2015考研英语阅读侵略性物种
<p> <span word="Invasive">Invasive</span> <span word="species">species</span></p><p> 侵略性物种</p><p> <span word="Thorny">Thorny</span> <span word="questions">questions</span></p><p> 棘手问题</p><p> <span word="The">The</span> <span word="ecological">ecological</span> <span word="effects">effects</span> <span word="of">of</span> <span word="buckthorn">buckthorn</span> <span word="in">in</span> <span word="NorthAmerica">NorthAmerica</span></p><p> 北美鼠李属植物的生态影响</p><p> <span word="CONSERVATIONISTS">CONSERVATIONISTS</span>, <span word="being">being</span> <span word="by">by</span> <span word="definition">definition</span> <span word="conservative">conservative</span>, <span word="usually">usually</span> <span word="view">view</span> <span word="the">the</span> <span word="introduction">introduction</span> <span word="ofnew">ofnew</span> <span word="species">species</span> <span word="into">into</span> <span word="an">an</span> <span word="environment">environment</span> <span word="with">with</span> <span word="horror">horror</span>.</p><p> 生态环境保护者，从定义上看就偏于保守，常对固有环境中新物种的引入恐惧不已。</p><p> <span word="If">If</span> <span word="such">such</span> <span word="a">a</span> <span word="species">species</span> <span word="is">is</span> <span word="successful">successful</span>, <span word="it">it</span> <span word="is">is</span> <span word="described">described</span> <span word="as">as</span> <span word="invasivea">invasivea</span> <span word="rather">rather</span> <span word="pejorative">pejorative</span> <span word="word">word</span>.</p><p> 一种新物种一旦引入成功，它常常具有侵略性一个含贬义的词语。</p><p> <span word="But">But</span> <span word="how">how</span> <span word="much">much</span> <span word="change">change</span> <span word="such">such</span> <span word="species">species</span> <span word="actually">actually</span> <span word="cause">cause</span> <span word="is">is</span> <span word="often">often</span> <span word="moot">moot</span>.</p><p> 然而，这些物种究竟造成环境多少改变?</p><p> <span word="So">So</span> <span word="two">two</span> <span word="recent">recent</span> <span word="studies">studies</span> <span word="of">of</span> <span word="European">European</span> <span word="buckthorn">buckthorn</span> <span word="in">in</span> <span word="North">North</span> <span word="America">America</span>, <span word="which">which</span> <span word="attempt">attempt</span> <span word="to">to</span> <span word="find">find</span> <span word="thisout">thisout</span>, <span word="are">are</span> <span word="a">a</span> <span word="welcome">welcome</span> <span word="shaft">shaft</span> <span word="of">of</span> <span word="light">light</span> <span word="on">on</span> <span word="the">the</span> <span word="debate">debate</span>.</p><p> 常常引来争论。最近对鼠李属植物的两项研究有助于搞清这一问题。所以该研究在这场争论中受人瞩目。</p><p> <span word="Buckthorn">Buckthorn</span> <span word="was">was</span> <span word="imported">imported</span> <span word="from">from</span> <span word="Europe">Europe</span> <span word="to">to</span> <span word="America">America</span> <span word="in">in</span> <span word="the">the</span> 19<span word="th">th</span> <span word="century">century</span>, <span word="to">to</span> <span word="make">make</span> <span word="gardenhedges">gardenhedges</span>.</p><p> 鼠李属植物在19世纪从欧洲出口到美国，用来制作花园围篱。</p>
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