英语六级听力练习：常速英语(4)
<p> 英语六级听力确实有一定难度，所以这就更需要同学们多加练习。听力材料是很好的英语六级听力练习素材。现在距离的英语六级考试还有三个多月的时间，大家只要从现在开始坚持练习，一定会出现奇迹的。下面是小编为大家英语六级听力练习：常速英语，供各位练习。</p><p> <span word="Scientists">Scientists</span> <span word="have">have</span> <span word="just">just</span> <span word="sequenced">sequenced</span> <span word="the">the</span> <span word="genome">genome</span> <span word="of">of</span> <span word="a">a</span> <span word="fly">fly</span> <span word="native">native</span> <span word="to">to</span> <span word="Antarctica">Antarctica</span>, <span word="the">the</span> <span word="coldest">coldest</span>, <span word="driest">driest</span> <span word="and">and</span> <span word="windiest">windiest</span> <span word="place">place</span> <span word="on">on</span> <span word="the">the</span> <span word="planet">planet</span>, <span word="a">a</span> <span word="finding">finding</span> <span word="that">that</span> <span word="may">may</span> <span word="lead">lead</span> <span word="to">to</span> <span word="a">a</span> <span word="wider">wider</span> <span word="understanding">understanding</span> <span word="of">of</span> <span word="how">how</span> <span word="these">these</span> <span word="bugs">bugs</span> <span word="evolved">evolved</span> <span word="to">to</span> <span word="cope">cope</span> <span word="with">with</span> <span word="the">the</span> <span word="environment">environment</span>.</p><p> <span word="The">The</span> <span word="fly">fly</span>, <span word="named">named</span> <span word="Belgica">Belgica</span> <span word="antarctica">antarctica</span>, <span word="is">is</span> <span word="a">a</span> <span word="survivor">survivor</span>, <span word="or">or</span> <span word="as">as</span> <span word="Washington">Washington</span> <span word="State">State</span> <span word="University">University</span> <span word="evolutionary">evolutionary</span> <span word="biologist">biologist</span> <span word="Joanna">Joanna</span> <span word="Kelley">Kelley</span> <span word="likes">likes</span> <span word="to">to</span> <span word="put">put</span> <span word="itan">itan</span> <span word="extremophile">extremophile</span>.</p><p> <span word="This">This</span> <span word="fly">fly</span> <span word="has">has</span> <span word="to">to</span> <span word="withstand">withstand</span> <span word="freezing">freezing</span>, <span word="extreme">extreme</span> <span word="temperature">temperature</span> <span word="changes">changes</span> <span word="so">so</span> <span word="in">in</span> <span word="the">the</span> <span word="Antarctic">Antarctic</span> <span word="summer">summer</span> <span word="its">its</span> <span word="on">on</span> <span word="the">the</span> <span word="rocks">rocks</span> <span word="and">and</span> <span word="those">those</span> <span word="are">are</span> <span word="getting">getting</span> <span word="quite">quite</span> <span word="hot">hot</span>, <span word="Kelley">Kelley</span> <span word="said">said</span>. <span word="But">But</span> <span word="imagine">imagine</span> <span word="the">the</span> <span word="Antarctic">Antarctic</span> <span word="winter">winter</span>, <span word="its">its</span> <span word="very">very</span> <span word="dark">dark</span> <span word="and">and</span> <span word="cold">cold</span>. <span word="Theres">Theres</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="UV">UV</span> [<span word="ultraviolet">ultraviolet</span>] <span word="radiation">radiation</span>. <span word="Theres">Theres</span> <span word="dehydration">dehydration</span>. <span word="And">And</span> <span word="anything">anything</span> <span word="you">you</span> <span word="can">can</span> <span word="imagine">imagine</span> <span word="as">as</span> <span word="an">an</span> <span word="extreme">extreme</span> <span word="pressure">pressure</span>, <span word="this">this</span> <span word="fly">fly</span> <span word="probably">probably</span> <span word="encounters">encounters</span> <span word="it">it</span>.</p><p> <span word="Common">Common</span> <span word="fly">fly</span></p><p> <span word="The">The</span> <span word="fly">fly</span> <span word="is">is</span> <span word="a">a</span> <span word="midge">midge</span>, <span word="a">a</span> <span word="group">group</span> <span word="of">of</span> <span word="small">small</span> <span word="flies">flies</span> <span word="found">found</span> <span word="practically">practically</span> <span word="everywhere">everywhere</span> <span word="on">on</span> <span word="earth">earth</span>.</p><p> <span word="This">This</span> <span word="midge">midge</span> <span word="has">has</span> <span word="evolved">evolved</span> <span word="to">to</span> <span word="survive">survive</span> <span word="in">in</span> <span word="the">the</span> <span word="extreme">extreme</span> <span word="environment">environment</span> <span word="of">of</span> <span word="the">the</span> <span word="rocky">rocky</span> <span word="outcrops">outcrops</span> <span word="of">of</span> <span word="the">the</span> <span word="Antarctic">Antarctic</span> <span word="Peninsula">Peninsula</span>.</p><p> <span word="It">It</span> <span word="is">is</span> <span word="wingless">wingless</span>, <span word="so">so</span> <span word="it">it</span> <span word="cant">cant</span> <span word="be">be</span> <span word="swept">swept</span> <span word="up">up</span> <span word="by">by</span> <span word="the">the</span> <span word="wind">wind</span> <span word="and">and</span> <span word="blown">blown</span> <span word="into">into</span> <span word="the">the</span> <span word="sea">sea</span>. <span word="It">It</span> <span word="can">can</span> <span word="also">also</span> <span word="tolerate">tolerate</span> 40 <span word="percent">percent</span> <span word="or">or</span> <span word="more">more</span> <span word="water">water</span> <span word="loss">loss</span> <span word="in">in</span> <span word="its">its</span> <span word="cells">cells</span>, <span word="more">more</span> <span word="than">than</span> <span word="double">double</span> <span word="that">that</span> <span word="of">of</span> <span word="other">other</span> <span word="midges">midges</span>.</p>
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