SAT阅读文章练习：Weddell seal
<p> 下面为大家整理的是一篇关于<span word="Weddell">Weddell</span> <span word="seal">seal</span> 的<span word="SAT">SAT</span>文章阅读模拟题，后面附有相关题目。<span word="SAT">SAT</span>文章阅读考试涉及到的类别很多，需要大家很多的练习。</p><p> <span word="Studies">Studies</span> <span word="of">of</span> <span word="the">the</span> <span word="Weddell">Weddell</span> <span word="seal">seal</span> <span word="in">in</span> <span word="the">the</span> <span word="laboratory">laboratory</span> <span word="have">have</span> <span word="described">described</span> <span word="the">the</span> <span word="physiological">physiological</span> <span word="mechanisms">mechanisms</span> <span word="that">that</span> <span word="allow">allow</span> <span word="the">the</span> <span word="seal">seal</span> <span word="to">to</span> <span word="cope">cope</span> <span word="with">with</span> <span word="the">the</span> <span word="extreme">extreme</span> <span word="oxygen">oxygen</span> <span word="deprivation">deprivation</span> <span word="that">that</span> <span word="occurs">occurs</span> <span word="during">during</span> <span word="its">its</span> <span word="longest">longest</span> <span word="dives">dives</span>, <span word="which">which</span> <span word="can">can</span> <span word="extend">extend</span> 500 <span word="meters">meters</span> <span word="below">below</span> <span word="the">the</span> <span word="oceans">oceans</span> <span word="surface">surface</span> <span word="and">and</span> <span word="last">last</span> <span word="for">for</span> <span word="over">over</span> 70 <span word="minutes">minutes</span>. <span word="Recent">Recent</span> <span word="field">field</span> <span word="studies">studies</span>, <span word="however">however</span>, <span word="suggest">suggest</span> <span word="that">that</span> <span word="during">during</span> <span word="more">more</span> <span word="typical">typical</span> <span word="dives">dives</span> <span word="in">in</span> <span word="the">the</span> <span word="wild">wild</span>, <span word="this">this</span> <span word="seals">seals</span> <span word="physio">physio</span>-<span word="logical">logical</span> <span word="behavior">behavior</span> <span word="is">is</span> <span word="different">different</span>.</p><p> <span word="In">In</span> <span word="the">the</span> <span word="laboratory">laboratory</span>, <span word="when">when</span> <span word="the">the</span> <span word="seal">seal</span> <span word="dives">dives</span> <span word="below">below</span> <span word="the">the</span> <span word="surface">surface</span> <span word="of">of</span> <span word="the">the</span> <span word="water">water</span> <span word="and">and</span> <span word="stops">stops</span> <span word="breathing">breathing</span>, <span word="its">its</span> <span word="heart">heart</span> <span word="beats">beats</span> <span word="more">more</span> <span word="slowly">slowly</span>, <span word="requiring">requiring</span> <span word="less">less</span> <span word="oxygen">oxygen</span>, <span word="and">and</span> <span word="its">its</span> <span word="arteries">arteries</span> <span word="become">become</span> <span word="constricted">constricted</span>, <span word="ensuring">ensuring</span> <span word="that">that</span> <span word="the">the</span> <span word="seals">seals</span> <span word="blood">blood</span> <span word="remains">remains</span> <span word="concentrated">concentrated</span> <span word="near">near</span> <span word="those">those</span> <span word="organs">organs</span> <span word="most">most</span> <span word="crucial">crucial</span> <span word="to">to</span> <span word="its">its</span> <span word="ability">ability</span> <span word="to">to</span> <span word="navigate">navigate</span> <span word="underwater">underwater</span>. <span word="The">The</span> <span word="seal">seal</span> <span word="essentially">essentially</span> <span word="shuts">shuts</span> <span word="off">off</span> <span word="the">the</span> <span word="flow">flow</span> <span word="of">of</span> <span word="blood">blood</span> <span word="to">to</span> <span word="other">other</span> <span word="organs">organs</span>, <span word="which">which</span> <span word="either">either</span> <span word="stop">stop</span> <span word="functioning">functioning</span> <span word="until">until</span> <span word="the">the</span> <span word="seal">seal</span> <span word="surfaces">surfaces</span> <span word="or">or</span> <span word="switch">switch</span> <span word="to">to</span> <span word="an">an</span> <span word="anaerobic">anaerobic</span> <span word="metabolism">metabolism</span>. <span word="The">The</span> <span word="latter">latter</span> <span word="results">results</span> <span word="in">in</span> <span word="the">the</span> <span word="production">production</span> <span word="of">of</span> <span word="large">large</span> <span word="amounts">amounts</span> <span word="of">of</span> <span word="lactic">lactic</span> <span word="acid">acid</span> <span word="which">which</span> <span word="can">can</span> <span word="adversely">adversely</span> <span word="affect">affect</span> <span word="the">the</span> <span word="pH">pH</span> <span word="of">of</span> <span word="the">the</span> <span word="seals">seals</span> <span word="blood">blood</span><span word="but">but</span> <span word="since">since</span> <span word="the">the</span> <span word="anaerobic">anaerobic</span> <span word="metabolism">metabolism</span> <span word="occurs">occurs</span> <span word="only">only</span> <span word="in">in</span> <span word="those">those</span> <span word="tissues">tissues</span> <span word="which">which</span> <span word="have">have</span> <span word="been">been</span> <span word="isolated">isolated</span> <span word="from">from</span> <span word="the">the</span> <span word="seals">seals</span> <span word="blood">blood</span> <span word="supply">supply</span>, <span word="the">the</span> <span word="lactic">lactic</span> <span word="acid">acid</span> <span word="is">is</span> <span word="released">released</span> <span word="into">into</span> <span word="the">the</span> <span word="seals">seals</span> <span word="blood">blood</span> <span word="only">only</span> <span word="after">after</span> <span word="the">the</span> <span word="seal">seal</span> <span word="surfaces">surfaces</span>, <span word="when">when</span> <span word="the">the</span> <span word="lungs">lungs</span>, <span word="liver">liver</span>, <span word="and">and</span> <span word="other">other</span> <span word="organs">organs</span> <span word="quickly">quickly</span> <span word="clear">clear</span> <span word="the">the</span> <span word="acid">acid</span> <span word="from">from</span> <span word="theseals">theseals</span> <span word="blood">blood</span>-<span word="stream">stream</span>.</p>
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