职称英语理工类阅读理解原文版练习(12)
<p> <span word="Why">Why</span> <span word="Humans">Humans</span> <span word="Walk">Walk</span> <span word="on">on</span> <span word="Two">Two</span> <span word="Legs">Legs</span> <span word="When">When</span> <span word="our">our</span> <span word="earliest">earliest</span> <span word="ancestors">ancestors</span> <span word="started">started</span> <span word="walking">walking</span> <span word="on">on</span> <span word="two">two</span> <span word="legs">legs</span>，<span word="they">they</span> <span word="took">took</span> <span word="the">the</span> <span word="first">first</span> <span word="steps">steps</span> <span word="toward">toward</span> <span word="becoming">becoming</span> <span word="human">human</span>, <span word="said">said</span> <span word="lead">lead</span> <span word="researcher">researcher</span> <span word="Michael">Michael</span> <span word="Sockol">Sockol</span> <span word="of">of</span> <span word="UC">UC</span> <span word="Davis">Davis</span>1.<span word="Our">Our</span> <span word="findings">findings</span> <span word="help">help</span> <span word="an">an</span>,<span word="swer">swer</span> <span word="why">why</span>. <span word="Sockol">Sockol</span> <span word="worked">worked</span> <span word="for">for</span> <span word="two">two</span> <span word="years">years</span> <span word="to">to</span> <span word="find">find</span> <span word="an">an</span> <span word="animal">animal</span> <span word="trainer">trainer</span> <span word="willing">willing</span> <span word="to">to</span> <span word="coax">coax</span> <span word="adult">adult</span> <span word="chimps">chimps</span> <span word="to">to</span> <span word="walk">walk</span> <span word="on">on</span> <span word="two">two</span> <span word="legs">legs</span> <span word="and">and</span> <span word="to">to</span> <span word="knucklewalk">knucklewalk</span> <span word="on">on</span> <span word="all">all</span> <span word="fours">fours</span> <span word="on">on</span> <span word="the">the</span> <span word="sort">sort</span> <span word="of">of</span> <span word="treadmill">treadmill</span> <span word="found">found</span> <span word="in">in</span> <span word="most">most</span> <span word="gyms">gyms</span>. <span word="Tile">Tile</span> <span word="researchers">researchers</span> <span word="found">found</span> <span word="that">that</span> <span word="human">human</span> <span word="walking">walking</span> <span word="used">used</span> <span word="about">about</span> 75 <span word="percent">percent</span> <span word="less">less</span> <span word="energy">energy</span> <span word="and">and</span> <span word="burned">burned</span> 75 <span word="percent">percent</span> <span word="fewer">fewer</span> <span word="calories">calories</span> <span word="than">than</span> <span word="quadrupedal">quadrupedal</span> <span word="and">and</span> <span word="bipedal">bipedal</span>2 <span word="walking">walking</span> <span word="in">in</span> <span word="chimpanzees">chimpanzees</span>. <span word="They">They</span> <span word="also">also</span> <span word="found">found</span> <span word="that">that</span> <span word="for">for</span> <span word="some">some</span> <span word="but">but</span> <span word="not">not</span> <span word="all">all</span> <span word="of">of</span> <span word="the">the</span> <span word="chimps">chimps</span>，<span word="walking">walking</span> <span word="on">on</span> <span word="two">two</span> <span word="legs">legs</span> <span word="was">was</span> <span word="no">no</span> <span word="more">more</span> <span word="costly">costly</span> <span word="than">than</span> <span word="knucklewalking">knucklewalking</span>. <span word="Taken">Taken</span> <span word="together">together</span>，<span word="the">the</span> <span word="findings">findings</span> <span word="provide">provide</span> <span word="support">support</span> <span word="for">for</span> <span word="the">the</span> <span word="hypothesis">hypothesis</span> <span word="that">that</span> <span word="anatomical">anatomical</span> <span word="differences">differences</span> <span word="affecting">affecting</span> <span word="gait">gait</span> <span word="existed">existed</span> <span word="among">among</span> <span word="our">our</span> <span word="earliest">earliest</span> <span word="apelike">apelike</span> <span word="ancestors">ancestors</span>，<span word="and">and</span> <span word="that">that</span> <span word="these">these</span> <span word="differences">differences</span> <span word="provided">provided</span> <span word="the">the</span> <span word="genetic">genetic</span> <span word="variation">variation</span> <span word="which">which</span> <span word="natural">natural</span> <span word="selection">selection</span> <span word="could">could</span> <span word="act">act</span> <span word="on">on</span> <span word="when">when</span> <span word="changes">changes</span> <span word="in">in</span> <span word="the">the</span> <span word="environment">environment</span> <span word="gave">gave</span> <span word="bipeds">bipeds</span> <span word="an">an</span> <span word="advantage">advantage</span> <span word="over">over</span> <span word="quadrupeds">quadrupeds</span>. <span word="This">This</span> <span word="isnt">isnt</span> <span word="the">the</span> <span word="complete">complete</span> <span word="answer">answer</span>, <span word="Soekol">Soekol</span> <span word="said">said</span>.<span word="But">But</span> <span word="its">its</span> <span word="a">a</span> <span word="good">good</span> <span word="piece">piece</span> <span word="of">of</span> <span word="a">a</span> <span word="puzzle">puzzle</span> <span word="humans">humans</span> <span word="have">have</span> <span word="always">always</span> <span word="wondered">wondered</span> <span word="about">about</span>;<span word="How">How</span> <span word="and">and</span> <span word="why">why</span> <span word="did">did</span> <span word="we">we</span> <span word="become">become</span> <span word="human">human</span>? <span word="And">And</span> <span word="why">why</span> <span word="do">do</span> <span word="we">we</span> <span word="alone">alone</span> <span word="walk">walk</span> <span word="on">on</span> <span word="two">two</span> <span word="legs">legs</span>? <span word="UC">UC</span> <span word="Davis">Davis</span>：加州大学戴维斯分校。<span word="UC">UC</span>是<span word="University">University</span> <span word="of">of</span> <span word="California">California</span>的缩写，该校有多个分校，<span word="UC">UC</span> <span word="Davis">Davis</span>是其中一个。<span word="Davis">Davis</span>以前是<span word="UC">UC</span> <span word="Berkeley">Berkeley</span>分校的农学院，后来独立小来。<span word="Davis">Davis</span>是一个大学城，很小的城市，<span word="Davis">Davis</span>校园基本就构成了这个城市。 <span word="bipedalism">bipedalism</span>：系<span word="bipedal">bipedal</span>的对应名词，这里后缀-<span word="ism">ism</span>表示特征、特性。 <span word="What">What</span> <span word="did">did</span> <span word="Michael">Michael</span> <span word="Sockol">Sockol</span> <span word="and">and</span> <span word="his">his</span> <span word="team">team</span> <span word="find">find</span> <span word="out">out</span> <span word="in">in</span> <span word="their">their</span> <span word="study">study</span> <span word="of">of</span> <span word="chimpanzees">chimpanzees</span>? <span word="B">B</span> <span word="The">The</span> <span word="evidence">evidence</span> <span word="why">why</span> <span word="our">our</span> <span word="apelike">apelike</span> <span word="ancestors">ancestors</span> <span word="came">came</span> <span word="to">to</span> <span word="walk">walk</span> <span word="on">on</span> <span word="four">four</span> <span word="legs">legs</span>. <span word="D">D</span> <span word="The">The</span> <span word="evidence">evidence</span> <span word="why">why</span> <span word="chimpanzees">chimpanzees</span> <span word="can">can</span> <span word="be">be</span> <span word="trained">trained</span> <span word="to">to</span> <span word="walk">walk</span> <span word="on">on</span> <span word="two">two</span> <span word="legs">legs</span>. <span word="A">A</span> <span word="While">While</span> <span word="the">the</span> <span word="chimps">chimps</span> <span word="worked">worked</span> <span word="in">in</span> <span word="the">the</span> <span word="lab">lab</span> ... <span word="C">C</span> <span word="While">While</span> <span word="the">the</span> <span word="chimps">chimps</span> <span word="tried">tried</span> <span word="to">to</span> <span word="figure">figure</span> <span word="out">out</span> <span word="what">what</span> <span word="they">they</span> <span word="should">should</span> <span word="do">do</span> ... <span word="What">What</span> <span word="was">was</span> <span word="the">the</span> <span word="result">result</span> <span word="of">of</span> <span word="the">the</span> <span word="finding">finding</span>，<span word="according">according</span> <span word="to">to</span> <span word="Paragraph">Paragraph</span> 5? <span word="B">B</span> <span word="One">One</span> <span word="chimp">chimp</span> <span word="used">used</span> <span word="less">less</span> <span word="energy">energy</span> <span word="walking">walking</span> <span word="on">on</span> <span word="two">two</span> <span word="legs">legs</span>. <span word="D">D</span> <span word="All">All</span> <span word="of">of</span> <span word="the">the</span> <span word="above">above</span>. <span word="A">A</span> <span word="Our">Our</span> <span word="apelike">apelike</span> <span word="ancestors">ancestors</span> <span word="were">were</span> <span word="anatomically">anatomically</span> <span word="different">different</span> <span word="but">but</span> <span word="had">had</span> <span word="the">the</span> <span word="same">same</span> <span word="gaits">gaits</span>. <span word="C">C</span> <span word="Our">Our</span> <span word="apelike">apelike</span> <span word="ancestors">ancestors</span> <span word="could">could</span> <span word="adapt">adapt</span> <span word="to">to</span> <span word="different">different</span> <span word="climate">climate</span> <span word="changes">changes</span> <span word="due">due</span> <span word="to">to</span> <span word="genetic">genetic</span> <span word="variation">variation</span>. <span word="What">What</span> <span word="does">does</span> <span word="fossil">fossil</span> <span word="and">and</span> <span word="molecular">molecular</span> <span word="evidence">evidence</span> <span word="tell">tell</span> <span word="us">us</span> <span word="about">about</span> <span word="our">our</span> <span word="earliest">earliest</span> <span word="ancestors">ancestors</span>? <span word="B">B</span> <span word="Due">Due</span> <span word="to">to</span> <span word="changes">changes</span> <span word="in">in</span> <span word="climate">climate</span>，<span word="they">they</span> <span word="were">were</span> <span word="forced">forced</span> <span word="to">to</span> <span word="travel">travel</span> <span word="between">between</span> <span word="food">food</span> <span word="patches">patches</span>. <span word="D">D</span> <span word="They">They</span> <span word="could">could</span> <span word="travel">travel</span> <span word="longer">longer</span> <span word="distances">distances</span> <span word="on">on</span> <span word="the">the</span> <span word="ground">ground</span> <span word="than">than</span> <span word="those">those</span> <span word="who">who</span> <span word="could">could</span> <span word="use">use</span> <span word="less">less</span> <span word="energy">energy</span>. 2． <span word="B">B</span> <span word="worked">worked</span> <span word="out">out</span>在此是运动，锻炼的意思，所以选择<span word="B">B</span>。 <span word="B">B</span> 第六段告诉了我们研究的两个假设：猿人祖先在解剖学意义上存在着差异，这一差异影响了它们的步态；这些差异在自然选择的过程中决定了遗传变异，而环境变化使得两足行走的猿人比起四足行走的猿人更有战势。<span word="A">A</span>、<span word="C">C</span>、<span word="D">D</span>都不是正确的说法，只有<span word="B">B</span>在该段中被提到。</p>
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