阅读理解之聪明大脑所带来的问题
<p>分享一篇阅读理解：</p><p>课文内容</p><p>词汇: 生物</p><p><span word="Is">Is</span> <span word="it">it</span> <span word="possible">possible</span> <span word="to">to</span> <span word="be">be</span> <span word="too">too</span> <span word="clever">clever</span>? <span word="Could">Could</span> <span word="it">it</span> <span word="be">be</span> <span word="that">that</span> <span word="a">a</span> <span word="big">big</span> <span word="brain">brain</span> <span word="is">is</span> <span word="actually">actually</span> <span word="a">a</span> <span word="dangerousasset">dangerousasset</span>?</p><p><span word="Whilst">Whilst</span> <span word="the">the</span> <span word="brainy">brainy</span> <span word="human">human</span> <span word="species">species</span> <span word="goes">goes</span> <span word="from">from</span> <span word="strength">strength</span> <span word="to">to</span> <span word="strength">strength</span>, <span word="a">a</span> <span word="study">study</span> <span word="suggests">suggests</span> <span word="that">that</span> <span word="having">having</span> <span word="an">an</span> <span word="abundance">abundance</span> <span word="of">of</span> <span word="grey">grey</span> <span word="matter">matter</span> <span word="directly">directly</span> <span word="increases">increases</span> <span word="the">the</span> <span word="risk">risk</span> <span word="of">of</span> <span word="extinction">extinction</span> <span word="in">in</span> <span word="our">our</span> <span word="mammal">mammal</span> <span word="cousins">cousins</span>.</p><p><span word="Biologist">Biologist</span> <span word="Manuela">Manuela</span> <span word="Gonzalez">Gonzalez</span>-<span word="Suarez">Suarez</span>, <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Reading">Reading</span>, <span word="says">says</span> <span word="that">that</span> <span word="big">big</span> <span word="brains">brains</span> <span word="come">come</span> <span word="with">with</span> <span word="a">a</span> <span word="clear">clear</span> <span word="downside">downside</span>.</p><p>"<span word="The">The</span> <span word="cost">cost</span> <span word="is">is</span> <span word="too">too</span> <span word="high">high</span>," <span word="she">she</span> <span word="told">told</span> <span word="BBC">BBC</span> <span word="Future">Future</span>. <span word="They">They</span> <span word="require">require</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="energy">energy</span> <span word="to">to</span> <span word="grow">grow</span> <span word="and">and</span> <span word="maintain">maintain</span>. <span word="Large">Large</span>-<span word="brained">brained</span> <span word="animals">animals</span> <span word="also">also</span> <span word="have">have</span> <span word="longer">longer</span> <span word="gestational">gestational</span> <span word="periods">periods</span>, <span word="meaning">meaning</span> <span word="they">they</span> <span word="produce">produce</span> <span word="fewer">fewer</span> <span word="offspring">offspring</span>. <span word="And">And</span> <span word="their">their</span> <span word="young">young</span> <span word="need">need</span> <span word="greater">greater</span> <span word="parental">parental</span> <span word="attention">attention</span> <span word="until">until</span> <span word="they">they</span> <span word="become">become</span> <span word="independent">independent</span>.</p><p><span word="These">These</span> <span word="traits">traits</span> <span word="mean">mean</span> "<span word="populations">populations</span> <span word="cannot">cannot</span> <span word="grow">grow</span> <span word="fast">fast</span>, <span word="or">or</span> <span word="quickly">quickly</span> <span word="compensate">compensate</span> <span word="for">for</span> <span word="additional">additional</span> <span word="mortality">mortality</span>," <span word="she">she</span> <span word="says">says</span>.</p><p><span word="In">In</span> <span word="short">short</span>, <span word="big">big</span> <span word="brains">brains</span> <span word="are">are</span> <span word="an">an</span> <span word="investment">investment</span> <span word="not">not</span> <span word="all">all</span> <span word="animals">animals</span> <span word="can">can</span> <span word="afford">afford</span>. <span word="And">And</span> <span word="thisprecarious">thisprecarious</span> <span word="situation">situation</span> <span word="is">is</span> <span word="made">made</span> <span word="worse">worse</span> <span word="by">by</span> <span word="the">the</span> <span word="fact">fact</span> <span word="that">that</span> <span word="many">many</span> <span word="large">large</span> <span word="mammals">mammals</span> <span word="are">are</span> <span word="themselves">themselves</span> <span word="the">the</span> <span word="target">target</span> <span word="of">of</span> <span word="poaching">poaching</span> <span word="or">or</span> <span word="live">live</span> <span word="in">in</span> <span word="threatened">threatened</span> <span word="habitats">habitats</span>.</p><p><span word="Some">Some</span> <span word="animals">animals</span> <span word="have">have</span> <span word="long">long</span> <span word="since">since</span> <span word="decided">decided</span> <span word="that">that</span> <span word="brains">brains</span> <span word="weren">weren</span>’<span word="t">t</span> <span word="necessary">necessary</span>. <span word="BBC">BBC</span> <span word="Future">Future</span> <span word="suggests">suggests</span> <span word="that">that</span> <span word="sponges">sponges</span> <span word="evolved">evolved</span> <span word="to">to</span> <span word="lose">lose</span> <span word="their">their</span> <span word="brains">brains</span> <span word="over">over</span> <span word="time">time</span>, <span word="as">as</span> <span word="they">they</span> <span word="offered">offered</span> <span word="no">no</span> <span word="tangible">tangible</span> <span word="benefits">benefits</span>.</p><p><span word="But">But</span> <span word="what">what</span> <span word="about">about</span> <span word="humans">humans</span>? <span word="We">We</span> <span word="are">are</span> <span word="the">the</span> <span word="most">most</span> <span word="intelligent">intelligent</span> <span word="species">species</span> <span word="on">on</span> <span word="Earth">Earth</span>. <span word="We">We</span> <span word="havetamed">havetamed</span> <span word="the">the</span> <span word="natural">natural</span> <span word="environment">environment</span>, <span word="developed">developed</span> <span word="incredible">incredible</span> <span word="technologies">technologies</span>, <span word="and">and</span> <span word="settled">settled</span> <span word="across">across</span> <span word="almost">almost</span> <span word="every">every</span> <span word="corner">corner</span> <span word="of">of</span> <span word="the">the</span> <span word="planet">planet</span>. <span word="But">But</span> <span word="all">all</span> <span word="this">this</span> <span word="may">may</span> <span word="be">be</span> <span word="exacerbating">exacerbating</span> <span word="the">the</span> <span word="problem">problem</span> <span word="for">for</span> <span word="other">other</span> <span word="species">species</span>.</p>
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