2014年的职称英语理工类教材学习部分内容及解析(八)
<p> 2014年职称英语理工类教材学习部分内容及解析</p><p> 13. <span word="Hidden">Hidden</span> <span word="Species">Species</span> <span word="May">May</span> <span word="Be">Be</span> <span word="Surprisingly">Surprisingly</span> <span word="Common">Common</span></p><p> (替换2013年用书理工类阅读理解第四十八篇：<span word="Shrinking">Shrinking</span> <span word="Water">Water</span> <span word="Supply">Supply</span> <span word="Poses">Poses</span> <span word="Threat">Threat</span> <span word="to">to</span> <span word="Peace">Peace</span>)</p><p> <span word="Cryptic">Cryptic</span> <span word="species">species</span><span word="animals">animals</span> <span word="that">that</span> <span word="appear">appear</span> <span word="identical">identical</span> <span word="but">but</span> <span word="are">are</span> <span word="genetically">genetically</span> <span word="quite">quite</span> <span word="distant">distant</span><span word="may">may</span> <span word="be">be</span> <span word="much">much</span> <span word="more">more</span> <span word="widespread">widespread</span> <span word="than">than</span> <span word="previously">previously</span> <span word="thought">thought</span>. <span word="The">The</span> <span word="findings">findings</span> <span word="could">could</span> <span word="have">have</span> <span word="major">major</span> <span word="implications">implications</span> <span word="in">in</span> <span word="areas">areas</span> <span word="ranging">ranging</span> <span word="from">from</span> <span word="biodiversity">biodiversity</span> <span word="estimates">estimates</span> <span word="and">and</span> <span word="wildlife">wildlife</span> <span word="management">management</span>, <span word="to">to</span> <span word="our">our</span> <span word="understanding">understanding</span> <span word="of">of</span> <span word="infectious">infectious</span> <span word="diseases">diseases</span> <span word="and">and</span> <span word="evolution">evolution</span>.</p><p> <span word="Reports">Reports</span> <span word="of">of</span> <span word="cryptic">cryptic</span> <span word="species">species</span> <span word="have">have</span> <span word="increased">increased</span> <span word="dramatically">dramatically</span> <span word="over">over</span> <span word="the">the</span> <span word="past">past</span> <span word="two">two</span> <span word="decades">decades</span> <span word="with">with</span> <span word="the">the</span> <span word="advent">advent</span> <span word="of">of</span> <span word="relatively">relatively</span> <span word="inexpensive">inexpensive</span> <span word="DNA">DNA</span> <span word="sequencing">sequencing</span> <span word="technology">technology</span>. <span word="Markus">Markus</span> <span word="Pfenninger">Pfenninger</span> <span word="and">and</span> <span word="Klaus">Klaus</span> <span word="Schwenk">Schwenk</span>, <span word="of">of</span> <span word="the">the</span> <span word="Goethe">Goethe</span>-<span word="Universitat">Universitat</span> <span word="in">in</span> <span word="Frankfurt">Frankfurt</span>1, <span word="Germany">Germany</span>, <span word="analyzed">analyzed</span> <span word="all">all</span> <span word="known">known</span> <span word="data">data</span> <span word="on">on</span> <span word="cryptic">cryptic</span> <span word="animal">animal</span> <span word="species">species</span> <span word="and">and</span> <span word="discovered">discovered</span> <span word="that">that</span> <span word="they">they</span> <span word="are">are</span> <span word="found">found</span> <span word="in">in</span> <span word="equal">equal</span> <span word="proportions">proportions</span> <span word="throughout">throughout</span> <span word="all">all</span> <span word="major">major</span> <span word="branches">branches</span> <span word="of">of</span> <span word="the">the</span> <span word="animal">animal</span> <span word="kingdom">kingdom</span> <span word="and">and</span> <span word="occur">occur</span> <span word="in">in</span> <span word="equal">equal</span> <span word="numbers">numbers</span> <span word="in">in</span> <span word="all">all</span> <span word="biogeographical">biogeographical</span> <span word="regions">regions</span>.</p><p> <span word="Scientists">Scientists</span> <span word="had">had</span> <span word="previously">previously</span> <span word="speculated">speculated</span> <span word="that">that</span> <span word="cryptic">cryptic</span> <span word="species">species</span> <span word="were">were</span> <span word="predominantly">predominantly</span> <span word="found">found</span> <span word="in">in</span> <span word="insects">insects</span> <span word="and">and</span> <span word="reptiles">reptiles</span>, <span word="and">and</span> <span word="were">were</span> <span word="more">more</span> <span word="likely">likely</span> <span word="to">to</span> <span word="occur">occur</span> <span word="in">in</span> <span word="tropical">tropical</span> <span word="rather">rather</span> <span word="than">than</span> <span word="temperate">temperate</span> <span word="regions">regions</span>. <span word="Species">Species</span> <span word="that">that</span> <span word="are">are</span> <span word="seemingly">seemingly</span> <span word="widespread">widespread</span> <span word="and">and</span> <span word="abundant">abundant</span> <span word="could">could</span> <span word="in">in</span> <span word="reality">reality</span> <span word="be">be</span> <span word="many">many</span> <span word="different">different</span> <span word="cryptic">cryptic</span> <span word="species">species</span> <span word="that">that</span> <span word="have">have</span> <span word="low">low</span> <span word="populations">populations</span> <span word="and">and</span> <span word="are">are</span> <span word="highly">highly</span> <span word="endangered">endangered</span>, <span word="says">says</span> <span word="Pfenninger">Pfenninger</span>. <span word="Until">Until</span> <span word="the">the</span> <span word="genetic">genetic</span> <span word="information">information</span> <span word="of">of</span> <span word="all">all</span> <span word="species">species</span> <span word="in">in</span> <span word="at">at</span> <span word="least">least</span> <span word="one">one</span> <span word="taxon">taxon</span> <span word="is">is</span> <span word="thoroughly">thoroughly</span> <span word="studied">studied</span>, <span word="no">no</span> <span word="one">one</span> <span word="will">will</span> <span word="know">know</span> <span word="just">just</span> <span word="how">how</span> <span word="many">many</span> <span word="cryptic">cryptic</span> <span word="species">species</span> <span word="exist">exist</span>.<span word="It">It</span> <span word="could">could</span> <span word="be">be</span> <span word="as">as</span> <span word="high">high</span> <span word="as">as</span> 30%, <span word="Pfenninger">Pfenninger</span> <span word="says">says</span>.</p>
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