GRE阅读高频机经原文：Maya遗迹
<p> 28. <span word="Maya">Maya</span>遗迹</p><p> <span word="The">The</span> <span word="results">results</span> <span word="from">from</span> <span word="an">an</span> <span word="autecological">autecological</span> <span word="study">study</span> <span word="of">of</span> <span word="the">the</span> <span word="growth">growth</span>, <span word="reproduction">reproduction</span>, <span word="and">and</span> <span word="population">population</span> <span word="dynamics">dynamics</span> <span word="of">of</span> <span word="Brosimum">Brosimum</span> <span word="alicastrum">alicastrum</span> <span word="in">in</span> <span word="southern">southern</span> <span word="Mexico">Mexico</span> <span word="are">are</span> <span word="applied">applied</span> <span word="to">to</span> <span word="the">the</span> <span word="controversy">controversy</span> <span word="surrounding">surrounding</span> <span word="the">the</span> <span word="use">use</span> <span word="of">of</span> <span word="this">this</span> <span word="species">species</span> <span word="in">in</span> <span word="Maya">Maya</span> <span word="subsistence">subsistence</span> <span word="practice">practice</span>. <span word="The">The</span> <span word="frequent">frequent</span> <span word="occurrence">occurrence</span> <span word="of">of</span> <span word="B">B</span>. <span word="alicastrum">alicastrum</span> <span word="near">near</span> <span word="ruins">ruins</span> <span word="is">is</span> <span word="explained">explained</span> <span word="by">by</span> <span word="its">its</span> <span word="competitive">competitive</span> <span word="advantage">advantage</span> <span word="on">on</span> <span word="shallow">shallow</span> <span word="limestone">limestone</span> <span word="soils">soils</span> <span word="coupled">coupled</span> <span word="with">with</span> <span word="a">a</span> <span word="continual">continual</span> <span word="input">input</span> <span word="of">of</span> <span word="bat">bat</span>-<span word="dispersed">dispersed</span> <span word="seed">seed</span>. <span word="Populations">Populations</span> <span word="of">of</span> <span word="the">the</span> <span word="tree">tree</span> <span word="at">at</span> <span word="Tikal">Tikal</span> <span word="are">are</span> <span word="then">then</span> <span word="compared">compared</span> <span word="with">with</span> <span word="other">other</span> <span word="naturally">naturally</span> <span word="occurring">occurring</span> <span word="populations">populations</span> <span word="as">as</span> <span word="an">an</span> <span word="example">example</span> <span word="of">of</span> <span word="how">how</span> <span word="a">a</span> <span word="detailed">detailed</span> <span word="ecological">ecological</span> <span word="analysis">analysis</span> <span word="may">may</span> <span word="furnish">furnish</span> <span word="valuable">valuable</span> <span word="insight">insight</span> <span word="into">into</span> <span word="the">the</span> <span word="historical">historical</span> <span word="use">use</span> <span word="of">of</span> <span word="a">a</span> <span word="plant">plant</span> <span word="species">species</span>. <span word="The">The</span> <span word="Tikal">Tikal</span> <span word="populations">populations</span> <span word="are">are</span> <span word="shown">shown</span> <span word="to">to</span> <span word="be">be</span> <span word="atypical">atypical</span> <span word="in">in</span> <span word="terms">terms</span> <span word="of">of</span> <span word="phenology">phenology</span>, <span word="productivity">productivity</span> <span word="and">and</span> <span word="breeding">breeding</span> <span word="systems">systems</span>, <span word="suggesting">suggesting</span> <span word="that">that</span> <span word="some">some</span> <span word="form">form</span> <span word="of">of</span> <span word="artificial">artificial</span> <span word="selection">selection</span> <span word="may">may</span> <span word="have">have</span> <span word="been">been</span> <span word="practiced">practiced</span> <span word="by">by</span> <span word="the">the</span> <span word="Maya">Maya</span>.</p><p> </p>
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