <span word="using">using</span> <span word="the">the</span> <span word="new">new</span> <span word="technology">technology</span> <span word="in">in</span> <span word="as">as</span> <span word="little">little</span> <span word="as">as</span> 3 <span word="years">years</span>.</p>
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