2014年英语六级阅读练习及答案(36)
<p> <span word="Modern">Modern</span> <span word="scientists">scientists</span> <span word="divide">divide</span> <span word="the">the</span> <span word="process">process</span> <span word="of">of</span> <span word="dying">dying</span> <span word="into">into</span> <span word="two">two</span> <span word="stagesclinical">stagesclinical</span> <span word="or">or</span> . <span word="Biological">Biological</span> <span word="death">death</span> <span word="occurs">occurs</span> <span word="when">when</span> <span word="changes">changes</span> <span word="in">in</span> <span word="the">the</span> <span word="organism">organism</span> <span word="lead">lead</span> <span word="to">to</span> <span word="the">the</span> <span word="disintegration">disintegration</span> <span word="of">of</span> <span word="vital">vital</span> <span word="cells">cells</span> <span word="and">and</span> <span word="tissues">tissues</span>. <span word="Death">Death</span> <span word="is">is</span> <span word="then">then</span> <span word="irreversible">irreversible</span> <span word="and">and</span> <span word="final">final</span>.</p><p> <span word="Scientists">Scientists</span> <span word="have">have</span> <span word="been">been</span> <span word="seeking">seeking</span> <span word="a">a</span> <span word="way">way</span> <span word="to">to</span> <span word="prolong">prolong</span> <span word="the">the</span> <span word="period">period</span> <span word="of">of</span> <span word="clinical">clinical</span> <span word="death">death</span> <span word="so">so</span> <span word="sleep">sleep</span>. <span word="By">By</span> <span word="slowing">slowing</span> <span word="down">down</span> <span word="the">the</span> <span word="bodys">bodys</span> <span word="metabolism">metabolism</span> , <span word="cooling">cooling</span> <span word="delays">delays</span> <span word="the">the</span> <span word="processes">processes</span> <span word="leading">leading</span> <span word="to">to</span> <span word="biological">biological</span> <span word="death">death</span>.</p><p> <span word="To">To</span> <span word="illustrate">illustrate</span> <span word="how">how</span> <span word="this">this</span> <span word="works">works</span>, <span word="scientists">scientists</span> <span word="performed">performed</span> <span word="an">an</span> <span word="experiment">experiment</span> <span word="on">on</span> <span word="a">a</span> <span word="six">six</span>-<span word="year">year</span>-<span word="old">old</span> <span word="female">female</span> <span word="monkey">monkey</span> <span word="called">called</span> <span word="Keta">Keta</span>. <span word="The">The</span> <span word="scientists">scientists</span> <span word="put">put</span> <span word="Keta">Keta</span> <span word="to">to</span> <span word="sleep">sleep</span> <span word="with">with</span> <span word="a">a</span> <span word="narcotic">narcotic</span>. <span word="Then">Then</span> <span word="they">they</span> <span word="surrounded">surrounded</span> <span word="her">her</span> <span word="body">body</span> <span word="with">with</span> <span word="ice">ice</span>-<span word="bags">bags</span> <span word="and">and</span> <span word="began">began</span> <span word="checking">checking</span> <span word="her">her</span> <span word="body">body</span> <span word="temperature">temperature</span>. <span word="When">When</span> <span word="it">it</span> <span word="had">had</span> <span word="dropped">dropped</span> <span word="to">to</span> 28 <span word="degrees">degrees</span> <span word="the">the</span> <span word="scientists">scientists</span> <span word="began">began</span> <span word="draining">draining</span> <span word="blood">blood</span> <span word="from">from</span> <span word="an">an</span> <span word="its">its</span> <span word="body">body</span>. <span word="The">The</span> <span word="monkeys">monkeys</span> <span word="blood">blood</span> <span word="pressure">pressure</span> <span word="decreased">decreased</span> <span word="and">and</span> <span word="an">an</span> <span word="hour">hour</span> <span word="later">later</span> <span word="both">both</span> <span word="the">the</span> <span word="heart">heart</span> <span word="and">and</span> <span word="breathing">breathing</span> <span word="stopped">stopped</span>; <span word="clinical">clinical</span> <span word="death">death</span> <span word="set">set</span> <span word="in">in</span>. <span word="For">For</span> <span word="twenty">twenty</span> <span word="minutes">minutes</span> <span word="Keta">Keta</span> <span word="remained">remained</span> <span word="in">in</span> <span word="this">this</span> <span word="state">state</span>. <span word="Her">Her</span> <span word="temperature">temperature</span> <span word="dropped">dropped</span> <span word="to">to</span> 22 <span word="degrees">degrees</span>. <span word="At">At</span> <span word="this">this</span> <span word="point">point</span> <span word="the">the</span> <span word="scientists">scientists</span> <span word="pumped">pumped</span> <span word="blood">blood</span> <span word="into">into</span> <span word="its">its</span> <span word="body">body</span> <span word="in">in</span> <span word="the">the</span> <span word="direction">direction</span> <span word="of">of</span> <span word="the">the</span> <span word="heart">heart</span> <span word="and">and</span> <span word="started">started</span> <span word="artificial">artificial</span> <span word="breathing">breathing</span>. <span word="After">After</span> <span word="two">two</span> <span word="minutes">minutes</span> <span word="the">the</span> <span word="monkeys">monkeys</span> <span word="heart">heart</span> <span word="became">became</span> <span word="active">active</span> <span word="once">once</span> <span word="more">more</span>. <span word="After">After</span> <span word="fifteen">fifteen</span> <span word="minutes">minutes</span>, <span word="spontaneous">spontaneous</span> <span word="breathing">breathing</span> <span word="began">began</span>, <span word="and">and</span> <span word="after">after</span> <span word="four">four</span> <span word="hours">hours</span> <span word="Keta">Keta</span> <span word="opened">opened</span> <span word="her">her</span> <span word="eyes">eyes</span> <span word="and">and</span> <span word="lifted">lifted</span> <span word="her">her</span> <span word="head">head</span>. <span word="After">After</span> <span word="six">six</span> <span word="hours">hours</span>, <span word="when">when</span> <span word="the">the</span> <span word="scientists">scientists</span> <span word="tried">tried</span> <span word="to">to</span> <span word="give">give</span> <span word="her">her</span> <span word="a">a</span> <span word="penicillin">penicillin</span> <span word="injection">injection</span>, <span word="Keta">Keta</span> <span word="seized">seized</span> <span word="the">the</span> <span word="syringe">syringe</span> <span word="and">and</span> <span word="ran">ran</span> <span word="with">with</span> <span word="it">it</span> <span word="around">around</span> <span word="the">the</span> <span word="room">room</span>. <span word="Her">Her</span> <span word="behavior">behavior</span> <span word="differed">differed</span> <span word="little">little</span> <span word="from">from</span> <span word="that">that</span> <span word="of">of</span> <span word="a">a</span> <span word="healthy">healthy</span> <span word="animal">animal</span>.</p><p> 26. <span word="This">This</span> <span word="passage">passage</span> <span word="focuses">focuses</span> <span word="on">on</span></p>
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