2013职称英语理工类的阅读理解A级新增文章第48篇
<p> <span word="Most">Most</span> <span word="of">of</span> <span word="us">us</span> <span word="walk">walk</span> <span word="and">and</span> <span word="carry">carry</span> <span word="items">items</span> <span word="in">in</span> <span word="our">our</span> <span word="hands">hands</span> <span word="every">every</span> <span word="day">day</span>. <span word="These">These</span> <span word="are">are</span> <span word="seemingly">seemingly</span> <span word="simple">simple</span> <span word="activities">activities</span> <span word="that">that</span> <span word="the">the</span> <span word="majority">majority</span> <span word="of">of</span> <span word="us">us</span> <span word="dont">dont</span> <span word="question">question</span>. <span word="But">But</span> <span word="an">an</span> <span word="international">international</span> <span word="team">team</span> <span word="of">of</span> <span word="researchers">researchers</span>, <span word="including">including</span> <span word="Dr">Dr</span>. <span word="Richmond">Richmond</span> <span word="from">from</span> <span word="GWs">GWs</span> <span word="Columbian">Columbian</span> <span word="College">College</span> <span word="of">of</span> <span word="Arts">Arts</span> <span word="and">and</span> <span word="Sciences">Sciences</span>1, <span word="have">have</span> <span word="discovered">discovered</span> <span word="that">that</span> <span word="human">human</span> <span word="walking">walking</span> <span word="upright">upright</span>, <span word="may">may</span> <span word="have">have</span> <span word="originated">originated</span> <span word="millions">millions</span> <span word="of">of</span> <span word="years">years</span> <span word="ago">ago</span> <span word="as">as</span> <span word="an">an</span> <span word="adaptation">adaptation</span> <span word="to">to</span> <span word="carrying">carrying</span> <span word="scarce">scarce</span>, <span word="high">high</span>---<span word="quality">quality</span> <span word="resources">resources</span>. <span word="The">The</span> <span word="team">team</span> <span word="of">of</span> <span word="researchers">researchers</span> <span word="from">from</span> <span word="the">the</span> <span word="U">U</span>. <span word="S">S</span>., <span word="England">England</span>, <span word="Japan">Japan</span> <span word="and">and</span> <span word="Portugal">Portugal</span> <span word="investigated">investigated</span> <span word="the">the</span> <span word="behavior">behavior</span> <span word="of">of</span> <span word="modern">modern</span>-<span word="day">day</span> <span word="chimpanzees">chimpanzees</span> <span word="as">as</span> <span word="they">they</span> <span word="competed">competed</span> <span word="for">for</span> <span word="food">food</span> <span word="resources">resources</span>, <span word="in">in</span> <span word="an">an</span> <span word="effort">effort</span> <span word="to">to</span> <span word="understand">understand</span> <span word="what">what</span> <span word="ecological">ecological</span> <span word="settings">settings</span>2 <span word="would">would</span> <span word="lead">lead</span> <span word="a">a</span> <span word="large">large</span> <span word="ape">ape</span> - <span word="one">one</span> <span word="that">that</span> <span word="resembles">resembles</span> <span word="the">the</span> 6 <span word="million">million</span>---<span word="year">year</span> <span word="old">old</span> <span word="ancestor">ancestor</span> <span word="we">we</span> <span word="shared">shared</span> <span word="in">in</span> <span word="common">common</span> <span word="with">with</span> <span word="living">living</span> <span word="chimpanzees">chimpanzees</span>---<span word="to">to</span> <span word="walk">walk</span> <span word="on">on</span> <span word="two">two</span> <span word="legs">legs</span>.</p><p> <span word="The">The</span> <span word="research">research</span> <span word="findings">findings</span> <span word="suggest">suggest</span> <span word="that">that</span> <span word="chimpanzees">chimpanzees</span> <span word="switch">switch</span> <span word="to">to</span> <span word="moving">moving</span> <span word="on">on</span> <span word="two">two</span> <span word="limbs">limbs</span> <span word="instead">instead</span> <span word="of">of</span> <span word="four">four</span> <span word="in">in</span> <span word="situations">situations</span> <span word="where">where</span> <span word="they">they</span> <span word="need">need</span> <span word="to">to</span> <span word="monopolize">monopolize</span> <span word="a">a</span> <span word="resource">resource</span>. <span word="Standing">Standing</span> <span word="on">on</span> <span word="two">two</span> <span word="legs">legs</span> <span word="allows">allows</span> <span word="them">them</span> <span word="to">to</span> <span word="carry">carry</span> <span word="much">much</span> <span word="more">more</span> <span word="at">at</span> <span word="one">one</span> <span word="time">time</span> <span word="because">because</span> <span word="it">it</span> <span word="frees">frees</span> <span word="up">up</span> <span word="their">their</span> <span word="hands">hands</span>. <span word="Over">Over</span> <span word="time">time</span>, <span word="intense">intense</span> <span word="bursts">bursts</span> <span word="of">of</span> <span word="bipedal">bipedal</span> <span word="activity">activity</span>3 <span word="may">may</span> <span word="have">have</span> <span word="led">led</span> <span word="to">to</span> <span word="anatomical">anatomical</span> <span word="changes">changes</span>4 <span word="that">that</span> <span word="in">in</span> <span word="turn">turn</span> <span word="became">became</span> <span word="the">the</span> <span word="subject">subject</span> <span word="of">of</span> <span word="natural">natural</span> <span word="selection">selection</span> <span word="where">where</span> <span word="competition">competition</span> <span word="for">for</span> <span word="food">food</span> <span word="or">or</span> <span word="other">other</span> <span word="resources">resources</span> <span word="was">was</span> <span word="strong">strong</span>.</p><p> <span word="When">When</span> <span word="the">the</span> <span word="rare">rare</span> <span word="coula">coula</span> <span word="nuts">nuts</span> <span word="were">were</span> <span word="available">available</span> <span word="only">only</span> <span word="in">in</span> <span word="small">small</span> <span word="numbers">numbers</span>, <span word="the">the</span> <span word="chimpanzees">chimpanzees</span> <span word="transported">transported</span> <span word="more">more</span> <span word="at">at</span> <span word="one">one</span> <span word="time">time</span>. <span word="Similarly">Similarly</span>, <span word="when">when</span> <span word="coula">coula</span> <span word="nuts">nuts</span> <span word="were">were</span> <span word="the">the</span> <span word="majority">majority</span> <span word="resource">resource</span>, <span word="he">he</span> <span word="chimpanzees">chimpanzees</span> <span word="ignored">ignored</span> <span word="the">the</span> <span word="oil">oil</span> <span word="palm">palm</span> <span word="nuts">nuts</span> <span word="altogether">altogether</span>. <span word="The">The</span> <span word="chimpanzees">chimpanzees</span> <span word="regarded">regarded</span> <span word="the">the</span> <span word="coula">coula</span> <span word="nuts">nuts</span> <span word="as">as</span> <span word="a">a</span> <span word="more">more</span> <span word="highly">highly</span>---<span word="prized">prized</span> <span word="resource">resource</span> <span word="and">and</span> <span word="competed">competed</span> <span word="for">for</span> <span word="them">them</span> <span word="more">more</span> <span word="intensely">intensely</span>.</p>
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