2015考研英语阅读耐盐大米
<p> <span word="Salt">Salt</span>-<span word="tolerant">tolerant</span> <span word="rice">rice</span></p><p> 耐盐大米</p><p> <span word="Nuclear">Nuclear</span>-<span word="powered">powered</span> <span word="crops">crops</span>.</p><p> 核动力粮食。</p><p> <span word="Physics">Physics</span> <span word="meets">meets</span> <span word="biology">biology</span> <span word="in">in</span> <span word="a">a</span> <span word="project">project</span> <span word="to">to</span> <span word="breed">breed</span> <span word="better">better</span> <span word="strains">strains</span> <span word="of">of</span> <span word="rice">rice</span>.</p><p> 物理学与生物学的碰撞--优质大米培植。</p><p> <span word="THOSE">THOSE</span> <span word="who">who</span> <span word="turn">turn</span> <span word="their">their</span> <span word="noses">noses</span> <span word="up">up</span> <span word="at">at</span> <span word="genetically">genetically</span> <span word="modified">modified</span> <span word="food">food</span> <span word="seldom">seldom</span> <span word="seem">seem</span> <span word="to">to</span> <span word="consider">consider</span> <span word="thatall">thatall</span> <span word="crops">crops</span> <span word="are">are</span> <span word="genetically">genetically</span> <span word="modified">modified</span>. <span word="The">The</span> <span word="difference">difference</span> <span word="between">between</span> <span word="a">a</span> <span word="wild">wild</span> <span word="plant">plant</span> <span word="and">and</span> <span word="one">one</span> <span word="that">that</span> <span word="servessome">servessome</span> <span word="human">human</span> <span word="end">end</span> <span word="is">is</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="selective">selective</span> <span word="breeding">breeding</span>-<span word="the">the</span> <span word="picking">picking</span> <span word="and">and</span> <span word="combining">combining</span> <span word="over">over</span> <span word="the">the</span> <span word="years">years</span> <span word="ofmutations">ofmutations</span> <span word="that">that</span> <span word="result">result</span> <span word="in">in</span> <span word="bigger">bigger</span> <span word="seeds">seeds</span>, <span word="tastier">tastier</span> <span word="fruit">fruit</span> <span word="or">or</span> <span word="whatever">whatever</span> <span word="else">else</span> <span word="is">is</span> <span word="required">required</span>.</p><p> 对转基因食物不屑一顾的人似乎忽视了一个事实：所有粮食都属于转基因食物。野生植物与供人食用的植物之间的不同之处在于后者经过了层层筛选和培植，也就是经过多年的突变，将优良品相进行选择并组合，以培育出更大的种子，更甜的果实，或者人类需要的其他结果。</p><p> <span word="Nor">Nor</span>, <span word="these">these</span> <span word="days">days</span>, <span word="are">are</span> <span word="those">those</span> <span word="mutations">mutations</span> <span word="there">there</span> <span word="by">by</span> <span word="accident">accident</span>. <span word="They">They</span> <span word="are">are</span>, <span word="rather">rather</span>, <span word="deliberatelyinduced">deliberatelyinduced</span>, <span word="usually">usually</span> <span word="by">by</span> <span word="exposing">exposing</span> <span word="seeds">seeds</span> <span word="to">to</span> <span word="radiation">radiation</span>. <span word="And">And</span> <span word="that">that</span> <span word="is">is</span> <span word="exactly">exactly</span> <span word="what">what</span> <span word="Tomoko">Tomoko</span> <span word="Abe">Abe</span> <span word="andher">andher</span> <span word="colleagues">colleagues</span> <span word="at">at</span> <span word="the">the</span> <span word="Riken">Riken</span> <span word="Nishina">Nishina</span> <span word="Centre">Centre</span> <span word="for">for</span> <span word="Accelerator">Accelerator</span>-<span word="Based">Based</span> <span word="Science">Science</span> <span word="in">in</span> <span word="Saitama">Saitama</span>, <span word="outsideTokyo">outsideTokyo</span>, <span word="are">are</span> <span word="doing">doing</span> <span word="with">with</span> <span word="rice">rice</span>. <span word="The">The</span> <span word="difference">difference</span> <span word="is">is</span> <span word="that">that</span> <span word="Dr">Dr</span> <span word="Abe">Abe</span> <span word="is">is</span> <span word="not">not</span> <span word="using">using</span> <span word="namby">namby</span>-<span word="pamby">pamby</span> <span word="X">X</span>-<span word="raysand">raysand</span> <span word="gamma">gamma</span> <span word="rays">rays</span> <span word="to">to</span> <span word="mutate">mutate</span> <span word="her">her</span> <span word="crop">crop</span>, <span word="as">as</span> <span word="is">is</span> <span word="the">the</span> <span word="way">way</span> <span word="in">in</span> <span word="most">most</span> <span word="other">other</span> <span word="countries">countries</span>. <span word="Instead">Instead</span> <span word="she">she</span> <span word="issticking">issticking</span> <span word="them">them</span> <span word="in">in</span> <span word="a">a</span> <span word="particle">particle</span> <span word="accelerator">accelerator</span> <span word="and">and</span> <span word="bombarding">bombarding</span> <span word="them">them</span> <span word="with">with</span> <span word="heavy">heavy</span> <span word="ions">ions</span>-<span word="large">large</span> <span word="atoms">atoms</span> <span word="thathave">thathave</span> <span word="been">been</span> <span word="stripped">stripped</span> <span word="down">down</span> <span word="to">to</span> <span word="their">their</span> <span word="nuclei">nuclei</span> <span word="by">by</span> <span word="the">the</span> <span word="removal">removal</span> <span word="of">of</span> <span word="their">their</span> <span word="electrons">electrons</span>. <span word="This">This</span> <span word="producesbetween">producesbetween</span> <span word="ten">ten</span> <span word="and">and</span> 100 <span word="times">times</span> <span word="as">as</span> <span word="many">many</span> <span word="mutations">mutations</span> <span word="as">as</span> <span word="the">the</span> <span word="traditional">traditional</span> <span word="method">method</span>, <span word="and">and</span> <span word="thusincreases">thusincreases</span> <span word="the">the</span> <span word="chances">chances</span> <span word="of">of</span> <span word="blundering">blundering</span> <span word="across">across</span> <span word="some">some</span> <span word="useful">useful</span> <span word="ones">ones</span>.</p>
页:
[1]