历年GRE阅读材料中的难句精选100句(六)
<p> 编辑点评： 大家在复习<span word="GRE">GRE</span>作文时，把历年的阅读真题拿出来重新阅读和分析是非常好的一个复习方法，这里为大家精选的是<span word="GRE">GRE</span>历年考试的阅读部分的难句，如果大家可以花时间搞懂这些句子，相信对作文的提高一定有所帮助。</p><p> 51. <span word="The">The</span> <span word="best">best</span> <span word="evidence">evidence</span> <span word="for">for</span> <span word="the">the</span> <span word="layered">layered</span>-<span word="mantle">mantle</span> <span word="thesis">thesis</span> <span word="is">is</span> <span word="the">the</span> <span word="well">well</span>-<span word="established">established</span> <span word="fact">fact</span> <span word="that">that</span> <span word="volcanic">volcanic</span> <span word="rocks">rocks</span> <span word="found">found</span> <span word="on">on</span> <span word="oceanic">oceanic</span> <span word="islands">islands</span>，<span word="islands">islands</span> <span word="believed">believed</span> <span word="to">to</span> <span word="result">result</span> <span word="from">from</span> <span word="mantle">mantle</span> <span word="plumes">plumes</span> <span word="arising">arising</span> <span word="from">from</span> <span word="the">the</span> <span word="lower">lower</span> <span word="mantle">mantle</span>，<span word="are">are</span> <span word="composed">composed</span> <span word="of">of</span> <span word="material">material</span> <span word="fundamentally">fundamentally</span> <span word="different">different</span> <span word="from">from</span> <span word="that">that</span> <span word="of">of</span> <span word="the">the</span> <span word="mid">mid</span>-<span word="ocean">ocean</span> <span word="ridge">ridge</span> <span word="system">system</span>， <span word="whose">whose</span> <span word="source">source</span>，<span word="most">most</span> <span word="geologists">geologists</span> <span word="contend">contend</span>，<span word="is">is</span> <span word="the">the</span> <span word="upper">upper</span> <span word="mantle">mantle</span>.</p><p> 对于地幔分层论点来说，最好的证据乃这样一个确认的事实，即在那些海洋岛屿 这些岛屿据信是源于由下层地幔升上来的地幔柱状溶岩流 上发现的火山岩石，是由与海洋中部山脊系统的物质根本不同的物质构成的，而这一海洋中部山脊系统的成因，大多数地质学家论辩道，为上部地幔。</p><p> 难句类型：复杂修饰、插入语</p><p> 解释：本句前面的主干并不算难，即<span word="the">the</span> <span word="evidence">evidence</span> <span word="is">is</span> <span word="the">the</span> <span word="fact">fact</span> <span word="that">that</span>,难就难在<span word="fact">fact</span>之后说明<span word="fact">fact</span> 的同位语从句。此从句中既有大段插入语，又有从句，较为难读。同位语从句的主语是<span word="volcanic">volcanic</span> <span word="rocks">rocks</span>，主语后面的<span word="found">found</span> <span word="on">on</span> <span word="oceanic">oceanic</span> <span word="islands">islands</span>是分词修饰<span word="volcanic">volcanic</span> <span word="rocks">rocks</span>的;<span word="islands">islands</span>后面又有一个说明<span word="islands">islands</span>的同位语<span word="islands">islands</span> <span word="believed">believed</span> <span word="to">to</span> <span word="result">result</span> <span word="from">from</span> <span word="mantle">mantle</span> <span word="plumes">plumes</span> <span word="arising">arising</span> <span word="from">from</span> <span word="the">the</span> <span word="lower">lower</span> <span word="mantle">mantle</span>,此同位语实际起到一个分隔主谓的同位语的作用。其后是谓语动词<span word="are">are</span> <span word="composed">composed</span>/<span word="of">of</span> <span word="fundamentally">fundamentally</span> <span word="different">different</span> <span word="from">from</span> <span word="that">that</span> <span word="of">of</span> <span word="the">the</span> <span word="midocean">midocean</span> <span word="ridge">ridge</span> <span word="system">system</span>, <span word="whose">whose</span> <span word="source">source</span>, <span word="most">most</span> <span word="geologists">geologists</span> <span word="contend">contend</span>, <span word="is">is</span> <span word="the">the</span> <span word="upper">upper</span> <span word="mantle">mantle</span>。</p>
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