英语六级考试备考晨读美文——Population Growth
<p> <span word="Population">Population</span> <span word="Growth">Growth</span></p><p> <span word="The">The</span> <span word="growth">growth</span> <span word="of">of</span> <span word="population">population</span> <span word="during">during</span> <span word="the">the</span> <span word="past">past</span> <span word="few">few</span> <span word="centuries">centuries</span> <span word="is">is</span> <span word="no">no</span> <span word="proof">proof</span> <span word="that">that</span> <span word="population">population</span> <span word="will">will</span> <span word="continue">continue</span> <span word="to">to</span> <span word="grow">grow</span> <span word="straight">straight</span> <span word="upward">upward</span> <span word="toward">toward</span> <span word="infinity">infinity</span> <span word="and">and</span> <span word="doom">doom</span>. <span word="On">On</span> <span word="the">the</span> <span word="contrary">contrary</span>, <span word="demographic">demographic</span> <span word="history">history</span> <span word="offers">offers</span> <span word="evidence">evidence</span> <span word="that">that</span> <span word="population">population</span> <span word="growth">growth</span> <span word="has">has</span> <span word="not">not</span> <span word="been">been</span> <span word="at">at</span> <span word="all">all</span> <span word="constant">constant</span>. <span word="According">According</span> <span word="to">to</span> <span word="paleoecologist">paleoecologist</span> <span word="Edward">Edward</span> <span word="Deevey">Deevey</span>, <span word="the">the</span> <span word="past">past</span> <span word="million">million</span> <span word="years">years</span> <span word="show">show</span> <span word="three">three</span> <span word="momentous">momentous</span> <span word="changes">changes</span>. <span word="The">The</span> <span word="first">first</span>, <span word="a">a</span> <span word="rapid">rapid</span> <span word="increase">increase</span> <span word="in">in</span> <span word="population">population</span> <span word="around">around</span> <span word="one">one</span> <span word="m">m</span> <span word="illion">illion</span> <span word="B">B</span>. <span word="C">C</span>., <span word="followed">followed</span> <span word="the">the</span> <span word="innovations">innovations</span> <span word="of">of</span> <span word="tool">tool</span> <span word="making">making</span> <span word="and">and</span> <span word="tool">tool</span> <span word="using">using</span>. <span word="But">But</span> <span word="when">when</span> <span word="the">the</span> <span word="new">new</span> <span word="power">power</span> <span word="from">from</span> <span word="the">the</span> <span word="use">use</span> <span word="of">of</span> <span word="tools">tools</span> <span word="has">has</span> <span word="been">been</span> <span word="exploited">exploited</span>, <span word="the">the</span> <span word="rate">rate</span> <span word="of">of</span> <span word="world">world</span> <span word="population">population</span> <span word="growth">growth</span> <span word="fell">fell</span> <span word="and">and</span> <span word="became">became</span> <span word="almost">almost</span> <span word="stable">stable</span>. <span word="The">The</span> <span word="next">next</span> <span word="rapid">rapid</span> <span word="jump">jump</span> <span word="in">in</span> <span word="population">population</span> <span word="started">started</span> <span word="perhaps">perhaps</span> 10,000 <span word="years">years</span> <span word="ago">ago</span>, <span word="when">when</span> <span word="mankind">mankind</span> <span word="began">began</span> <span word="to">to</span> <span word="keep">keep</span> <span word="herds">herds</span>, <span word="plow">plow</span> <span word="and">and</span> <span word="plant">plant</span> <span word="the">the</span> <span word="earth">earth</span>. <span word="Once">Once</span> <span word="again">again</span> <span word="when">when</span> <span word="initial">initial</span> <span word="productivity">productivity</span> <span word="gains">gains</span> <span word="had">had</span> <span word="been">been</span> <span word="absorbed">absorbed</span>, <span word="the">the</span> <span word="rate">rate</span> <span word="of">of</span> <span word="population">population</span> <span word="growth">growth</span> <span word="abated">abated</span>. <span word="These">These</span> <span word="two">two</span> <span word="episodes">episodes</span> <span word="suggest">suggest</span> <span word="that">that</span> <span word="the">the</span> <span word="third">third</span> <span word="great">great</span> <span word="change">change</span>, <span word="the">the</span> <span word="present">present</span> <span word="rapid">rapid</span> <span word="growth">growth</span>, <span word="which">which</span> <span word="began">began</span> <span word="in">in</span> <span word="the">the</span> <span word="West">West</span> <span word="between">between</span> 250 <span word="and">and</span> 350 <span word="years">years</span> <span word="ago">ago</span>, <span word="may">may</span> <span word="also">also</span> <span word="slow">slow</span> <span word="down">down</span> <span word="when">when</span>, <span word="or">or</span> <span word="if">if</span>, <span word="technology">technology</span> <span word="begins">begins</span> <span word="to">to</span> <span word="yield">yield</span> <span word="fewer">fewer</span> <span word="innovations">innovations</span>. <span word="Of">Of</span> <span word="course">course</span>, <span word="the">the</span> <span word="current">current</span> <span word="knowledge">knowledge</span> <span word="revolution">revolution</span> <span word="may">may</span> <span word="continue">continue</span> <span word="without">without</span> <span word="foreseeable">foreseeable</span> <span word="end">end</span>. <span word="Either">Either</span> <span word="way">way</span> - <span word="contrary">contrary</span> <span word="to">to</span> <span word="popular">popular</span> <span word="belief">belief</span> <span word="in">in</span> <span word="constant">constant</span> <span word="geometric">geometric</span> <span word="growth">growth</span> - <span word="population">population</span> <span word="can">can</span> <span word="be">be</span> <span word="expected">expected</span> <span word="in">in</span> <span word="the">the</span> <span word="long">long</span> <span word="run">run</span> <span word="to">to</span> <span word="adjust">adjust</span> <span word="to">to</span> <span word="productivity">productivity</span>. <span word="And">And</span> <span word="when">when</span> <span word="one">one</span> <span word="takes">takes</span> <span word="this">this</span> <span word="view">view</span>, <span word="population">population</span> <span word="growth">growth</span> <span word="is">is</span> <span word="seen">seen</span> <span word="to">to</span> <span word="represent">represent</span> <span word="economic">economic</span> <span word="progress">progress</span> <span word="and">and</span> <span word="human">human</span> <span word="triumph">triumph</span> <span word="rather">rather</span> <span word="than">than</span> <span word="social">social</span> <span word="failure">failure</span>.</p><p> </p>
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