2015考研英语阅读稀土与气候变化
<p> <span word="Rare">Rare</span> <span word="earths">earths</span> <span word="and">and</span> <span word="climate">climate</span> <span word="change">change</span></p><p> 稀土与气候变化</p><p> <span word="In">In</span> <span word="a">a</span> <span word="hole">hole</span>?</p><p> 陷入了危机?</p><p> <span word="Demand">Demand</span> <span word="for">for</span> <span word="some">some</span> <span word="rare">rare</span>-<span word="earth">earth</span> <span word="elements">elements</span> <span word="couldrapidly">couldrapidly</span> <span word="outstrip">outstrip</span> <span word="supply">supply</span></p><p> 某些稀土元素可能很快会供不应求</p><p> <span word="MANY">MANY</span> <span word="plans">plans</span> <span word="for">for</span> <span word="reducing">reducing</span> <span word="the">the</span> <span word="world">world</span> <span word="s">s</span> <span word="emissions">emissions</span> <span word="ofcarbon">ofcarbon</span> <span word="dioxide">dioxide</span>-<span word="at">at</span> <span word="least">least</span>, <span word="those">those</span> <span word="plans">plans</span> <span word="formulated">formulated</span> <span word="byenvironmentalists">byenvironmentalists</span> <span word="who">who</span> <span word="are">are</span> <span word="not">not</span> <span word="of">of</span> <span word="the">the</span> <span word="hair">hair</span>-<span word="shirt">shirt</span>, <span word="back">back</span>-<span word="to">to</span>-<span word="the">the</span>-<span word="caves">caves</span> <span word="persuasion">persuasion</span>-<span word="involvepeppering">involvepeppering</span> <span word="the">the</span> <span word="landscape">landscape</span> <span word="with">with</span> <span word="wind">wind</span> <span word="turbines">turbines</span> <span word="and">and</span> <span word="replacing">replacing</span> <span word="petrol">petrol</span>-<span word="guzzling">guzzling</span> <span word="vehicles">vehicles</span> <span word="withelectric">withelectric</span> <span word="ones">ones</span> <span word="charged">charged</span> <span word="up">up</span> <span word="using">using</span> <span word="energy">energy</span> <span word="gathered">gathered</span> <span word="from">from</span> <span word="renewable">renewable</span> <span word="resources">resources</span>. <span word="The">The</span> <span word="hope">hope</span> <span word="is">is</span> <span word="thatthe">thatthe</span> <span word="level">level</span> <span word="of">of</span> <span word="CO">CO</span>2 <span word="in">in</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span> <span word="can">can</span> <span word="thus">thus</span> <span word="be">be</span> <span word="kept">kept</span> <span word="below">below</span> <span word="what">what</span> <span word="is">is</span> <span word="widely">widely</span> <span word="agreed">agreed</span> <span word="to">to</span> <span word="be">be</span> <span word="theupper">theupper</span> <span word="limit">limit</span> <span word="for">for</span> <span word="a">a</span> <span word="tolerable">tolerable</span> <span word="level">level</span> <span word="of">of</span> <span word="global">global</span> <span word="warming">warming</span>, 450 <span word="parts">parts</span> <span word="per">per</span> <span word="million">million</span>.</p><p> 许多全球性减排二氧化碳的计划是要建造星罗棋布的风力涡轮发电机，并以再生能源发电为电动汽车充电，摈弃狂吞汽油的汽车。哦，至少那些并不坚决主张严酷节俭、回返穴居社会 [注] 的环保主义者是这样计划的。人们希望，这样一来，大气中<span word="CO">CO</span>2的含量可以保持在百万分之450以下。人们普遍认为，这就可以让全球气候变暖的程度处在可容忍的上限以下。</p><p> <span word="Wind">Wind</span> <span word="turbines">turbines</span> <span word="and">and</span> <span word="electric">electric</span> <span word="vehicles">vehicles</span>, <span word="however">however</span>, <span word="both">both</span> <span word="rely">rely</span> <span word="on">on</span> <span word="dysprosium">dysprosium</span> <span word="and">and</span> <span word="neodymium">neodymium</span> <span word="tomake">tomake</span> <span word="the">the</span> <span word="magnets">magnets</span> <span word="that">that</span> <span word="are">are</span> <span word="essential">essential</span> <span word="to">to</span> <span word="their">their</span> <span word="generators">generators</span> <span word="and">and</span> <span word="motors">motors</span>. <span word="These">These</span> <span word="two">two</span> <span word="elements">elements</span>,<span word="part">part</span> <span word="of">of</span> <span word="a">a</span> <span word="group">group</span> <span word="called">called</span> <span word="the">the</span> <span word="rare">rare</span>-<span word="earth">earth</span> <span word="metals">metals</span>, <span word="have">have</span> <span word="unusual">unusual</span> <span word="configurations">configurations</span> <span word="of">of</span> <span word="electronsorbiting">electronsorbiting</span> <span word="their">their</span> <span word="nuclei">nuclei</span>, <span word="and">and</span> <span word="thus">thus</span> <span word="unusually">unusually</span> <span word="powerful">powerful</span> <span word="magnetic">magnetic</span> <span word="properties">properties</span>. <span word="Finding">Finding</span> <span word="substituteswould">substituteswould</span> <span word="be">be</span> <span word="hard">hard</span>. <span word="Motors">Motors</span> <span word="or">or</span> <span word="generators">generators</span> <span word="whose">whose</span> <span word="magnets">magnets</span> <span word="were">were</span> <span word="made">made</span> <span word="of">of</span> <span word="other">other</span> <span word="materials">materials</span> <span word="would">would</span> <span word="beheavier">beheavier</span>, <span word="less">less</span> <span word="efficient">efficient</span> <span word="or">or</span> <span word="both">both</span>.</p>
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