2015年职称英语理工类完形填空一级重点文章(1)
<p> <span word="Seeing">Seeing</span> <span word="red">red</span> <span word="Means">Means</span> <span word="Danger">Danger</span> <span word="Ahead">Ahead</span></p><p> <span word="The">The</span> <span word="color">color</span> <span word="red">red</span> <span word="often">often</span> <span word="means">means</span> <span word="danger">danger</span><span word="and">and</span> <span word="by">by</span> <span word="paying">paying</span> <span word="attention">attention</span>, 1 <span word="can">can</span> <span word="be">be</span> <span word="prevented">prevented</span>. <span word="At">At</span> <span word="railroad">railroad</span> <span word="crossings">crossings</span>, <span word="flashing">flashing</span> <span word="red">red</span> <span word="lights">lights</span> <span word="warn">warn</span> <span word="cars">cars</span> <span word="to">to</span> <span word="stay">stay</span> <span word="back">back</span>. <span word="A">A</span> <span word="red">red</span> <span word="light">light</span> <span word="at">at</span> <span word="a">a</span> <span word="traffic">traffic</span> <span word="intersection">intersection</span> <span word="tells">tells</span> <span word="cars">cars</span> <span word="to">to</span> <span word="stop">stop</span>, <span word="so">so</span> 2 <span word="dont">dont</span> <span word="run">run</span> <span word="into">into</span> <span word="other">other</span> <span word="cars">cars</span>.</p><p> <span word="In">In</span> <span word="the">the</span> <span word="future">future</span>, <span word="the">the</span> <span word="color">color</span> <span word="red">red</span> <span word="also">also</span> <span word="may">may</span> <span word="help">help</span> <span word="prevent">prevent</span> <span word="danger">danger</span> 3 <span word="construction">construction</span> <span word="sites">sites</span>. <span word="Thanks">Thanks</span> <span word="to">to</span> <span word="new">new</span> <span word="work">work</span> <span word="by">by</span> <span word="engineers">engineers</span>, <span word="bridge">bridge</span> <span word="supports">supports</span><span word="or">or</span> <span word="other">other</span> <span word="kinds">kinds</span> <span word="of">of</span> <span word="materials">materials</span><span word="could">could</span> <span word="one">one</span> <span word="day">day</span> <span word="contain">contain</span> <span word="a">a</span> <span word="color">color</span>-<span word="changing">changing</span> <span word="material">material</span>. <span word="It">It</span> <span word="will">will</span> <span word="turn">turn</span> <span word="red">red</span> 4 <span word="a">a</span> <span word="structure">structure</span> <span word="collapses">collapses</span> <span word="or">or</span> <span word="falls">falls</span> 5 . <span word="A">A</span> <span word="tiny">tiny</span> <span word="molecule">molecule</span> <span word="may">may</span> <span word="make">make</span> <span word="a">a</span> <span word="big">big</span> <span word="difference">difference</span> <span word="in">in</span> <span word="future">future</span> <span word="warning">warning</span> <span word="systems">systems</span>.</p><p> <span word="A">A</span> <span word="polymer">polymer</span> 6 <span word="a">a</span> <span word="color">color</span>-<span word="changing">changing</span> <span word="molecule">molecule</span> <span word="called">called</span> <span word="a">a</span> <span word="mechanophore">mechanophore</span> <span word="turns">turns</span> <span word="red">red</span> <span word="seconds">seconds</span> <span word="before">before</span> <span word="it">it</span> <span word="snaps">snaps</span>. <span word="The">The</span> <span word="technology">technology</span> <span word="may">may</span> <span word="one">one</span> <span word="day">day</span> <span word="allow">allow</span> <span word="damage">damage</span> <span word="to">to</span> <span word="materials">materials</span> <span word="or">or</span> <span word="structures">structures</span>4 <span word="to">to</span> <span word="be">be</span> <span word="easily">easily</span> 7 .</p><p> <span word="The">The</span> <span word="secret">secret</span> <span word="behind">behind</span> <span word="the">the</span> <span word="color">color</span>-<span word="changing">changing</span> <span word="material">material</span> <span word="is">is</span> <span word="a">a</span> <span word="particular">particular</span> <span word="type">type</span> <span word="of">of</span> <span word="molecule">molecule</span>. <span word="A">A</span> <span word="molecule">molecule</span> <span word="is">is</span> <span word="a">a</span> <span word="group">group</span> <span word="of">of</span> <span word="atoms">atoms</span> <span word="held">held</span> <span word="together">together</span> <span word="by">by</span> 8 <span word="bonds">bonds</span>. <span word="Molecules">Molecules</span> <span word="come">come</span> <span word="in">in</span> <span word="all">all</span> <span word="shapes">shapes</span> <span word="and">and</span> <span word="sizes">sizes</span>, <span word="and">and</span> <span word="make">make</span> <span word="up">up</span> 9 <span word="you">you</span> <span word="can">can</span> <span word="see">see</span>, <span word="touch">touch</span> <span word="or">or</span> <span word="feel">feel</span>. <span word="How">How</span> <span word="a">a</span> <span word="molecule">molecule</span> <span word="behaves">behaves</span> <span word="depends">depends</span> <span word="on">on</span> <span word="what">what</span> <span word="kinds">kinds</span> <span word="of">of</span> <span word="atoms">atoms</span> <span word="it">it</span> <span word="contains">contains</span>, <span word="and">and</span> <span word="how">how</span> <span word="theyre">theyre</span> <span word="held">held</span> <span word="together">together</span>.</p><p> <span word="When">When</span> <span word="a">a</span> <span word="polymer">polymer</span> <span word="containing">containing</span> <span word="a">a</span> <span word="color">color</span>-<span word="changing">changing</span> <span word="molecule">molecule</span> <span word="called">called</span> <span word="a">a</span> <span word="mechanophore">mechanophore</span> <span word="is">is</span> <span word="about">about</span> <span word="to">to</span> <span word="breaks">breaks</span>, <span word="it">it</span> <span word="produces">produces</span> <span word="a">a</span> <span word="color">color</span>. <span word="When">When</span> <span word="a">a</span> <span word="polymer">polymer</span> <span word="with">with</span> <span word="mechanophore">mechanophore</span> <span word="molecules">molecules</span> <span word="becomes">becomes</span> <span word="injured">injured</span> <span word="or">or</span> 10 , <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="mechanophore">mechanophore</span> <span word="bonds">bonds</span> <span word="breaks">breaks</span> <span word="and">and</span> <span word="the">the</span> <span word="material">material</span> <span word="turns">turns</span> <span word="red">red</span>. <span word="Its">Its</span> <span word="a">a</span> <span word="really">really</span> <span word="simple">simple</span> <span word="detection">detection</span> <span word="method">method</span>, <span word="says">says</span> <span word="Nancy">Nancy</span> <span word="Sottos">Sottos</span>, <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="scientists">scientists</span> <span word="who">who</span> <span word="worked">worked</span> <span word="on">on</span> <span word="the">the</span> <span word="project">project</span>. <span word="Were">Were</span> 11 <span word="up">up</span> <span word="this">this</span> <span word="one">one</span> <span word="bond">bond</span>, <span word="and">and</span> <span word="it">it</span> <span word="changes">changes</span> <span word="color">color</span>.<span word="Sottos">Sottos</span> <span word="and">and</span> <span word="her">her</span> <span word="team">team</span> <span word="tested">tested</span> <span word="the">the</span> <span word="color">color</span>-<span word="changing">changing</span> <span word="polymers">polymers</span> <span word="in">in</span> <span word="their">their</span> <span word="lab">lab</span>. <span word="The">The</span> <span word="test">test</span> 12 <span word="proved">proved</span> <span word="encouraging">encouraging</span>.</p>
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