考研英语阅读篇章人脸是被打出来的
<p> 篇章：人脸是被打出来的</p><p> <span word="Biologists">Biologists</span> <span word="say">say</span> <span word="that">that</span> <span word="as">as</span> <span word="apes">apes</span> <span word="evolved">evolved</span> <span word="into">into</span> <span word="humans">humans</span>, <span word="their">their</span> <span word="faces">faces</span> <span word="took">took</span> <span word="on">on</span> <span word="fighting">fighting</span> <span word="features">features</span> <span word="such">such</span> <span word="as">as</span> <span word="thicker">thicker</span> <span word="jaws">jaws</span> <span word="and">and</span> <span word="foreheads">foreheads</span>.</p><p> 生物学家们认为，当类人猿进化成人类时，为了适应打斗，他们的下颌和额头变得更厚实。</p><p> <span word="The">The</span> <span word="characteristics">characteristics</span> <span word="were">were</span> <span word="previously">previously</span> <span word="thought">thought</span> <span word="to">to</span> <span word="be">be</span> <span word="adaptations">adaptations</span> <span word="for">for</span> <span word="a">a</span> <span word="diet">diet</span> <span word="of">of</span> <span word="hard">hard</span>-<span word="to">to</span>-<span word="chew">chew</span> <span word="foods">foods</span>, <span word="such">such</span> <span word="as">as</span> <span word="nuts">nuts</span>.</p><p> 之前，这种人脸特征被认为是为了适应那些难以咀嚼的食物，比如坚果。</p><p> <span word="But">But</span> <span word="researchers">researchers</span> <span word="at">at</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Utah">Utah</span> <span word="point">point</span> <span word="out">out</span> <span word="that">that</span> <span word="they">they</span> <span word="developed">developed</span> <span word="around">around</span> <span word="the">the</span> <span word="same">same</span> <span word="time">time</span> <span word="as">as</span> <span word="humans">humans</span> <span word="acquired">acquired</span> <span word="the">the</span> <span word="ability">ability</span> <span word="to">to</span> <span word="curl">curl</span> <span word="their">their</span> <span word="hand">hand</span> <span word="into">into</span> <span word="a">a</span> <span word="club">club</span>-<span word="like">like</span> <span word="fist">fist</span>.</p><p> 但犹他大学的研究者们指出，这种现象是和人类能够握拳这一现象同时出现的。</p><p> <span word="Professor">Professor</span> <span word="David">David</span> <span word="Carrier">Carrier</span> <span word="said">said</span> <span word="the">the</span> <span word="changes">changes</span> <span word="could">could</span> <span word="have">have</span> <span word="been">been</span> <span word="to">to</span> <span word="better">better</span> <span word="protect">protect</span> <span word="the">the</span> <span word="face">face</span> <span word="when">when</span> <span word="punched">punched</span>.</p><p> 大卫-卡里尔教授认为，人脸的改变，是为了被拳头击打时对脸部提供更好的保护。</p><p> <span word="He">He</span> <span word="said">said</span>: <span word="If">If</span> <span word="indeed">indeed</span> <span word="the">the</span> <span word="evolution">evolution</span> <span word="of">of</span> <span word="our">our</span> <span word="hand">hand</span> <span word="proportions">proportions</span> <span word="were">were</span> <span word="associated">associated</span> <span word="with">with</span> <span word="selection">selection</span> <span word="for">for</span> <span word="fighting">fighting</span> <span word="behaviour">behaviour</span> <span word="you">you</span> <span word="might">might</span> <span word="expect">expect</span> <span word="the">the</span> <span word="primary">primary</span> <span word="target">target</span>, <span word="the">the</span> <span word="face">face</span>, <span word="to">to</span> <span word="have">have</span> <span word="undergone">undergone</span> <span word="evolution">evolution</span> <span word="to">to</span> <span word="better">better</span> <span word="protect">protect</span> <span word="it">it</span> <span word="from">from</span> <span word="injury">injury</span> <span word="when">when</span> <span word="punched">punched</span>.</p><p> 他说：如果我们的手部比例真的是为了打斗才进化成现在的样子，那可想而知拳头的主要目标脸，为了在打斗中更好的保护自己，发生了趋同进化。</p>
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