职称英语理工类考试考前每日一练(30)
<p> <span word="Salty">Salty</span> <span word="Rice">Rice</span> <span word="Plant">Plant</span> <span word="Boosts">Boosts</span> <span word="Harvests">Harvests</span></p><p> <span word="British">British</span> <span word="scientists">scientists</span> <span word="are">are</span> <span word="breeding">breeding</span> <span word="a">a</span> <span word="new">new</span> <span word="generation">generation</span> <span word="of">of</span> <span word="rice">rice</span> <span word="plants">plants</span> <span word="that">that</span> <span word="will">will</span> <span word="be">be</span> <span word="able">able</span> <span word="to">to</span> <span word="grow">grow</span> <span word="in">in</span> <span word="soil">soil</span> <span word="containing">containing</span> <span word="salt">salt</span> <span word="water">water</span>. <span word="Their">Their</span> <span word="work">work</span> <span word="may">may</span> <span word="enable">enable</span> <span word="abandoned">abandoned</span> <span word="farms">farms</span> <span word="to">to</span> <span word="become">become</span> <span word="productive">productive</span> <span word="once">once</span> <span word="more">more</span>.</p><p> <span word="Tim">Tim</span> <span word="Flowers">Flowers</span> <span word="and">and</span> <span word="Tony">Tony</span> <span word="Yeo">Yeo</span>, <span word="from">from</span> <span word="Sussex">Sussex</span> <span word="Universitys">Universitys</span> <span word="School">School</span> <span word="of">of</span> <span word="Biological">Biological</span> <span word="Sciences">Sciences</span>,<span word="have">have</span> <span word="spent">spent</span> <span word="several">several</span> <span word="years">years</span> <span word="researching">researching</span> <span word="how">how</span> <span word="crops">crops</span>, <span word="such">such</span> <span word="as">as</span> <span word="rice">rice</span>, <span word="could">could</span> <span word="be">be</span> <span word="made">made</span> <span word="to">to</span> <span word="grow">grow</span> <span word="in">in</span> <span word="water">water</span> <span word="that">that</span> <span word="has">has</span> <span word="become">become</span> <span word="salty">salty</span>.</p><p> <span word="The">The</span> <span word="pair">pair</span> <span word="have">have</span> <span word="recently">recently</span> <span word="begun">begun</span> <span word="a">a</span> <span word="three">three</span>-<span word="year">year</span> <span word="programme">programme</span>, <span word="funded">funded</span> <span word="by">by</span> <span word="the">the</span> <span word="Biotechnology">Biotechnology</span> <span word="and">and</span> <span word="Biological">Biological</span> <span word="Sciences">Sciences</span> <span word="Research">Research</span> <span word="Council">Council</span>, <span word="to">to</span> <span word="establish">establish</span> <span word="which">which</span> <span word="genes">genes</span> <span word="enable">enable</span> <span word="some">some</span> <span word="plants">plants</span> <span word="to">to</span> <span word="survive">survive</span> <span word="salty">salty</span> <span word="conditions">conditions</span>. <span word="The">The</span> <span word="aim">aim</span> <span word="is">is</span> <span word="to">to</span> <span word="breed">breed</span> <span word="this">this</span> <span word="capability">capability</span> <span word="into">into</span> <span word="crops">crops</span>, <span word="starting">starting</span> <span word="with">with</span> <span word="rice">rice</span>.</p><p> <span word="It">It</span> <span word="is">is</span> <span word="estimated">estimated</span> <span word="that">that</span> <span word="each">each</span> <span word="year">year</span> <span word="more">more</span> <span word="than">than</span> 10<span word="m">m</span> <span word="hectares">hectares</span> <span word="of">of</span> <span word="agricultural">agricultural</span> <span word="land">land</span> <span word="are">are</span> <span word="lost">lost</span> <span word="because">because</span> <span word="salt">salt</span> <span word="gets">gets</span> <span word="into">into</span> <span word="the">the</span> <span word="soil">soil</span> <span word="and">and</span> <span word="stunts">stunts</span> <span word="plants">plants</span>. <span word="The">The</span> <span word="problem">problem</span> <span word="is">is</span> <span word="caused">caused</span> <span word="by">by</span> <span word="several">several</span> <span word="factors">factors</span>. <span word="In">In</span> <span word="the">the</span> <span word="tropics">tropics</span>, <span word="mangroves">mangroves</span> <span word="that">that</span> <span word="create">create</span> <span word="swamps">swamps</span> <span word="and">and</span> <span word="traditionally">traditionally</span> <span word="formed">formed</span> <span word="barriers">barriers</span> <span word="to">to</span> <span word="sea">sea</span> <span word="water">water</span> <span word="have">have</span> <span word="been">been</span> <span word="cut">cut</span> <span word="down">down</span>. <span word="In">In</span> <span word="the">the</span> <span word="Mediterranean">Mediterranean</span>, <span word="a">a</span> <span word="series">series</span> <span word="of">of</span> <span word="droughts">droughts</span> <span word="have">have</span> <span word="caused">caused</span> <span word="the">the</span> <span word="water">water</span> <span word="table">table</span> <span word="to">to</span> <span word="drop">drop</span>, <span word="allowing">allowing</span> <span word="sea">sea</span> <span word="water">water</span> <span word="to">to</span> <span word="seep">seep</span> <span word="in">in</span>. <span word="In">In</span> <span word="Latin">Latin</span> <span word="America">America</span>, <span word="irrigation">irrigation</span> <span word="often">often</span> <span word="causes">causes</span> <span word="problems">problems</span> <span word="when">when</span> <span word="water">water</span> <span word="is">is</span> <span word="evaporated">evaporated</span> <span word="by">by</span> <span word="the">the</span> <span word="heat">heat</span>, <span word="leaving">leaving</span> <span word="salt">salt</span> <span word="deposits">deposits</span> <span word="behind">behind</span>.</p><p> <span word="Excess">Excess</span> <span word="salt">salt</span> <span word="then">then</span> <span word="enters">enters</span> <span word="the">the</span> <span word="plants">plants</span> <span word="and">and</span> <span word="prevents">prevents</span> <span word="them">them</span> <span word="functioning">functioning</span> <span word="normally">normally</span>. <span word="Heavy">Heavy</span> <span word="concentrations">concentrations</span> <span word="of">of</span> <span word="minerals">minerals</span> <span word="in">in</span> <span word="the">the</span> <span word="plants">plants</span> <span word="stop">stop</span> <span word="them">them</span> <span word="drawing">drawing</span> <span word="up">up</span> <span word="the">the</span> <span word="water">water</span> <span word="they">they</span> <span word="need">need</span> <span word="to">to</span> <span word="survive">survive</span>.</p>
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