英语六级听力练习之狗狗和环保
<p> <span word="Scoop">Scoop</span> <span word="That">That</span> <span word="Poop">Poop</span></p><p> 我好无辜的</p><p> <span word="Actually">Actually</span>, <span word="dog">dog</span> <span word="poop">poop</span> <span word="turns">turns</span> <span word="out">out</span> <span word="to">to</span> <span word="have">have</span> <span word="a">a</span> <span word="pretty">pretty</span> <span word="big">big</span> <span word="environmental">environmental</span> <span word="impact">impact</span>. <span word="If">If</span> <span word="you">you</span> <span word="think">think</span> <span word="that">that</span> <span word="two">two</span> <span word="in">in</span> <span word="five">five</span> <span word="households">households</span> <span word="in">in</span> <span word="the">the</span> <span word="U">U</span>.<span word="S">S</span>. <span word="have">have</span> <span word="at">at</span> <span word="least">least</span> <span word="one">one</span> <span word="dog">dog</span> <span word="and">and</span> <span word="that">that</span> <span word="about">about</span> <span word="forty">forty</span> <span word="percent">percent</span> <span word="of">of</span> <span word="Americans">Americans</span> <span word="dont">dont</span> <span word="clean">clean</span> <span word="up">up</span> <span word="after">after</span> <span word="their">their</span> <span word="pooches">pooches</span>, <span word="well">well</span>, <span word="all">all</span> <span word="that">that</span> <span word="poop">poop</span> <span word="really">really</span> <span word="adds">adds</span> <span word="up">up</span>. <span word="In">In</span> <span word="fact">fact</span>, <span word="its">its</span> <span word="what">what</span> <span word="scientists">scientists</span> <span word="call">call</span> <span word="the">the</span> <span word="Fido">Fido</span> <span word="hypothesis">hypothesis</span>.</p><p> 狗狗便便严重污染环境。如果美国2/5家庭就养一只狗狗且当中大约40%的主人不收拾狗狗的便便。所有这些便便加起来也就是科学家说的狗狗假说。。</p><p> <span word="Hey">Hey</span>, <span word="my">my</span> <span word="dogs">dogs</span> <span word="name">name</span> <span word="is">is</span> <span word="Fido">Fido</span>.</p><p> 我的狗狗就叫<span word="Fido">Fido</span>。</p><p> <span word="They">They</span> <span word="conjecture">conjecture</span> <span word="that">that</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="that">that</span> <span word="waste">waste</span> <span word="ends">ends</span> <span word="up">up</span> <span word="in">in</span> <span word="waterways">waterways</span>. <span word="Recent">Recent</span> <span word="studies">studies</span>, <span word="in">in</span> <span word="fact">fact</span>, <span word="suggest">suggest</span> <span word="that">that</span> <span word="dogs">dogs</span> <span word="are">are</span> <span word="in">in</span> <span word="third">third</span> <span word="or">or</span> <span word="fourth">fourth</span> <span word="place">place</span> <span word="on">on</span> <span word="the">the</span> <span word="list">list</span> <span word="of">of</span> <span word="contributors">contributors</span> <span word="to">to</span> <span word="bacteria">bacteria</span> <span word="in">in</span> <span word="water">water</span>. <span word="Talk">Talk</span> <span word="about">about</span> <span word="grossfecal">grossfecal</span> <span word="matter">matter</span> <span word="is">is</span> <span word="full">full</span> <span word="of">of</span> <span word="disease">disease</span>-<span word="causing">causing</span> <span word="bacteria">bacteria</span> <span word="like">like</span> <span word="E">E</span>. <span word="Coli">Coli</span>, <span word="salmonella">salmonella</span>, <span word="and">and</span> <span word="giardia">giardia</span>.</p><p> 科学家推想，水道阻塞的罪魁祸首就是这些便便。近日有研究表明，造成水里滋生细菌的元凶狗狗排第三或第四。令人作恶的这些细菌可以致癌，比如：大肠埃希菌、沙门氏菌、鞭毛虫</p><p> <span word="Now">Now</span> <span word="that">that</span> <span word="bacteria">bacteria</span>-<span word="tracking">tracking</span> <span word="methods">methods</span> <span word="have">have</span> <span word="gotten">gotten</span> <span word="better">better</span>, <span word="scientists">scientists</span> <span word="estimate">estimate</span> <span word="that">that</span> <span word="in">in</span> <span word="some">some</span> <span word="areas">areas</span>, 20 <span word="to">to</span> 30 <span word="percent">percent</span> <span word="of">of</span> <span word="the">the</span> <span word="bacteria">bacteria</span> <span word="in">in</span> <span word="a">a</span> <span word="stream">stream</span> <span word="comes">comes</span> <span word="from">from</span> <span word="dogs">dogs</span>.</p><p> 细菌源追踪技术的日臻完善，科学家估计，部分地区20%到30%的细菌是由狗狗造成的。</p>
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