2016届广东省天河区高考英语二轮语法复习精讲精练：阅读理解21
<p> 阅读理解精讲精炼21</p><p> 116.</p><p> <span word="Harvard">Harvard</span> <span word="researchers">researchers</span> <span word="have">have</span> <span word="created">created</span> <span word="a">a</span> <span word="tough">tough</span>, <span word="low">low</span><span word="cost">cost</span>, <span word="biodegradable">biodegradable</span>(可生物降解的) <span word="material">material</span> <span word="inspired">inspired</span> <span word="by">by</span> <span word="insects">insects</span>' <span word="hard">hard</span> <span word="outer">outer</span> <span word="shells">shells</span>. <span word="The">The</span> <span word="material">material</span>'<span word="s">s</span> <span word="inventors">inventors</span> <span word="say">say</span> <span word="it">it</span> <span word="has">has</span> <span word="a">a</span> <span word="number">number</span> <span word="of">of</span> <span word="possible">possible</span> <span word="uses">uses</span> <span word="and">and</span> <span word="someday">someday</span> <span word="could">could</span> <span word="provide">provide</span> <span word="a">a</span> <span word="more">more</span> <span word="environmentally">environmentally</span> <span word="friendly">friendly</span> <span word="alternative">alternative</span> <span word="to">to</span> <span word="plastic">plastic</span>. <span word="The">The</span> <span word="material">material</span>, <span word="made">made</span> <span word="from">from</span> <span word="shrimp">shrimp</span> (虾) <span word="shells">shells</span> <span word="and">and</span> <span word="proteins">proteins</span> <span word="produced">produced</span> <span word="from">from</span> <span word="silk">silk</span>, <span word="is">is</span> <span word="called">called</span> “<span word="shrilk">shrilk</span>.” <span word="It">It</span> <span word="is">is</span> <span word="thin">thin</span>, <span word="clear">clear</span>, <span word="flexible">flexible</span> <span word="and">and</span> <span word="strong">strong</span>.</p><p> <span word="A">A</span> <span word="major">major</span> <span word="benefit">benefit</span> <span word="of">of</span> <span word="the">the</span> <span word="material">material</span> <span word="is">is</span> <span word="its">its</span> <span word="biodegradability">biodegradability</span>. <span word="Plastic">Plastic</span>'<span word="s">s</span> <span word="toughness">toughness</span> <span word="and">and</span> <span word="flexibility">flexibility</span> <span word="represented">represented</span> <span word="a">a</span> <span word="revolution">revolution</span> <span word="in">in</span> <span word="materials">materials</span> <span word="science">science</span> <span word="during">during</span> <span word="the">the</span> 1950<span word="s">s</span> <span word="and">and</span> '60<span word="s">s</span>. <span word="Decades">Decades</span> <span word="later">later</span>, <span word="however">however</span>, <span word="plastic">plastic</span>'<span word="s">s</span> <span word="very">very</span> <span word="durability">durability</span> (耐用性) <span word="is">is</span> <span word="raising">raising</span> <span word="questions">questions</span> <span word="about">about</span> <span word="how">how</span> <span word="appropriate">appropriate</span> <span word="it">it</span> <span word="is">is</span> <span word="for">for</span> <span word="one">one</span><span word="time">time</span> <span word="products">products</span> <span word="such">such</span> <span word="as">as</span> <span word="plastic">plastic</span> <span word="bags">bags</span>, <span word="or">or</span> <span word="short">short</span><span word="lived">lived</span> <span word="consumer">consumer</span> <span word="goods">goods</span>, <span word="used">used</span> <span word="in">in</span> <span word="the">the</span> <span word="home">home</span> <span word="for">for</span> <span word="a">a</span> <span word="few">few</span> <span word="years">years</span> <span word="and">and</span> <span word="then">then</span> <span word="cast">cast</span> <span word="into">into</span> <span word="a">a</span> <span word="landfill">landfill</span> <span word="where">where</span> <span word="they">they</span> <span word="will">will</span> <span word="degrade">degrade</span> <span word="for">for</span> <span word="centuries">centuries</span>. <span word="What">What</span> <span word="is">is</span> <span word="the">the</span> <span word="point">point</span> <span word="of">of</span> <span word="making">making</span> <span word="something">something</span> <span word="that">that</span> <span word="lasts">lasts</span> 1,000 <span word="years">years</span>?</p><p> <span word="Shrilk">Shrilk</span> <span word="not">not</span> <span word="only">only</span> <span word="will">will</span> <span word="degrade">degrade</span> <span word="in">in</span> <span word="a">a</span> <span word="landfill">landfill</span>, <span word="but">but</span> <span word="its">its</span> <span word="basic">basic</span> <span word="components">components</span> <span word="are">are</span> <span word="used">used</span> <span word="as">as</span> <span word="fertilizer">fertilizer</span> (肥料), <span word="and">and</span> <span word="so">so</span> <span word="will">will</span> <span word="enrich">enrich</span> <span word="the">the</span> <span word="soil">soil</span>.</p><p> <span word="Shrilk">Shrilk</span> <span word="has">has</span> <span word="great">great</span> <span word="potential">potential</span>, <span word="the">the</span> <span word="inventors">inventors</span> <span word="said">said</span>. <span word="Materials">Materials</span> <span word="from">from</span> <span word="which">which</span> <span word="it">it</span> <span word="is">is</span> <span word="made">made</span> <span word="are">are</span> <span word="plentiful">plentiful</span> <span word="in">in</span> <span word="nature">nature</span>, <span word="found">found</span> <span word="in">in</span> <span word="everything">everything</span> <span word="ranging">ranging</span> <span word="from">from</span> <span word="shrimp">shrimp</span> <span word="shells">shells</span>, <span word="insect">insect</span> <span word="bodies">bodies</span> <span word="to">to</span> <span word="living">living</span> <span word="plants">plants</span>. <span word="That">That</span> <span word="makes">makes</span> <span word="shrilk">shrilk</span> <span word="low">low</span><span word="cost">cost</span>, <span word="and">and</span> <span word="its">its</span> <span word="mass">mass</span></p><p> <span word="production">production</span> <span word="possible">possible</span> <span word="should">should</span> <span word="it">it</span> <span word="be">be</span> <span word="used">used</span> <span word="for">for</span> <span word="products">products</span> <span word="demanding">demanding</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="material">material</span>.</p>
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