2014年职称英语理工类B级阅读理解精华练习(9)
<p> <span word="Clone">Clone</span> <span word="Farm">Farm</span></p><p> <span word="Factory">Factory</span> <span word="farming">farming</span> <span word="could">could</span> <span word="soon">soon</span> <span word="enter">enter</span> <span word="a">a</span> <span word="new">new</span> <span word="era">era</span> <span word="of">of</span> <span word="mass">mass</span> <span word="production">production</span>. <span word="Companies">Companies</span> <span word="in">in</span> <span word="the">the</span> <span word="US">US</span> <span word="are">are</span> <span word="developing">developing</span> <span word="the">the</span> <span word="technology">technology</span> <span word="needed">needed</span> <span word="to">to</span> <span word="clone">clone</span> <span word="chickens">chickens</span> <span word="on">on</span> <span word="a">a</span> <span word="massive">massive</span> <span word="scale">scale</span>. <span word="Once">Once</span> <span word="a">a</span> <span word="chicken">chicken</span> <span word="with">with</span> <span word="desirable">desirable</span> <span word="traits">traits</span> <span word="has">has</span> <span word="been">been</span> <span word="bred">bred</span> <span word="or">or</span> <span word="genetically">genetically</span> <span word="engineered">engineered</span>, <span word="tens">tens</span> <span word="of">of</span> <span word="thousands">thousands</span> <span word="of">of</span> <span word="eggs">eggs</span>, <span word="which">which</span> <span word="will">will</span> <span word="hatch">hatch</span> <span word="into">into</span> <span word="identical">identical</span> <span word="copies">copies</span>, <span word="could">could</span> <span word="roll">roll</span> <span word="off">off</span> <span word="the">the</span> <span word="production">production</span> <span word="lines">lines</span> <span word="every">every</span> <span word="hour">hour</span>. <span word="Billions">Billions</span> <span word="of">of</span> <span word="clones">clones</span> <span word="could">could</span> <span word="be">be</span> <span word="produced">produced</span> <span word="each">each</span> <span word="year">year</span> <span word="to">to</span> <span word="supply">supply</span> <span word="chicken">chicken</span> <span word="farms">farms</span> <span word="with">with</span> <span word="birds">birds</span> <span word="that">that</span> <span word="all">all</span> <span word="grow">grow</span> <span word="at">at</span> <span word="the">the</span> <span word="same">same</span> <span word="rate">rate</span>, <span word="have">have</span> <span word="the">the</span> <span word="same">same</span> <span word="amount">amount</span> <span word="of">of</span> <span word="meat">meat</span> <span word="and">and</span> <span word="taste">taste</span> <span word="the">the</span> <span word="same">same</span>.</p><p> <span word="This">This</span>, <span word="at">at</span> <span word="least">least</span>, <span word="is">is</span> <span word="the">the</span> <span word="vision">vision</span> <span word="of">of</span> <span word="the">the</span> <span word="USs">USs</span> <span word="National">National</span> <span word="Institute">Institute</span> <span word="of">of</span> <span word="Science">Science</span> <span word="and">and</span> <span word="Technology">Technology</span>, <span word="which">which</span> <span word="has">has</span> <span word="given">given</span> <span word="Origen">Origen</span> <span word="Therapeutics">Therapeutics</span> <span word="of">of</span> <span word="Burlingame">Burlingame</span>, <span word="California">California</span>, <span word="and">and</span> <span word="Embrex">Embrex</span> <span word="of">of</span> <span word="North">North</span> <span word="Carolina">Carolina</span> $4.7 <span word="million">million</span> <span word="to">to</span> <span word="help">help</span> <span word="fund">fund</span> <span word="research">research</span>. <span word="The">The</span> <span word="prospect">prospect</span> <span word="has">has</span> <span word="alarmed">alarmed</span> <span word="animal">animal</span> <span word="welfare">welfare</span> <span word="groups">groups</span>, <span word="who">who</span> <span word="fear">fear</span> <span word="it">it</span> <span word="could">could</span> <span word="increase">increase</span> <span word="the">the</span> <span word="suffering">suffering</span> <span word="of">of</span> <span word="farm">farm</span> <span word="birds">birds</span>.</p><p> <span word="Thats">Thats</span> <span word="unlikely">unlikely</span> <span word="to">to</span> <span word="put">put</span> <span word="off">off</span> <span word="the">the</span> <span word="poultry">poultry</span> <span word="industry">industry</span>, <span word="however">however</span>, <span word="which">which</span> <span word="wants">wants</span> <span word="disease">disease</span> <span word="resistant">resistant</span> <span word="birds">birds</span> <span word="that">that</span> <span word="grow">grow</span> <span word="faster">faster</span> <span word="on">on</span> <span word="less">less</span> <span word="food">food</span>. <span word="Producers">Producers</span> <span word="would">would</span> <span word="like">like</span> <span word="the">the</span> <span word="same">same</span> <span word="meat">meat</span> <span word="quantity">quantity</span> <span word="but">but</span> <span word="to">to</span> <span word="use">use</span> <span word="reduced">reduced</span> <span word="inputs">inputs</span> <span word="to">to</span> <span word="get">get</span> <span word="there">there</span>, <span word="says">says</span> <span word="Mike">Mike</span> <span word="Fitzgerald">Fitzgerald</span> <span word="of">of</span> <span word="Origen">Origen</span>. <span word="To">To</span> <span word="meet">meet</span> <span word="this">this</span> <span word="demand">demand</span>, <span word="Origen">Origen</span> <span word="aims">aims</span> <span word="to">to</span> <span word="create">create</span> <span word="an">an</span> <span word="animal">animal</span> <span word="that">that</span> <span word="is">is</span> <span word="effectively">effectively</span> <span word="a">a</span> <span word="clone">clone</span>, <span word="he">he</span> <span word="says">says</span>. <span word="Normal">Normal</span> <span word="cloning">cloning</span> <span word="doesnt">doesnt</span> <span word="work">work</span> <span word="in">in</span> <span word="birds">birds</span> <span word="because">because</span> <span word="eggs">eggs</span> <span word="cant">cant</span> <span word="be">be</span> <span word="removed">removed</span> <span word="and">and</span> <span word="implanted">implanted</span>, <span word="Instead">Instead</span>, <span word="the">the</span> <span word="company">company</span> <span word="is">is</span> <span word="trying">trying</span> <span word="to">to</span> <span word="bulk">bulk</span>-<span word="grow">grow</span> <span word="embryonic">embryonic</span> <span word="stem">stem</span> <span word="cells">cells</span> <span word="taken">taken</span> <span word="from">from</span> <span word="fertilized">fertilized</span> <span word="eggs">eggs</span> <span word="as">as</span> <span word="soon">soon</span> <span word="as">as</span> <span word="theyre">theyre</span> <span word="laid">laid</span>. <span word="The">The</span> <span word="trick">trick</span> <span word="is">is</span> <span word="to">to</span> <span word="culture">culture</span> <span word="the">the</span> <span word="cells">cells</span> <span word="without">without</span> <span word="them">them</span> <span word="starting">starting</span> <span word="to">to</span> <span word="distinguish">distinguish</span>, <span word="so">so</span> <span word="they">they</span> <span word="remain">remain</span> <span word="pluripotent">pluripotent</span>, <span word="says">says</span> <span word="Fitzgerald">Fitzgerald</span>.</p>
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