2014年职称英语理工类C级阅读理解精华练习(8)
<p> <span word="Light">Light</span> <span word="Night">Night</span>, <span word="Dark">Dark</span> <span word="StarsThousands">StarsThousands</span> <span word="of">of</span> <span word="people">people</span> <span word="around">around</span> <span word="the">the</span> <span word="globe">globe</span> <span word="step">step</span> <span word="outside">outside</span> <span word="to">to</span> <span word="gaze">gaze</span> <span word="at">at</span> <span word="their">their</span> <span word="night">night</span> <span word="sky">sky</span>. <span word="On">On</span> <span word="a">a</span> <span word="clear">clear</span> <span word="night">night</span>, <span word="with">with</span> <span word="no">no</span> <span word="clouds">clouds</span>, <span word="moonlight">moonlight</span>, <span word="or">or</span> <span word="artificial">artificial</span> <span word="lights">lights</span> <span word="to">to</span> <span word="block">block</span> <span word="the">the</span> <span word="view">view</span>, <span word="people">people</span> <span word="can">can</span> <span word="see">see</span> <span word="more">more</span> <span word="than">than</span> 14,000 <span word="stars">stars</span> <span word="in">in</span> <span word="the">the</span> <span word="sky">sky</span>,<span word="says">says</span> <span word="Dennis">Dennis</span> <span word="Ward">Ward</span>, <span word="an">an</span> <span word="astronomer">astronomer</span> <span word="with">with</span> <span word="the">the</span> <span word="University">University</span> <span word="Corporation">Corporation</span> <span word="for">for</span> <span word="Atmospheric">Atmospheric</span> <span word="Research">Research</span> <span word="in">in</span> <span word="Boulder">Boulder</span>,<span word="Colo">Colo</span>. <span word="But">But</span> <span word="when">when</span> <span word="people">people</span> <span word="are">are</span> <span word="surrounded">surrounded</span> <span word="by">by</span> <span word="city">city</span> <span word="lights">lights</span>, <span word="he">he</span> <span word="says">says</span>, <span word="theyre">theyre</span> <span word="lucky">lucky</span> <span word="to">to</span> <span word="see">see</span> 150 <span word="stars">stars</span>.</p><p> <span word="If">If</span> <span word="youve">youve</span> <span word="ever">ever</span> <span word="driven">driven</span> <span word="toward">toward</span> <span word="a">a</span> <span word="big">big</span> <span word="city">city</span> <span word="at">at</span> <span word="night">night</span> <span word="and">and</span> <span word="seen">seen</span> <span word="its">its</span> <span word="glow">glow</span> <span word="from">from</span> <span word="a">a</span> <span word="great">great</span> <span word="distance">distance</span>, <span word="youve">youve</span> <span word="witnessed">witnessed</span> <span word="light">light</span> <span word="pollution">pollution</span>. <span word="It">It</span> <span word="occurs">occurs</span> <span word="when">when</span> <span word="light">light</span> <span word="from">from</span> <span word="streetlights">streetlights</span>, <span word="office">office</span> <span word="buildings">buildings</span>, <span word="signs">signs</span>, <span word="and">and</span> <span word="other">other</span> <span word="sources">sources</span> <span word="streams">streams</span> <span word="into">into</span> <span word="space">space</span> <span word="and">and</span> <span word="illuminates">illuminates</span> <span word="the">the</span> <span word="night">night</span> <span word="sky">sky</span>. <span word="This">This</span> <span word="haze">haze</span> <span word="of">of</span> <span word="light">light</span> <span word="makes">makes</span> <span word="many">many</span> <span word="stars">stars</span> <span word="invisible">invisible</span> <span word="to">to</span> <span word="people">people</span> <span word="on">on</span> <span word="Earth">Earth</span>. <span word="Even">Even</span> <span word="at">at</span> <span word="night">night</span>, <span word="big">big</span> <span word="cities">cities</span> <span word="like">like</span> <span word="New">New</span> <span word="York">York</span> <span word="glow">glow</span> <span word="from">from</span> <span word="light">light</span> <span word="pollution">pollution</span>, <span word="making">making</span> <span word="stargazing">stargazing</span> <span word="difficult">difficult</span>.</p><p> <span word="Dust">Dust</span> <span word="and">and</span> <span word="particles">particles</span> <span word="of">of</span> <span word="pollution">pollution</span> <span word="from">from</span> <span word="factories">factories</span> <span word="and">and</span> <span word="industries">industries</span> <span word="worsen">worsen</span> <span word="the">the</span> <span word="effects">effects</span> <span word="of">of</span> <span word="light">light</span> <span word="pollution">pollution</span>. <span word="If">If</span> <span word="one">one</span> <span word="city">city</span> <span word="has">has</span> <span word="a">a</span> <span word="lot">lot</span> <span word="more">more</span> <span word="light">light</span> <span word="pollution">pollution</span> <span word="than">than</span> <span word="another">another</span>, <span word="Ward">Ward</span> <span word="says">says</span>, <span word="that">that</span> <span word="city">city</span> <span word="will">will</span> <span word="suffer">suffer</span> <span word="the">the</span> <span word="effects">effects</span> <span word="of">of</span> <span word="light">light</span> <span word="pollution">pollution</span> <span word="on">on</span> <span word="a">a</span> <span word="much">much</span> <span word="greater">greater</span> <span word="scale">scale</span>.</p><p> <span word="Hazy">Hazy</span> <span word="skies">skies</span> <span word="also">also</span> <span word="make">make</span> <span word="it">it</span> <span word="far">far</span> <span word="more">more</span> <span word="difficult">difficult</span> <span word="for">for</span> <span word="astronomers">astronomers</span> <span word="to">to</span> <span word="do">do</span> <span word="their">their</span> <span word="jobs">jobs</span>.</p><p> <span word="Cities">Cities</span> <span word="are">are</span> <span word="getting">getting</span> <span word="larger">larger</span>. <span word="Suburbs">Suburbs</span> <span word="are">are</span> <span word="growing">growing</span> <span word="in">in</span> <span word="once">once</span> <span word="dark">dark</span>, <span word="rural">rural</span> <span word="areas">areas</span>. <span word="Light">Light</span> <span word="from">from</span> <span word="all">all</span> <span word="this">this</span> <span word="new">new</span> <span word="development">development</span> <span word="is">is</span> <span word="increasingly">increasingly</span> <span word="obscuring">obscuring</span> <span word="the">the</span> <span word="faint">faint</span> <span word="light">light</span> <span word="given">given</span> <span word="off">off</span> <span word="by">by</span> <span word="distant">distant</span> <span word="stars">stars</span>. <span word="And">And</span> <span word="if">if</span> <span word="scientists">scientists</span> <span word="cant">cant</span> <span word="locate">locate</span> <span word="these">these</span> <span word="objects">objects</span>, <span word="they">they</span> <span word="cant">cant</span> <span word="learn">learn</span> <span word="more">more</span> <span word="about">about</span> <span word="them">them</span>.</p>
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