英语六级考试冲刺练习阅读篇78
<p> <span word="Growth">Growth</span> <span word="of">of</span> <span word="trade">trade</span> <span word="will">will</span> <span word="depend">depend</span> <span word="greatly">greatly</span> <span word="on">on</span> <span word="availability">availability</span> <span word="of">of</span> <span word="energy">energy</span> <span word="sources">sources</span>. <span word="There">There</span> <span word="may">may</span> <span word="still">still</span> <span word="be">be</span> <span word="a">a</span> <span word="trillion">trillion</span> <span word="barrels">barrels</span> <span word="of">of</span> <span word="recoverable">recoverable</span> <span word="oil">oil</span> <span word="in">in</span> <span word="the">the</span> <span word="Middle">Middle</span> <span word="East">East</span>. <span word="But">But</span> <span word="the">the</span> <span word="oil">oil</span> <span word="crisis">crisis</span> <span word="of">of</span> 1974 <span word="has">has</span> 11 <span word="to">to</span> <span word="renewed">renewed</span> <span word="interest">interest</span> <span word="in">in</span> <span word="coal">coal</span> <span word="and">and</span> <span word="to">to</span> <span word="a">a</span> <span word="search">search</span> <span word="for">for</span> 12 <span word="sources">sources</span> <span word="of">of</span> <span word="energy">energy</span>. <span word="Solar">Solar</span>, <span word="geothermal">geothermal</span>, <span word="and">and</span> <span word="nuclear">nuclear</span> <span word="energy">energy</span> <span word="will">will</span> <span word="play">play</span> <span word="a">a</span> <span word="large">large</span> <span word="role">role</span> <span word="in">in</span> <span word="the">the</span> <span word="years">years</span> <span word="to">to</span> <span word="come">come</span>. <span word="Solar">Solar</span> <span word="energy">energy</span> <span word="is">is</span> <span word="available">available</span> <span word="in">in</span> 13 <span word="forms">forms</span>. <span word="Buildings">Buildings</span> <span word="can">can</span> <span word="be">be</span> <span word="heated">heated</span> <span word="and">and</span> <span word="cooled">cooled</span> <span word="by">by</span> <span word="direct">direct</span> <span word="use">use</span> <span word="of">of</span> <span word="solar">solar</span> <span word="radiation">radiation</span>, <span word="crops">crops</span> <span word="and">and</span> <span word="trees">trees</span>, <span word="which">which</span> <span word="are">are</span> <span word="the">the</span> <span word="most">most</span> <span word="efficient">efficient</span> <span word="converters">converters</span> <span word="of">of</span> <span word="sunlight">sunlight</span> <span word="into">into</span> <span word="energy">energy</span>, <span word="can">can</span> <span word="be">be</span> <span word="grown">grown</span> <span word="for">for</span> <span word="their">their</span> <span word="energy">energy</span> <span word="potential">potential</span>, <span word="wastes">wastes</span> <span word="can">can</span> <span word="be">be</span> <span word="burned">burned</span> <span word="as">as</span> 14 , <span word="sunlight">sunlight</span> <span word="can">can</span> <span word="be">be</span> <span word="converted">converted</span> <span word="into">into</span> <span word="DC">DC</span> <span word="electricity">electricity</span>, <span word="electric">electric</span> <span word="power">power</span> <span word="can">can</span> <span word="be">be</span> 15 <span word="from">from</span> <span word="the">the</span> <span word="sun">sun</span>-<span word="warmed">warmed</span> <span word="surface">surface</span> <span word="waters">waters</span> <span word="of">of</span> <span word="the">the</span> <span word="ocean">ocean</span>, <span word="and">and</span> <span word="lastly">lastly</span>, <span word="solar">solar</span> <span word="radiation">radiation</span> <span word="can">can</span> <span word="be">be</span> <span word="converted">converted</span> <span word="into">into</span> <span word="heat">heat</span> <span word="that">that</span> <span word="will">will</span> <span word="drive">drive</span> <span word="electric">electric</span> <span word="power">power</span> <span word="generators">generators</span>. <span word="Serious">Serious</span> <span word="problems">problems</span> <span word="still">still</span> <span word="remain">remain</span> <span word="as">as</span> <span word="to">to</span> 16 <span word="and">and</span> <span word="storage">storage</span> <span word="of">of</span> <span word="solar">solar</span> <span word="energy">energy</span>. <span word="Geothermal">Geothermal</span> <span word="energy">energy</span> <span word="is">is</span> <span word="the">the</span> <span word="energy">energy</span> <span word="contained">contained</span> <span word="within">within</span> <span word="the">the</span> <span word="earth">earth</span>. <span word="Heat">Heat</span> <span word="is">is</span> <span word="abundantly">abundantly</span> <span word="available">available</span> <span word="deep">deep</span> <span word="in">in</span> <span word="the">the</span> <span word="earths">earths</span> <span word="core">core</span> <span word="and">and</span> <span word="is">is</span> <span word="constantly">constantly</span> <span word="being">being</span> <span word="produced">produced</span>. <span word="However">However</span>, <span word="this">this</span> <span word="heat">heat</span> <span word="is">is</span> <span word="usually">usually</span> <span word="located">located</span> <span word="at">at</span> <span word="too">too</span> <span word="deep">deep</span> <span word="a">a</span> <span word="level">level</span> <span word="for">for</span> 17 <span word="exploitation">exploitation</span>. <span word="In">In</span> <span word="short">short</span>, <span word="very">very</span> <span word="little">little</span> <span word="is">is</span> <span word="known">known</span> <span word="on">on</span> <span word="the">the</span> <span word="use">use</span> <span word="of">of</span> <span word="geothermal">geothermal</span> <span word="energy">energy</span>, <span word="and">and</span> <span word="it">it</span> <span word="has">has</span> 18 <span word="been">been</span> <span word="exploited">exploited</span>. <span word="Nuclear">Nuclear</span> <span word="energy">energy</span> <span word="is">is</span> <span word="produced">produced</span> <span word="in">in</span> <span word="nuclear">nuclear</span> <span word="power">power</span> <span word="plants">plants</span>. <span word="At">At</span> <span word="these">these</span> <span word="plants">plants</span> <span word="atoms">atoms</span> <span word="of">of</span> <span word="uranium">uranium</span> <span word="are">are</span> <span word="split">split</span>, <span word="thus">thus</span> 19 <span word="masses">masses</span> <span word="of">of</span> <span word="energy">energy</span>. <span word="Another">Another</span> <span word="source">source</span> <span word="of">of</span> <span word="energyunder">energyunder</span> <span word="development">development</span> <span word="is">is</span> <span word="the">the</span> <span word="nuclear">nuclear</span> <span word="fusion">fusion</span> <span word="of">of</span> <span word="certain">certain</span> <span word="atoms">atoms</span> <span word="of">of</span> <span word="hydrogen">hydrogen</span>. <span word="This">This</span> <span word="could">could</span> <span word="eventually">eventually</span> 20 <span word="natural">natural</span> <span word="gas">gas</span> <span word="as">as</span> <span word="a">a</span> <span word="source">source</span> <span word="of">of</span> <span word="energy">energy</span>. <span word="A">A</span>. <span word="rarely">rarely</span> <span word="B">B</span>. <span word="transformation">transformation</span> <span word="C">C</span>. <span word="fuel">fuel</span> <span word="D">D</span>. <span word="replaceE">replaceE</span>. <span word="led">led</span> <span word="F">F</span>. <span word="alternative">alternative</span> <span word="G">G</span>. <span word="commercial">commercial</span> <span word="H">H</span>. <span word="brieflyI">brieflyI</span>. <span word="derived">derived</span> <span word="J">J</span>. <span word="various">various</span> <span word="K">K</span>. <span word="relieving">relieving</span> <span word="L">L</span>. <span word="releasingM">releasingM</span>. <span word="transportation">transportation</span> <span word="N">N</span>. <span word="financial">financial</span> <span word="O">O</span>. <span word="describedII">describedII</span>. <span word="E">E</span> 12. <span word="F">F</span> 13. <span word="J">J</span> 14. <span word="C">C</span> 15. <span word="I">I</span> 16. <span word="M">M</span> 17. <span word="G">G</span> 18. <span word="A">A</span> 19. <span word="L">L</span> 20. <span word="D">D</span></p>
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