GRE阅读难句背诵实例（五）
<p> 编辑点评： <span word="GRE">GRE</span>阅读的复习和作文的复习往往可以相辅相成，这里为大家精选了一些阅读中的句子，大家可以选择性地用在作文中作为一个例证。也可以参考句子的结构自己学着写一下结构较为复杂的句子。</p><p> 23.<span word="The">The</span> <span word="hydrologic">hydrologic</span> <span word="cycle">cycle</span>，<span word="a">a</span> <span word="major">major</span> <span word="topic">topic</span> <span word="in">in</span> <span word="this">this</span> <span word="science">science</span>，<span word="is">is</span> <span word="thecomplete">thecomplete</span> <span word="cycle">cycle</span> <span word="of">of</span> <span word="phenomena">phenomena</span> <span word="through">through</span> <span word="which">which</span> <span word="water">water</span> <span word="passes">passes</span>，<span word="beginning">beginning</span> <span word="asatmospheric">asatmospheric</span> <span word="water">water</span> <span word="vapor">vapor</span>，<span word="passing">passing</span> <span word="into">into</span> <span word="liquid">liquid</span> <span word="and">and</span> <span word="solid">solid</span> <span word="form">form</span> <span word="asprecipitation">asprecipitation</span>，<span word="thence">thence</span> <span word="along">along</span> <span word="and">and</span> <span word="into">into</span> <span word="the">the</span> <span word="ground">ground</span> <span word="surface">surface</span>，<span word="and">and</span> <span word="finallyagain">finallyagain</span> <span word="returning">returning</span> <span word="to">to</span> <span word="the">the</span> <span word="form">form</span> <span word="of">of</span> <span word="atmospheric">atmospheric</span> <span word="water">water</span> <span word="vapor">vapor</span> <span word="by">by</span> <span word="means">means</span> <span word="ofevaporation">ofevaporation</span> <span word="and">and</span> <span word="transpiration">transpiration</span>.</p><p> 水文循环，作为该学科中的一个主要课题，指的是水所经过的诸现象的整个循环过程，开始时是作为大气中的水蒸气，转而作为雨、雪、露、雹一类的降水量经过液体和固体形态，由此而沿着地层表面分布或进入地层表面，最终通过蒸发和散发作用再度回复到大气水蒸气的形态。</p><p> 24.<span word="The">The</span> <span word="historian">historian</span> <span word="Frederick">Frederick</span> <span word="J">J</span>. <span word="Turner">Turner</span> <span word="wrote">wrote</span> <span word="in">in</span> <span word="the">the</span> 1890 <span word="s">s</span> <span word="that">that</span> <span word="theagrarian">theagrarian</span> <span word="discontent">discontent</span> <span word="that">that</span> <span word="had">had</span> <span word="been">been</span> <span word="developing">developing</span> <span word="steadily">steadily</span> <span word="in">in</span> <span word="the">the</span> <span word="UnitedStates">UnitedStates</span> <span word="since">since</span> <span word="about">about</span> 1870 <span word="had">had</span> <span word="been">been</span> <span word="precipitated">precipitated</span> <span word="by">by</span> <span word="the">the</span> <span word="closing">closing</span> <span word="of">of</span> <span word="theinternal">theinternal</span> <span word="frontier">frontier</span> <span word="that">that</span> <span word="is">is</span>，<span word="the">the</span> <span word="depletion">depletion</span> <span word="of">of</span> <span word="available">available</span> <span word="new">new</span> <span word="land">land</span> <span word="neededfor">neededfor</span> <span word="further">further</span> <span word="expansion">expansion</span> <span word="of">of</span> <span word="the">the</span> <span word="American">American</span> <span word="farming">farming</span> <span word="system">system</span>.</p><p> 史学家弗雷德里克.杰.特纳于十九世纪九十年代著述道，美国约自18世纪70年代以来一直在持续不断发展的农民不满，由于国内边远地区的封闭而更趋加剧 亦即是说，美国农业系统进一步扩展所必需的可资利用的新土地几近耗竭。</p>
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