2015考研英语阅读延长寿命
<p> <span word="Extending">Extending</span> <span word="lifespan">lifespan</span> <span word="Thanks">Thanks</span>, <span word="Mum">Mum</span>!</p><p> 延长寿命 谢啦，老妈!</p><p> <span word="An">An</span> <span word="obscure">obscure</span> <span word="group">group</span> <span word="of">of</span> <span word="animals">animals</span> <span word="may">may</span> <span word="reveal">reveal</span> <span word="the">the</span> <span word="secret">secret</span> <span word="of">of</span> <span word="elongating">elongating</span> <span word="life">life</span></p><p> 一群不为人知的动物可能会揭开长寿之谜</p><p> <span word="THE">THE</span> <span word="one">one</span> <span word="sure">sure</span> <span word="way">way</span> <span word="to">to</span> <span word="prolong">prolong</span> <span word="an">an</span> <span word="animal">animal</span> <span word="s">s</span> <span word="life">life</span> <span word="is">is</span>, <span word="paradoxically">paradoxically</span>, <span word="to">to</span> <span word="starve">starve</span> <span word="it">it</span>. <span word="Caloricrestriction">Caloricrestriction</span> , <span word="as">as</span> <span word="it">it</span> <span word="is">is</span> <span word="known">known</span> <span word="in">in</span> <span word="the">the</span> <span word="trade">trade</span>, <span word="works">works</span> <span word="for">for</span> <span word="everything">everything</span> <span word="from">from</span> <span word="threadworms">threadworms</span> <span word="tomammals">tomammals</span> . <span word="So">So</span> <span word="it">it</span> <span word="is">is</span> <span word="no">no</span> <span word="surprise">surprise</span> <span word="that">that</span> <span word="it">it</span> <span word="also">also</span> <span word="works">works</span> <span word="for">for</span> <span word="a">a</span> <span word="group">group</span> <span word="of">of</span> <span word="small">small</span> <span word="creatures">creatures</span> <span word="known">known</span> <span word="asrotifers">asrotifers</span>. <span word="If">If</span> <span word="that">that</span> <span word="were">were</span> <span word="the">the</span> <span word="only">only</span> <span word="result">result</span> <span word="of">of</span> <span word="Shugo">Shugo</span> <span word="Watabe">Watabe</span> <span word="s">s</span> <span word="experiments">experiments</span> <span word="on">on</span> <span word="the">the</span> <span word="critters">critters</span>, <span word="at">at</span> <span word="theUniversity">theUniversity</span> <span word="of">of</span> <span word="Tokyo">Tokyo</span>, <span word="it">it</span> <span word="would">would</span> <span word="scarcely">scarcely</span> <span word="be">be</span> <span word="worth">worth</span> <span word="reporting">reporting</span>. <span word="What">What</span> <span word="makes">makes</span> <span word="this">this</span> <span word="news">news</span> <span word="is">is</span> <span word="that">that</span> <span word="theoffspring">theoffspring</span> <span word="of">of</span> <span word="the">the</span> <span word="rotifers">rotifers</span> <span word="in">in</span> <span word="question">question</span> <span word="also">also</span> <span word="lived">lived</span> <span word="longer">longer</span> <span word="than">than</span> <span word="normal">normal</span>. <span word="And">And</span> <span word="thatthe">thatthe</span> <span word="inheritanceof">inheritanceof</span> <span word="an">an</span> <span word="acquired">acquired</span> <span word="characteristicis">characteristicis</span> <span word="quite">quite</span> <span word="startling">startling</span>.</p><p> 矛盾的是，延长动物寿命的方法，竟然是使其挨饿。科学界的同行都知道，有名的 热量限制 法则对小至线虫，大至哺乳动物的动物界都适用。所以当该条法则运用到一群名叫轮虫的生物上也就不足为奇了。如果东京大学的修吾渡部的轮虫实验仅是如此的话，也就没有报道的价值了。具有资讯价值的是，上述轮虫后代的生命也比普通轮虫要长。那后天的从父辈继承下的特质实在很令人吃惊。</p><p> <span word="Rotifers">Rotifers</span> <span word="are">are</span> <span word="unusual">unusual</span> <span word="in">in</span> <span word="that">that</span> <span word="they">they</span> <span word="often">often</span> <span word="reproduce">reproduce</span> <span word="by">by</span> <span word="parthenogenesis">parthenogenesis</span> . <span word="A">A</span> <span word="parthenogenetic">parthenogenetic</span> <span word="population">population</span> <span word="is">is</span>, <span word="by">by</span> <span word="definition">definition</span>,<span word="all">all</span> <span word="female">female</span> <span word="and">and</span> <span word="the">the</span> <span word="result">result</span>, <span word="give">give</span> <span word="or">or</span> <span word="take">take</span> <span word="the">the</span> <span word="odd">odd</span> <span word="mutation">mutation</span>, <span word="is">is</span> <span word="that">that</span> <span word="a">a</span> <span word="rotifer">rotifer</span> <span word="s">s</span> <span word="daughters">daughters</span> <span word="aregenetically">aregenetically</span> <span word="identical">identical</span> <span word="to">to</span> <span word="her">her</span>. <span word="That">That</span> <span word="makes">makes</span> <span word="rotifers">rotifers</span> <span word="convenient">convenient</span> <span word="subjects">subjects</span> <span word="for">for</span> <span word="studies">studies</span> <span word="of">of</span> <span word="thecontroversial">thecontroversial</span> <span word="idea">idea</span> <span word="that">that</span> <span word="characteristics">characteristics</span> <span word="acquired">acquired</span> <span word="during">during</span> <span word="an">an</span> <span word="individual">individual</span> <span word="s">s</span> <span word="life">life</span> <span word="can">can</span> <span word="be">be</span> <span word="passeddown">passeddown</span> <span word="the">the</span> <span word="generations">generations</span> <span word="in">in</span> <span word="ways">ways</span> <span word="that">that</span> <span word="are">are</span> <span word="independent">independent</span> <span word="of">of</span> <span word="mutations">mutations</span> <span word="in">in</span> <span word="the">the</span> <span word="DNA">DNA</span>.</p>
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