新GRE阅读练习题（27）
<p> 编辑点评： 新<span word="GRE">GRE</span>阅读考试考察大家的方面较多，除了大家需要拥有一定的词汇量以外，还需大家在解题的时候能够迅速了解出题者的意图，这就需要大家充分发挥自己的逻辑理解能力和推理能力，大家可以利用下文的新<span word="GRE">GRE</span>阅读短文练习进行练习。</p><p> <span word="Certain">Certain</span> <span word="extremely">extremely</span> <span word="harmful">harmful</span> <span word="bacteria">bacteria</span> <span word="found">found</span> <span word="only">only</span> <span word="in">in</span> <span word="sewage">sewage</span> <span word="are">are</span> <span word="difficult">difficult</span> <span word="to">to</span> <span word="detect">detect</span> <span word="directly">directly</span>. <span word="Testing">Testing</span> <span word="for">for</span> <span word="E">E</span>. <span word="coli">coli</span>, <span word="an">an</span> <span word="easily">easily</span> <span word="detected">detected</span> <span word="and">and</span> <span word="less">less</span> <span word="harmful">harmful</span> <span word="type">type</span> <span word="of">of</span> <span word="bacteria">bacteria</span>, <span word="in">in</span> <span word="ocean">ocean</span> <span word="water">water</span> <span word="would">would</span> <span word="be">be</span> <span word="a">a</span> <span word="reliable">reliable</span> <span word="way">way</span> <span word="of">of</span> <span word="determining">determining</span> <span word="whether">whether</span> <span word="or">or</span> <span word="not">not</span> <span word="these">these</span> <span word="more">more</span> <span word="harmful">harmful</span> <span word="bac">bac</span>-<span word="teria">teria</span> <span word="are">are</span> <span word="present">present</span>, <span word="since">since</span> <span word="ocean">ocean</span> <span word="water">water</span> <span word="contains">contains</span> <span word="E">E</span>. <span word="Coli">Coli</span> <span word="only">only</span> <span word="if">if</span> <span word="the">the</span> <span word="water">water</span> <span word="is">is</span> <span word="contaminated">contaminated</span> <span word="with">with</span> <span word="sewage">sewage</span> <span word="that">that</span> <span word="contains">contains</span> <span word="the">the</span> <span word="harmful">harmful</span> <span word="bacteria">bacteria</span>.</p><p> <span word="Which">Which</span> <span word="of">of</span> <span word="the">the</span> <span word="following">following</span>, <span word="if">if</span> <span word="true">true</span>, <span word="most">most</span> <span word="seriously">seriously</span> <span word="weakens">weakens</span> <span word="the">the</span> <span word="argument">argument</span>?</p><p> <span word="There">There</span> <span word="are">are</span> <span word="many">many</span> <span word="different">different</span> <span word="strains">strains</span> <span word="of">of</span> <span word="the">the</span> <span word="E">E</span>. <span word="coli">coli</span> <span word="bacteria">bacteria</span>, <span word="and">and</span> <span word="only">only</span> <span word="some">some</span> <span word="of">of</span> <span word="these">these</span> <span word="strains">strains</span> <span word="are">are</span> <span word="harmful">harmful</span>.</p><p> <span word="Some">Some</span> <span word="types">types</span> <span word="of">of</span> <span word="bacteria">bacteria</span> <span word="found">found</span> <span word="in">in</span> <span word="sewage">sewage</span> <span word="are">are</span> <span word="neither">neither</span> <span word="disease">disease</span>-<span word="causing">causing</span> <span word="nor">nor</span> <span word="difficult">difficult</span> <span word="to">to</span> <span word="detect">detect</span> <span word="directly">directly</span>.</p><p> <span word="Some">Some</span> <span word="of">of</span> <span word="the">the</span> <span word="types">types</span> <span word="of">of</span> <span word="bacteria">bacteria</span> <span word="found">found</span> <span word="in">in</span> <span word="sewage">sewage</span> <span word="along">along</span> <span word="with">with</span> <span word="E">E</span>. <span word="coli">coli</span> <span word="are">are</span> <span word="not">not</span> <span word="harmful">harmful</span> <span word="to">to</span> <span word="people">people</span> <span word="unless">unless</span> <span word="the">the</span> <span word="bacteria">bacteria</span> <span word="are">are</span> <span word="ingested">ingested</span> <span word="in">in</span> <span word="large">large</span> <span word="quantities">quantities</span>.</p><p> <span word="E">E</span>. <span word="coli">coli</span> <span word="dies">dies</span> <span word="out">out</span> <span word="much">much</span> <span word="more">more</span> <span word="quickly">quickly</span> <span word="than">than</span> <span word="some">some</span> <span word="of">of</span> <span word="the">the</span> <span word="more">more</span> <span word="harmful">harmful</span> <span word="bacteria">bacteria</span> <span word="found">found</span> <span word="in">in</span> <span word="sewage">sewage</span> <span word="and">and</span> <span word="then">then</span> <span word="can">can</span> <span word="no">no</span> <span word="longer">longer</span> <span word="be">be</span> <span word="easily">easily</span> <span word="detected">detected</span>.</p><p> <span word="Some">Some</span> <span word="of">of</span> <span word="the">the</span> <span word="types">types</span> <span word="of">of</span> <span word="bacteria">bacteria</span> <span word="found">found</span> <span word="in">in</span> <span word="sewage">sewage</span> <span word="along">along</span> <span word="with">with</span> <span word="E">E</span>. <span word="coli">coli</span> <span word="reproduce">reproduce</span> <span word="at">at</span> <span word="a">a</span> <span word="slower">slower</span> <span word="rate">rate</span> <span word="than">than</span> <span word="E">E</span>. <span word="coli">coli</span>.</p>
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