职称英语理工类AB级阅读理解经典练习题(7)
<p> <span word="Ocean">Ocean</span> <span word="Noise">Noise</span> <span word="Pollution">Pollution</span> <span word="The">The</span> <span word="noise">noise</span> <span word="that">that</span> <span word="affects">affects</span> <span word="sea">sea</span> <span word="creatures">creatures</span> <span word="comes">comes</span> <span word="from">from</span> <span word="a">a</span> <span word="number">number</span> <span word="of">of</span> <span word="human">human</span> <span word="activities">activities</span>. <span word="It">It</span> <span word="is">is</span> <span word="caused">caused</span> <span word="mainly">mainly</span> <span word="by">by</span> <span word="industrial">industrial</span> <span word="underwater">underwater</span> <span word="explosions">explosions</span>, <span word="ocean">ocean</span> <span word="drilling">drilling</span>, <span word="and">and</span> <span word="ship">ship</span> <span word="engines">engines</span>. <span word="Such">Such</span> <span word="noises">noises</span> <span word="are">are</span> <span word="added">added</span> <span word="to">to</span> <span word="natural">natural</span> <span word="sounds">sounds</span>. <span word="These">These</span> <span word="sounds">sounds</span> <span word="include">include</span> <span word="the">the</span> <span word="breaking">breaking</span> <span word="of">of</span> <span word="ice">ice</span> <span word="fields">fields</span>, <span word="underwater">underwater</span> <span word="earthquakes">earthquakes</span>, <span word="and">and</span> <span word="sounds">sounds</span> <span word="made">made</span> <span word="by">by</span> <span word="animals">animals</span> <span word="themselves">themselves</span>. <span word="Some">Some</span> <span word="scientists">scientists</span> <span word="have">have</span> <span word="proposed">proposed</span> <span word="setting">setting</span> <span word="a">a</span> <span word="noise">noise</span> <span word="limit">limit</span> <span word="of">of</span> <span word="one">one</span>. <span word="hundred">hundred</span>-<span word="twenty">twenty</span> <span word="decibels">decibels</span> <span word="in">in</span> <span word="oceans">oceans</span>. <span word="They">They</span> <span word="have">have</span> <span word="observed">observed</span> <span word="that">that</span> <span word="noises">noises</span> <span word="at">at</span> <span word="that">that</span> <span word="level">level</span> <span word="can">can</span> <span word="frighten">frighten</span> <span word="and">and</span> <span word="confuse">confuse</span> <span word="whales">whales</span> . <span word="Many">Many</span> <span word="researchers">researchers</span>， <span word="whose">whose</span> <span word="work">work</span> <span word="depends">depends</span> <span word="on">on</span> <span word="ocean">ocean</span> <span word="sounds">sounds</span> <span word="object">object</span> <span word="to">to</span> <span word="a">a</span> <span word="limit">limit</span> <span word="of">of</span> <span word="one">one</span>-<span word="hundred">hundred</span>-<span word="twenty">twenty</span> <span word="decibels">decibels</span>. <span word="They">They</span> <span word="say">say</span> <span word="such">such</span> <span word="a">a</span> <span word="limit">limit</span> <span word="is">is</span> <span word="a">a</span> <span word="greater">greater</span> <span word="danger">danger</span> <span word="than">than</span> <span word="they">they</span> <span word="believed">believed</span>. <span word="They">They</span> <span word="want">want</span> <span word="to">to</span> <span word="prevent">prevent</span> <span word="noises">noises</span> <span word="from">from</span> <span word="harming">harming</span> <span word="creatures">creatures</span> <span word="in">in</span> <span word="the">the</span> <span word="ocean">ocean</span>. <span word="A">A</span> <span word="The">The</span> <span word="sound">sound</span> <span word="of">of</span> <span word="a">a</span> <span word="car">car</span>. <span word="C">C</span> <span word="Man">Man</span>-<span word="made">made</span> <span word="noise">noise</span> <span word="pollution">pollution</span>.</p><p> </p>
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