职称英语理工类AB级阅读理解精选练习(4)
<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="answer">answer</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="The">The</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="Sockol">Sockol</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="chimpanzee">chimpanzee</span> <span word="n">n</span>. 黑猩猩的 <span word="metabolic">metabolic</span> <span word="adj">adj</span>.代谢的<span word="Miocene">Miocene</span> <span word="n">n</span>. <span word="adj">adj</span>. 中新世 注释： 2. <span word="quadrupedal">quadrupedal</span> <span word="and">and</span> <span word="bipedal">bipedal</span>：<span word="quad">quad</span>-：构词词素，是四的意思;<span word="bi">bi</span>-:构词词素，是二的意思;<span word="ped">ped</span>-：构词词素，是脚的意思;-<span word="al">al</span>是构成形容词的后缀，表示...的。因此，<span word="quadrupedal">quadrupedal</span>意为四足动物的，<span word="bipedal">bipedal</span>意为二足动物的。 练习： <span word="A">A</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="use">use</span> <span word="treadmills">treadmills</span>. <span word="C">C</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="two">two</span> <span word="legs">legs</span>. 2. <span word="Which">Which</span> <span word="of">of</span> <span word="the">the</span> <span word="following">following</span> <span word="best">best</span> <span word="interprets">interprets</span> <span word="the">the</span> <span word="meaning">meaning</span> <span word="ofWhile">ofWhile</span> <span word="the">the</span> <span word="chimps">chimps</span> <span word="worked">worked</span> <span word="out">out</span>, .? <span word="B">B</span>) <span word="While">While</span> <span word="the">the</span> <span word="chimps">chimps</span> <span word="exercised">exercised</span> <span word="in">in</span> <span word="the">the</span> <span word="gym">gym</span>. <span word="D">D</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="understand">understand</span> <span word="the">the</span> <span word="instructions">instructions</span>.</p>
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