英语六级阅读精华：虫子吃光墨西哥湾泄漏甲烷
<p> 根据最近公布的一项调查结果，在对墨西哥湾深水地平线钻井平台石油泄漏成功封堵后的调查发现微生物基本上吞噬掉了泄漏的甲烷，在四个月内把海水所含的甲烷含量降到了漏油事件前的水平。</p><p> <span word="Follow">Follow</span>-<span word="up">up</span> <span word="cruises">cruises</span> <span word="in">in</span> <span word="the">the</span> <span word="Gulf">Gulf</span> <span word="of">of</span> <span word="Mexico">Mexico</span> <span word="after">after</span> <span word="the">the</span> <span word="Deepwater">Deepwater</span> <span word="Horizon">Horizon</span> <span word="oil">oil</span> <span word="spill">spill</span> <span word="was">was</span> <span word="plugged">plugged</span> <span word="found">found</span> <span word="that">that</span> <span word="microorganisms">microorganisms</span> <span word="consumed">consumed</span> <span word="all">all</span> <span word="of">of</span> <span word="the">the</span> <span word="excess">excess</span> <span word="methane">methane</span>, <span word="reducing">reducing</span> <span word="levels">levels</span> <span word="to">to</span> <span word="background">background</span> <span word="within">within</span> <span word="about">about</span> <span word="four">four</span> <span word="months">months</span> <span word="of">of</span> <span word="the">the</span> <span word="start">start</span> <span word="of">of</span> <span word="the">the</span> <span word="spill">spill</span>, <span word="according">according</span> <span word="to">to</span> <span word="findings">findings</span> <span word="published">published</span> <span word="recently">recently</span>。</p><p> 真是让人吃惊，课题研究的带头人，得克萨斯大学的约翰凯瑟勒在《科学》杂志上这样写道，我们本来是认为仍旧有很多泄漏出来的甲烷在那里的，可事实是甲烷都消失了。</p><p> <span word="It">It</span> <span word="was">was</span> <span word="remarkable">remarkable</span>, <span word="said">said</span> <span word="John">John</span> <span word="Kessler">Kessler</span> <span word="of">of</span> <span word="Texas">Texas</span> <span word="AM">AM</span> <span word="University">University</span> <span word="in">in</span> <span word="College">College</span> <span word="Station">Station</span>, <span word="lead">lead</span> <span word="author">author</span> <span word="of">of</span> <span word="the">the</span> <span word="study">study</span>, <span word="in">in</span> <span word="Science">Science</span>. <span word="We">We</span> <span word="had">had</span> <span word="gone">gone</span> <span word="out">out</span> <span word="there">there</span> <span word="assuming">assuming</span> <span word="that">that</span> <span word="there">there</span> <span word="would">would</span> <span word="be">be</span> <span word="plenty">plenty</span> <span word="of">of</span> <span word="methane">methane</span> <span word="still">still</span> <span word="there">there</span> <span word="and">and</span> <span word="the">the</span> <span word="fact">fact</span> <span word="was">was</span> <span word="that">that</span> <span word="it">it</span> <span word="was">was</span> <span word="all">all</span> <span word="gone">gone</span>.</p><p> 甲烷吞噬微生物在科学已知的微生物族群里是占比最大的。团队探测到的氧气水平只能解释为甲烷的完全的被吞噬。这样的证据证实了是微生物使得泄漏的甲烷消失的。凯瑟勒说。对于原油泄漏来说，这消息不错，特别是甲烷是深水地平线钻井平台泄漏原油的最大组成部分。</p><p> <span word="Methane">Methane</span>-<span word="consuming">consuming</span> <span word="microbes">microbes</span> <span word="comprised">comprised</span> <span word="the">the</span> <span word="highest">highest</span> <span word="proportion">proportion</span> <span word="researchers">researchers</span> <span word="had">had</span> <span word="ever">ever</span> <span word="seen">seen</span> <span word="in">in</span> <span word="the">the</span> <span word="overall">overall</span> <span word="microbial">microbial</span> <span word="community">community</span>, <span word="and">and</span> <span word="the">the</span> <span word="oxygen">oxygen</span> <span word="levels">levels</span> <span word="the">the</span> <span word="team">team</span> <span word="measured">measured</span> <span word="could">could</span> <span word="only">only</span> <span word="be">be</span> <span word="explained">explained</span> <span word="by">by</span> <span word="complete">complete</span> <span word="consumption">consumption</span> <span word="of">of</span> <span word="the">the</span> <span word="methane">methane</span>. <span word="This">This</span> <span word="evidence">evidence</span> <span word="supported">supported</span> <span word="the">the</span> <span word="idea">idea</span> <span word="that">that</span> <span word="it">it</span> <span word="was">was</span> <span word="microbes">microbes</span> <span word="that">that</span> <span word="made">made</span> <span word="the">the</span> <span word="methane">methane</span> <span word="disappear">disappear</span>, <span word="Kessler">Kessler</span> <span word="said">said</span>.<span word="For">For</span> <span word="the">the</span> <span word="oil">oil</span> <span word="spill">spill</span>, <span word="it">it</span> <span word="was">was</span> <span word="a">a</span> <span word="rather">rather</span> <span word="good">good</span> <span word="story">story</span>, <span word="he">he</span> <span word="said">said</span>, <span word="especially">especially</span> <span word="since">since</span> <span word="methane">methane</span> <span word="was">was</span> <span word="the">the</span> <span word="largest">largest</span> <span word="component">component</span> <span word="of">of</span> <span word="the">the</span> <span word="Deepwater">Deepwater</span> <span word="Horizon">Horizon</span> <span word="spill">spill</span>。</p>
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