2017届高考英语一轮复习课时作业21 Unit 1（人教版必修5）
<p> 温馨提示：</p><p> 此套题为<span word="Word">Word</span>版，请按住<span word="Ctrl">Ctrl</span>,滑动鼠标滚轴，调节合适的观看比例，答案解析附后。关闭<span word="Word">Word</span>文档返回原板块。</p><p> 课时提升作业(二十一)</p><p> 必修5 <span word="Unit">Unit</span> 1</p><p> Ⅰ. 阅读理解</p><p> <span word="Linus">Linus</span> <span word="Pauling">Pauling</span>, <span word="the">the</span> <span word="only">only</span> <span word="person">person</span> <span word="who">who</span> <span word="has">has</span> <span word="won">won</span> <span word="two">two</span> <span word="undivided">undivided</span> <span word="Nobel">Nobel</span> <span word="Prizes">Prizes</span>, <span word="was">was</span> <span word="born">born</span> <span word="in">in</span> <span word="Portland">Portland</span>, <span word="Oregon">Oregon</span>. <span word="He">He</span> <span word="attended">attended</span> <span word="Washington">Washington</span> <span word="High">High</span> <span word="School">School</span> <span word="but">but</span> <span word="because">because</span> <span word="of">of</span> <span word="an">an</span> <span word="unimportant">unimportant</span> <span word="detail">detail</span> <span word="he">he</span> <span word="did">did</span> <span word="not">not</span> <span word="receive">receive</span> <span word="his">his</span> <span word="diploma">diploma</span> <span word="until">until</span> 1962, <span word="long">long</span> <span word="after">after</span> <span word="he">he</span> <span word="had">had</span> <span word="received">received</span> <span word="his">his</span> <span word="Bachelor">Bachelor</span>’<span word="s">s</span> <span word="degree">degree</span> <span word="in">in</span> <span word="chemical">chemical</span> <span word="engineering">engineering</span> <span word="from">from</span> <span word="Oregon">Oregon</span> <span word="State">State</span> <span word="College">College</span> <span word="in">in</span> 1922. <span word="He">He</span> <span word="had">had</span> <span word="chosen">chosen</span> <span word="to">to</span> <span word="study">study</span> <span word="his">his</span> <span word="major">major</span> <span word="because">because</span> <span word="he">he</span> <span word="could">could</span> <span word="get">get</span> <span word="a">a</span> <span word="good">good</span> <span word="job">job</span> <span word="with">with</span> <span word="it">it</span>.</p><p> <span word="He">He</span> <span word="won">won</span> <span word="the">the</span> <span word="Nobel">Nobel</span> <span word="Prize">Prize</span> <span word="for">for</span> <span word="Chemistry">Chemistry</span> <span word="in">in</span> 1954 <span word="for">for</span> <span word="his">his</span> <span word="research">research</span> <span word="into">into</span> <span word="the">the</span> <span word="nature">nature</span> <span word="of">of</span> <span word="the">the</span> <span word="chemical">chemical</span> <span word="bond">bond</span> <span word="and">and</span> <span word="its">its</span> <span word="application">application</span> <span word="to">to</span> <span word="the">the</span> <span word="explanation">explanation</span> <span word="of">of</span> <span word="the">the</span> <span word="structure">structure</span> <span word="of">of</span> <span word="complex">complex</span> <span word="substances">substances</span>. <span word="His">His</span> <span word="interest">interest</span> <span word="in">in</span> <span word="the">the</span>“<span word="behavior">behavior</span>”<span word="of">of</span> <span word="molecules">molecules</span>(分子)<span word="led">led</span> <span word="him">him</span> <span word="from">from</span> <span word="physical">physical</span> <span word="chemistry">chemistry</span> <span word="to">to</span> <span word="biological">biological</span> <span word="chemistry">chemistry</span>, <span word="especially">especially</span> <span word="of">of</span> <span word="the">the</span> <span word="human">human</span> <span word="body">body</span>. <span word="He">He</span> <span word="began">began</span> <span word="with">with</span> <span word="proteins">proteins</span> <span word="and">and</span> <span word="their">their</span> <span word="main">main</span> <span word="parts">parts</span>, <span word="the">the</span> <span word="amino">amino</span> <span word="acids">acids</span>(氨基酸), <span word="which">which</span> <span word="are">are</span> <span word="called">called</span> <span word="the">the</span>“<span word="building">building</span> <span word="blocks">blocks</span> <span word="of">of</span> <span word="life">life</span>”. <span word="In">In</span> 1950, <span word="he">he</span> <span word="constructed">constructed</span> <span word="the">the</span> <span word="first">first</span> <span word="satisfactory">satisfactory</span> <span word="model">model</span> <span word="of">of</span> <span word="a">a</span> <span word="protein">protein</span> <span word="molecule">molecule</span>, <span word="a">a</span> <span word="discovery">discovery</span> <span word="very">very</span> <span word="important">important</span> <span word="to">to</span> <span word="the">the</span> <span word="understanding">understanding</span> <span word="of">of</span> <span word="the">the</span> <span word="living">living</span> <span word="cell">cell</span>.</p><p> <span word="During">During</span> <span word="World">World</span> <span word="War">War</span>Ⅱ, <span word="Pauling">Pauling</span> <span word="was">was</span> <span word="a">a</span> <span word="member">member</span> <span word="of">of</span> <span word="the">the</span> <span word="Research">Research</span> <span word="Board">Board</span> <span word="for">for</span> <span word="National">National</span> <span word="Security">Security</span>, <span word="for">for</span> <span word="which">which</span> <span word="he">he</span> <span word="was">was</span> <span word="awarded">awarded</span> <span word="the">the</span> <span word="Presidential">Presidential</span> <span word="Medal">Medal</span> <span word="of">of</span> <span word="Merit">Merit</span> <span word="in">in</span> 1948. <span word="However">However</span>, <span word="the">the</span> <span word="use">use</span> <span word="of">of</span> <span word="the">the</span> <span word="atomic">atomic</span> <span word="bomb">bomb</span> <span word="near">near</span> <span word="the">the</span> <span word="end">end</span> <span word="of">of</span> <span word="the">the</span> <span word="war">war</span> <span word="turned">turned</span> <span word="Pauling">Pauling</span> <span word="in">in</span> <span word="a">a</span> <span word="new">new</span> <span word="direction">direction</span>. <span word="Having">Having</span> <span word="long">long</span> <span word="worked">worked</span> <span word="on">on</span> <span word="the">the</span> <span word="structure">structure</span> <span word="of">of</span> <span word="molecules">molecules</span>, <span word="he">he</span> <span word="took">took</span> <span word="an">an</span> <span word="immediate">immediate</span> <span word="interest">interest</span> <span word="in">in</span> <span word="the">the</span> <span word="deadly">deadly</span> <span word="effects">effects</span> <span word="of">of</span> <span word="nuclear">nuclear</span> <span word="fallout">fallout</span> <span word="on">on</span> <span word="human">human</span> <span word="molecular">molecular</span> <span word="structures">structures</span>.</p>
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