职称英语理工类阅读理解复习必备训练题(5)
<p> <span word="How">How</span> <span word="the">the</span> <span word="First">First</span> <span word="Stars">Stars</span> <span word="in">in</span> <span word="the">the</span> <span word="Universe">Universe</span> <span word="Came">Came</span> <span word="into">into</span> <span word="Existence">Existence</span> <span word="The">The</span> <span word="composition">composition</span> <span word="of">of</span> <span word="the">the</span> <span word="early">early</span> <span word="universe">universe</span> <span word="was">was</span> <span word="quite">quite</span> <span word="different">different</span> <span word="from">from</span> <span word="that">that</span> <span word="of">of</span> <span word="today">today</span>, <span word="and">and</span> <span word="the">the</span> <span word="physics">physics</span> <span word="that">that</span> <span word="governed">governed</span> <span word="the">the</span> <span word="early">early</span> <span word="universe">universe</span> <span word="were">were</span> <span word="also">also</span> <span word="somewhat">somewhat</span> <span word="simpler">simpler</span>. <span word="Dr">Dr</span>. <span word="Naoki">Naoki</span> <span word="Yoshida">Yoshida</span> <span word="and">and</span> <span word="colleagues">colleagues</span> <span word="in">in</span> <span word="Japan">Japan</span> <span word="and">and</span> <span word="the">the</span> <span word="U">U</span>. <span word="S">S</span>. <span word="incorporated">incorporated</span> <span word="these">these</span> <span word="conditions">conditions</span> <span word="of">of</span> <span word="the">the</span> <span word="early">early</span> <span word="universe">universe</span>, <span word="sometimes">sometimes</span> <span word="referred">referred</span> <span word="to">to</span> <span word="as">as</span> <span word="the">the</span> <span word="cosmic">cosmic</span> <span word="dark">dark</span> <span word="ages">ages</span>, <span word="to">to</span> <span word="simulate">simulate</span> <span word="the">the</span> <span word="formation">formation</span> <span word="Of">Of</span> <span word="an">an</span> <span word="astronomical">astronomical</span> <span word="object">object</span> <span word="that">that</span> <span word="would">would</span> <span word="eventually">eventually</span> <span word="shine">shine</span> <span word="its">its</span> <span word="light">light</span> <span word="into">into</span> <span word="this">this</span> <span word="darkness">darkness</span>. <span word="According">According</span> <span word="to">to</span> <span word="their">their</span> <span word="simulation">simulation</span>, <span word="gravity">gravity</span> <span word="acted">acted</span> <span word="on">on</span> <span word="minute">minute</span> <span word="density">density</span> <span word="variations">variations</span> <span word="in">in</span> <span word="matter">matter</span>, <span word="gases">gases</span>, <span word="and">and</span> <span word="the">the</span> <span word="mysterious">mysterious</span> <span word="dark">dark</span> <span word="matter">matter</span> <span word="of">of</span> <span word="the">the</span> <span word="universe">universe</span> <span word="after">after</span> <span word="the">the</span> <span word="Big">Big</span> <span word="Bang">Bang</span> <span word="in">in</span> <span word="order">order</span> <span word="to">to</span> <span word="form">form</span> <span word="this">this</span> <span word="early">early</span> <span word="stage">stage</span> <span word="of">of</span> <span word="a">a</span> <span word="star">star</span> - <span word="a">a</span> <span word="protostar">protostar</span> <span word="with">with</span> <span word="a">a</span> <span word="mass">mass</span> <span word="of">of</span> <span word="just">just</span> <span word="one">one</span> <span word="percent">percent</span> <span word="of">of</span> <span word="our">our</span> <span word="sun">sun</span>. <span word="The">The</span> <span word="simulation">simulation</span> <span word="reveals">reveals</span> <span word="how">how</span> <span word="pre">pre</span>-<span word="stellar">stellar</span> <span word="gases">gases</span> <span word="would">would</span> <span word="have">have</span> <span word="actually">actually</span> <span word="evolved">evolved</span> <span word="under">under</span> <span word="the">the</span> <span word="simpler">simpler</span> <span word="physics">physics</span> <span word="of">of</span> <span word="the">the</span> <span word="early">early</span> <span word="universe">universe</span> <span word="to">to</span> <span word="form">form</span> <span word="this">this</span> <span word="protostar">protostar</span>. <span word="Dr">Dr</span>. <span word="Yoshidas">Yoshidas</span> <span word="simulation">simulation</span> <span word="also">also</span> <span word="shows">shows</span> <span word="that">that</span> <span word="the">the</span> <span word="protostar">protostar</span> <span word="would">would</span> <span word="likely">likely</span> <span word="evolve">evolve</span> <span word="into">into</span> <span word="a">a</span> <span word="massive">massive</span> <span word="star">star</span> <span word="capable">capable</span> <span word="of">of</span> <span word="synthesizing">synthesizing</span> <span word="heavy">heavy</span> <span word="elements">elements</span>, <span word="not">not</span> <span word="just">just</span> <span word="in">in</span> <span word="later">later</span> <span word="generations">generations</span> <span word="of">of</span> <span word="stars">stars</span>, <span word="but">but</span> <span word="soon">soon</span> <span word="after">after</span> <span word="the">the</span> <span word="Big">Big</span> <span word="Bang">Bang</span>. <span word="Their">Their</span> <span word="simulation">simulation</span> <span word="of">of</span> <span word="the">the</span> <span word="birth">birth</span> <span word="of">of</span> <span word="a">a</span> <span word="protostar">protostar</span> <span word="in">in</span> <span word="the">the</span> <span word="early">early</span> <span word="universe">universe</span> <span word="signifies">signifies</span> <span word="a">a</span> <span word="key">key</span> <span word="step">step</span> <span word="toward">toward</span> <span word="the">the</span> <span word="ambitious">ambitious</span> <span word="goal">goal</span> <span word="of">of</span> <span word="piecing">piecing</span> <span word="together">together</span> <span word="the">the</span> <span word="formation">formation</span> <span word="of">of</span> <span word="an">an</span> <span word="entire">entire</span> <span word="primordial">primordial</span> <span word="star">star</span> <span word="and">and</span> <span word="of">of</span> <span word="predicting">predicting</span> <span word="the">the</span> <span word="mass">mass</span> <span word="and">and</span> <span word="properties">properties</span> <span word="of">of</span> <span word="these">these</span> <span word="first">first</span> <span word="stars">stars</span> <span word="of">of</span> <span word="the">the</span> <span word="universe">universe</span>. <span word="More">More</span> <span word="powerful">powerful</span> <span word="computers">computers</span>, <span word="more">more</span> <span word="physical">physical</span> <span word="data">data</span>, <span word="and">and</span> <span word="an">an</span> <span word="even">even</span> <span word="larger">larger</span> <span word="range">range</span> <span word="will">will</span> <span word="be">be</span> <span word="needed">needed</span> <span word="for">for</span> <span word="further">further</span> <span word="calculations">calculations</span> <span word="and">and</span> <span word="simulations">simulations</span>, <span word="but">but</span> <span word="these">these</span> <span word="researchers">researchers</span> <span word="hope">hope</span> <span word="to">to</span> <span word="eventually">eventually</span> <span word="extend">extend</span> <span word="this">this</span> <span word="simulation">simulation</span> <span word="to">to</span> <span word="the">the</span> <span word="point">point</span> <span word="of">of</span> <span word="nuclear">nuclear</span> <span word="reaction">reaction</span> <span word="initiation">initiation</span> <span word="when">when</span> <span word="a">a</span> <span word="stellar">stellar</span> <span word="object">object</span> <span word="becomes">becomes</span> <span word="a">a</span> <span word="true">true</span> <span word="star">star</span>. <span word="astronomical">astronomical</span> <span word="adj">adj</span>. 天文的;天文学的 <span word="pre">pre</span>-<span word="stellar">stellar</span> <span word="adj">adj</span>. 前恒星的 <span word="synthesize">synthesize</span> <span word="v">v</span>.合成，综合 注释： 2. <span word="burning">burning</span> <span word="question">question</span>：最吸引人的问题，亟待解决的问题。 4. <span word="protostar">protostar</span> 原恒星，就是处于原始状态的恒星。原恒星由 大爆炸后产生的星际云演变而来。 练习： <span word="A">A</span> <span word="How">How</span> <span word="matter">matter</span> <span word="began">began</span> <span word="to">to</span> <span word="form">form</span> <span word="the">the</span> <span word="first">first</span> <span word="stars">stars</span> <span word="after">after</span> <span word="the">the</span> <span word="Big">Big</span> <span word="Bang">Bang</span>. <span word="C">C</span> <span word="How">How</span> <span word="the">the</span> <span word="Big">Big</span> <span word="Bang">Bang</span> <span word="took">took</span> <span word="place">place</span> <span word="about">about</span> 13 <span word="billion">billion</span> <span word="years">years</span> <span word="ago">ago</span>. 2. <span word="What">What</span> <span word="does">does</span> <span word="the">the</span> <span word="astronomical">astronomical</span> <span word="object">object</span> <span word="refer">refer</span> <span word="to">to</span>? <span word="C">C</span> <span word="The">The</span> <span word="first">first</span> <span word="star">star</span> <span word="formed">formed</span> <span word="in">in</span> <span word="the">the</span> <span word="universe">universe</span>. <span word="D">D</span> <span word="Dust">Dust</span> <span word="grains">grains</span> <span word="and">and</span> <span word="gases">gases</span>.</p>
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