专业英语四级考试阅读理解练习题及答案详解(六)
<p> <span word="Certainly">Certainly</span> <span word="no">no</span> <span word="creature">creature</span> <span word="in">in</span> <span word="the">the</span> <span word="sea">sea</span> <span word="is">is</span> <span word="odder">odder</span> <span word="than">than</span> <span word="the">the</span> <span word="common">common</span> <span word="sea">sea</span> <span word="cucumber">cucumber</span>. <span word="All">All</span> <span word="living">living</span> <span word="creature">creature</span>， <span word="especially">especially</span> <span word="human">human</span> <span word="beings">beings</span>， <span word="have">have</span> <span word="their">their</span> <span word="peculiarities">peculiarities</span>， <span word="but">but</span> <span word="everything">everything</span> <span word="about">about</span> <span word="the">the</span> <span word="little">little</span> <span word="sea">sea</span> <span word="cucumber">cucumber</span> <span word="seems">seems</span> <span word="unusual">unusual</span>. <span word="What">What</span> <span word="else">else</span> <span word="can">can</span> <span word="be">be</span> <span word="said">said</span> <span word="about">about</span> <span word="a">a</span> <span word="bizarre">bizarre</span> <span word="animal">animal</span> <span word="that">that</span>， <span word="among">among</span> <span word="other">other</span> <span word="eccentricities">eccentricities</span>， <span word="eats">eats</span> <span word="mud">mud</span>， <span word="feeds">feeds</span> <span word="almost">almost</span> <span word="continuously">continuously</span> <span word="day">day</span> <span word="and">and</span> <span word="night">night</span> <span word="but">but</span> <span word="can">can</span> <span word="live">live</span> <span word="without">without</span> <span word="eating">eating</span> <span word="for">for</span> <span word="long">long</span> <span word="periods">periods</span>， <span word="and">and</span> <span word="can">can</span> <span word="be">be</span> <span word="poisonous">poisonous</span> <span word="but">but</span> <span word="is">is</span> <span word="considered">considered</span> <span word="supremely">supremely</span> <span word="edible">edible</span> <span word="by">by</span> <span word="gourmets">gourmets</span>?</p><p> <span word="For">For</span> <span word="some">some</span> <span word="fifty">fifty</span> <span word="million">million</span> <span word="years">years</span>， <span word="despite">despite</span> <span word="all">all</span> <span word="its">its</span> <span word="eccentricities">eccentricities</span>， <span word="the">the</span> <span word="sea">sea</span> <span word="cucumber">cucumber</span> <span word="has">has</span> <span word="subsisted">subsisted</span> <span word="on">on</span> <span word="its">its</span> <span word="diet">diet</span> <span word="of">of</span> <span word="mud">mud</span>. <span word="It">It</span> <span word="is">is</span> <span word="adaptable">adaptable</span> <span word="enough">enough</span> <span word="to">to</span> <span word="live">live</span> <span word="attached">attached</span> <span word="to">to</span> <span word="rocks">rocks</span> <span word="by">by</span> <span word="its">its</span> <span word="tube">tube</span> <span word="feet">feet</span>， <span word="under">under</span> <span word="rocks">rocks</span> <span word="in">in</span> <span word="shallow">shallow</span> <span word="water">water</span>， <span word="or">or</span> <span word="on">on</span> <span word="the">the</span> <span word="surface">surface</span> <span word="of">of</span> <span word="mud">mud</span> <span word="flats">flats</span>. <span word="Common">Common</span> <span word="in">in</span> <span word="cool">cool</span> <span word="water">water</span> <span word="on">on</span> <span word="both">both</span> <span word="Atlantic">Atlantic</span> <span word="and">and</span> <span word="Pacific">Pacific</span> <span word="shores">shores</span>， <span word="it">it</span> <span word="has">has</span> <span word="the">the</span> <span word="ability">ability</span> <span word="to">to</span> <span word="suck">suck</span> <span word="up">up</span> <span word="mud">mud</span> <span word="or">or</span> <span word="sand">sand</span> <span word="and">and</span> <span word="digest">digest</span> <span word="whatever">whatever</span> <span word="nutrients">nutrients</span> <span word="are">are</span> <span word="present">present</span>.</p><p> <span word="Sea">Sea</span> <span word="cucumbers">cucumbers</span> <span word="come">come</span> <span word="in">in</span> <span word="a">a</span> <span word="variety">variety</span> <span word="of">of</span> <span word="colors">colors</span>， <span word="ranging">ranging</span> <span word="from">from</span> <span word="black">black</span> <span word="to">to</span> <span word="reddish">reddish</span> <span word="brown">brown</span> <span word="to">to</span> <span word="sand">sand</span> <span word="color">color</span> <span word="and">and</span> <span word="nearly">nearly</span> <span word="white">white</span>. <span word="One">One</span> <span word="form">form</span> <span word="even">even</span> <span word="has">has</span> <span word="vivid">vivid</span> <span word="purple">purple</span> <span word="tentacles">tentacles</span>. <span word="Usually">Usually</span> <span word="the">the</span> <span word="creatures">creatures</span> <span word="are">are</span> <span word="cucumber">cucumber</span> <span word="shaped">shaped</span>-<span word="hence">hence</span> <span word="their">their</span> <span word="name">name</span>-<span word="and">and</span> <span word="because">because</span> <span word="they">they</span> <span word="are">are</span> <span word="typically">typically</span> <span word="rock">rock</span> <span word="inhabitants">inhabitants</span>， <span word="this">this</span> <span word="shape">shape</span>， <span word="combined">combined</span> <span word="with">with</span> <span word="flexibility">flexibility</span>， <span word="enables">enables</span> <span word="them">them</span> <span word="to">to</span> <span word="squeeze">squeeze</span> <span word="into">into</span> <span word="crevices">crevices</span> <span word="where">where</span> <span word="they">they</span> <span word="are">are</span> <span word="safe">safe</span> <span word="from">from</span> <span word="predators">predators</span> <span word="and">and</span> <span word="ocean">ocean</span> <span word="currents">currents</span>.</p><p> <span word="Although">Although</span> <span word="they">they</span> <span word="have">have</span> <span word="voracious">voracious</span> <span word="appetites">appetites</span>， <span word="eating">eating</span> <span word="day">day</span> <span word="and">and</span> <span word="night">night</span>， <span word="sea">sea</span> <span word="cucumbers">cucumbers</span> <span word="have">have</span> <span word="the">the</span> <span word="capacity">capacity</span> <span word="to">to</span> <span word="become">become</span> <span word="quiescent">quiescent</span> <span word="and">and</span> <span word="live">live</span> <span word="at">at</span> <span word="a">a</span> <span word="low">low</span> <span word="metabolic">metabolic</span> <span word="rate">rate</span>-<span word="feeding">feeding</span> <span word="sparingly">sparingly</span> <span word="or">or</span> <span word="not">not</span> <span word="at">at</span> <span word="all">all</span> <span word="for">for</span> <span word="long">long</span> <span word="periods">periods</span>， <span word="so">so</span> <span word="that">that</span> <span word="the">the</span> <span word="marine">marine</span> <span word="organisms">organisms</span> <span word="that">that</span> <span word="provide">provide</span> <span word="their">their</span> <span word="food">food</span> <span word="have">have</span> <span word="a">a</span> <span word="chance">chance</span> <span word="to">to</span> <span word="multiply">multiply</span>. <span word="If">If</span> <span word="it">it</span> <span word="were">were</span> <span word="not">not</span> <span word="for">for</span> <span word="this">this</span> <span word="faculty">faculty</span>， <span word="they">they</span> <span word="would">would</span> <span word="devour">devour</span> <span word="all">all</span> <span word="the">the</span> <span word="food">food</span> <span word="available">available</span> <span word="in">in</span> <span word="a">a</span> <span word="short">short</span> <span word="time">time</span> <span word="and">and</span> <span word="would">would</span> <span word="probably">probably</span> <span word="starve">starve</span> <span word="themselves">themselves</span> <span word="out">out</span> <span word="of">of</span> <span word="existence">existence</span>.</p>
页:
[1]