专业英语四级精选阅读50篇——Waves
<p> <span word="How">How</span> <span word="does">does</span> <span word="light">light</span> <span word="get">get</span> <span word="from">from</span> <span word="the">the</span> <span word="sun">sun</span> <span word="to">to</span> <span word="the">the</span> <span word="earth">earth</span>? <span word="How">How</span> <span word="does">does</span> <span word="music">music</span> <span word="get">get</span> <span word="from">from</span> <span word="the">the</span> <span word="stage">stage</span> <span word="to">to</span> <span word="the">the</span> <span word="audience">audience</span>? <span word="They">They</span> <span word="move">move</span> <span word="the">the</span> <span word="same">same</span> <span word="way">way</span>-----<span word="in">in</span> <span word="waves">waves</span>!</p><p> <span word="Light">Light</span> <span word="and">and</span> <span word="sound">sound</span> <span word="are">are</span> <span word="forms">forms</span> <span word="of">of</span> <span word="energy">energy</span>. <span word="All">All</span> <span word="waves">waves</span> <span word="carry">carry</span> <span word="energy">energy</span>, <span word="but">but</span> <span word="they">they</span> <span word="may">may</span> <span word="carry">carry</span> <span word="it">it</span> <span word="differently">differently</span>. <span word="Light">Light</span> <span word="and">and</span> <span word="sound">sound</span> <span word="travel">travel</span> <span word="through">through</span> <span word="different">different</span> <span word="kinds">kinds</span> <span word="of">of</span> <span word="matter">matter</span>. <span word="For">For</span> <span word="example">example</span>, <span word="light">light</span> <span word="waves">waves</span> <span word="cannot">cannot</span> <span word="move">move</span> <span word="through">through</span> <span word="walls">walls</span>, <span word="but">but</span> <span word="sound">sound</span> <span word="waves">waves</span> <span word="can">can</span>. <span word="That">That</span> <span word="is">is</span> <span word="why">why</span> <span word="you">you</span> <span word="can">can</span> <span word="hear">hear</span> <span word="people">people</span> <span word="talking">talking</span> <span word="in">in</span> <span word="another">another</span> <span word="room">room</span> <span word="even">even</span> <span word="though">though</span> <span word="you">you</span> <span word="cannot">cannot</span> <span word="see">see</span> <span word="them">them</span>. <span word="The">The</span> <span word="energy">energy</span> <span word="of">of</span> <span word="some">some</span> <span word="waves">waves</span> <span word="is">is</span> <span word="destructive">destructive</span>. <span word="An">An</span> <span word="earthquake">earthquake</span> <span word="produces">produces</span> <span word="seismic">seismic</span> <span word="waves">waves</span>.</p><p> <span word="Catch">Catch</span> <span word="a">a</span> <span word="wave">wave</span>. <span word="Ask">Ask</span> <span word="a">a</span> <span word="friend">friend</span> <span word="to">to</span> <span word="stand">stand</span> <span word="a">a</span> <span word="few">few</span> <span word="feet">feet</span> <span word="away">away</span> <span word="from">from</span> <span word="you">you</span>. <span word="Stretch">Stretch</span> <span word="a">a</span> <span word="spring">spring</span> <span word="between">between</span> <span word="you">you</span>. <span word="Shake">Shake</span> <span word="the">the</span> <span word="spring">spring</span> <span word="to">to</span> <span word="transfer">transfer</span> <span word="energy">energy</span> <span word="to">to</span> <span word="it">it</span>. <span word="What">What</span> <span word="happens">happens</span>? <span word="The">The</span> <span word="spring">spring</span> <span word="bounces">bounces</span> <span word="up">up</span> <span word="and">and</span> <span word="down">down</span> <span word="in">in</span> <span word="waves">waves</span>. <span word="When">When</span> <span word="the">the</span> <span word="waves">waves</span> <span word="reach">reach</span> <span word="your">your</span> <span word="friend">friend</span>, <span word="they">they</span> <span word="bounce">bounce</span> <span word="back">back</span> <span word="to">to</span> <span word="you">you</span>!</p><p> <span word="Light">Light</span> <span word="waves">waves</span> <span word="travel">travel</span> 300,000 <span word="kilometers">kilometers</span> <span word="per">per</span> <span word="second">second</span>! <span word="They">They</span> <span word="can">can</span> <span word="also">also</span> <span word="travel">travel</span> <span word="through">through</span> <span word="a">a</span> <span word="vacuum">vacuum</span>. <span word="That">That</span> <span word="is">is</span> <span word="why">why</span> <span word="light">light</span> <span word="from">from</span> <span word="the">the</span> <span word="sun">sun</span> <span word="and">and</span> <span word="distant">distant</span> <span word="stars">stars</span> <span word="can">can</span> <span word="travel">travel</span> <span word="through">through</span> <span word="space">space</span> <span word="to">to</span> <span word="the">the</span> <span word="earth">earth</span>!</p><p> <span word="Useful">Useful</span> <span word="Words">Words</span> <span word="and">and</span> <span word="expressions">expressions</span>;</p><p> 1. <span word="destructive">destructive</span> 破坏的</p><p> 2. <span word="seismic">seismic</span>地震的</p><p> 3. <span word="vacuum">vacuum</span>真空</p><p> </p>
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