2017届高考英语二轮专题总复习 阅读能力培养精品系列（二十五）
<p> 2017届高考英语二轮专题总复习阅读能力培养精品系列（二十五）</p><p> 阅读理解</p><p> <span word="A">A</span></p><p> <span word="With">With</span> <span word="petroleum">petroleum</span> <span word="reserves">reserves</span> (石油储量) <span word="decreasing">decreasing</span>, <span word="the">the</span> <span word="search">search</span> <span word="is">is</span> <span word="on">on</span> <span word="to">to</span> <span word="replace">replace</span> <span word="gas">gas</span> <span word="with">with</span> <span word="a">a</span> <span word="cleaner">cleaner</span>，<span word="greener">greener</span> <span word="alternative">alternative</span>. <span word="Though">Though</span> <span word="much">much</span> <span word="ecotalk">ecotalk</span> <span word="has">has</span> <span word="centered">centered</span> <span word="on">on</span> <span word="biofuels">biofuels</span> <span word="from">from</span> <span word="corn">corn</span> <span word="and">and</span> <span word="soybeans">soybeans</span>, <span word="the">the</span> <span word="biofuel">biofuel</span> <span word="that">that</span> <span word="looks">looks</span> <span word="more">more</span> <span word="likely">likely</span> <span word="to">to</span> <span word="replace">replace</span> <span word="petroleum">petroleum</span> <span word="comes">comes</span> <span word="from">from</span> <span word="a">a</span> <span word="most">most</span> <span word="unlikely">unlikely</span> <span word="source">source</span>: <span word="algae">algae</span>(藻类)．</p><p> <span word="A">A</span>lgae, like corn, soybeans, and other crops, grow via photosynthesis(光合作用) and can be processed into fuel oil. However, they yield 30 times more energy than land crops such as soybeans, according to the U．S. Department of Energy. Many algae species also can grow in saltwater and polluted water—while corn and soy require arable land and fresh water that will be in short supply as the world's population balloons.</p><p> “<span word="If">If</span> <span word="you">you</span> <span word="replaced">replaced</span> <span word="all">all</span> <span word="the">the</span> <span word="diesel">diesel</span>(柴油) <span word="in">in</span> <span word="the">the</span> <span word="U">U</span>．<span word="S">S</span>. <span word="with">with</span> <span word="soy">soy</span> <span word="biodiesel">biodiesel</span>, <span word="it">it</span> <span word="would">would</span> <span word="take">take</span> <span word="half">half</span> <span word="the">the</span> <span word="land">land</span> <span word="mass">mass</span> <span word="of">of</span> <span word="the">the</span> <span word="U">U</span>．<span word="S">S</span>. <span word="to">to</span> <span word="grow">grow</span> <span word="those">those</span> <span word="soybeans">soybeans</span>，”<span word="says">says</span> <span word="Matt">Matt</span> <span word="Caspari">Caspari</span>, <span word="chief">chief</span> <span word="executive">executive</span> <span word="of">of</span> <span word="Aurora">Aurora</span> <span word="Biofuels">Biofuels</span>, <span word="a">a</span> <span word="Berkeley">Berkeley</span>, <span word="Calif">Calif</span>-<span word="based">based</span> <span word="private">private</span> <span word="firm">firm</span> <span word="that">that</span> <span word="specializes">specializes</span> <span word="in">in</span> <span word="algae">algae</span> <span word="oil">oil</span> <span word="technology">technology</span>. <span word="On">On</span> <span word="the">the</span> <span word="other">other</span> <span word="hand">hand</span>, <span word="the">the</span> <span word="Energy">Energy</span> <span word="Department">Department</span> <span word="says">says</span> <span word="that">that</span> <span word="if">if</span> <span word="algae">algae</span> <span word="fuel">fuel</span> <span word="replaced">replaced</span> <span word="all">all</span> <span word="the">the</span> <span word="petroleum">petroleum</span> <span word="fuel">fuel</span> <span word="in">in</span> <span word="the">the</span> <span word="United">United</span> <span word="States">States</span>, <span word="it">it</span> <span word="would">would</span> <span word="require">require</span> 15,000 <span word="square">square</span> <span word="miles">miles</span>, <span word="which">which</span> <span word="is">is</span> <span word="a">a</span> <span word="few">few</span> <span word="thousand">thousand</span> <span word="miles">miles</span> <span word="larger">larger</span> <span word="than">than</span> <span word="Maryland">Maryland</span> (12,407 <span word="square">square</span> <span word="miles">miles</span>), <span word="the">the</span> 42<span word="nd">nd</span> <span word="state">state</span> <span word="in">in</span> <span word="land">land</span> <span word="area">area</span>.</p><p> <span word="A">A</span>nother bonus: Because algae can be grown just about anywhere in a closed space, they're being tested at several power plants across the nation as a carbon absorber. Smokestack emissions (烟囱排放物) can be pumped directly into the ponds, feeding the algae while keeping greenhouse gases out of the atmosphere.</p>
页:
[1]