2015职称英语理工类阅读理解训练题(4)
<p> <span word="Invisibility">Invisibility</span> <span word="Ring">Ring</span></p><p> <span word="Scientists">Scientists</span> <span word="cant">cant</span> <span word="yet">yet</span> <span word="make">make</span> <span word="an">an</span> <span word="invisibility">invisibility</span> <span word="cloak">cloak</span>1 <span word="like">like</span> <span word="the">the</span> <span word="one">one</span> <span word="that">that</span> <span word="Harry">Harry</span> <span word="Potter">Potter</span>2 <span word="uses">uses</span>.<span word="But">But</span>，<span word="for">for</span> <span word="the">the</span> <span word="first">first</span> <span word="time">time</span>，<span word="theyve">theyve</span> <span word="constructed">constructed</span> <span word="a">a</span> <span word="simple">simple</span> <span word="cloaking">cloaking</span> <span word="device">device</span> <span word="that">that</span> <span word="makes">makes</span> <span word="itself">itself</span> <span word="and">and</span> <span word="somethingplaced">somethingplaced</span> <span word="inside">inside</span> <span word="it">it</span> <span word="invisible">invisible</span> <span word="to">to</span> <span word="microwaves">microwaves</span>.</p><p> <span word="Invisibility">Invisibility</span> <span word="isnt">isnt</span> <span word="possible">possible</span> <span word="yet">yet</span> <span word="with">with</span> <span word="waves">waves</span> <span word="of">of</span> <span word="light">light</span> <span word="that">that</span> <span word="the">the</span> <span word="human">human</span> <span word="eye">eye</span> <span word="can">can</span> <span word="see">see</span>.<span word="But">But</span> <span word="it">it</span> <span word="is">is</span> <span word="nowpossible">nowpossible</span> <span word="with">with</span> <span word="microwaves">microwaves</span>.<span word="Like">Like</span> <span word="visible">visible</span> <span word="light">light</span>，<span word="microwaves">microwaves</span> <span word="are">are</span> <span word="a">a</span> <span word="form">form</span> <span word="of">of</span> <span word="radiant">radiant</span> <span word="energy">energy</span>.<span word="Theyare">Theyare</span> <span word="part">part</span> <span word="of">of</span> <span word="the">the</span> <span word="electromagnetic">electromagnetic</span> <span word="spectrum">spectrum</span>，<span word="which">which</span> <span word="also">also</span> <span word="includes">includes</span> <span word="radio">radio</span> <span word="waves">waves</span>，<span word="infrared">infrared</span> <span word="light">light</span>，<span word="ultraviolet">ultraviolet</span> <span word="rays">rays</span>，<span word="X">X</span> <span word="rays">rays</span>，<span word="and">and</span> <span word="gamma">gamma</span> <span word="rays">rays</span>.<span word="The">The</span> <span word="wavelengths">wavelengths</span> <span word="of">of</span> <span word="microwaves">microwaves</span> <span word="are">are</span> <span word="shorter">shorter</span> <span word="thanthose">thanthose</span> <span word="of">of</span> <span word="radio">radio</span> <span word="waves">waves</span> <span word="but">but</span> <span word="longer">longer</span> <span word="than">than</span> <span word="those">those</span> <span word="of">of</span> <span word="visible">visible</span> <span word="light">light</span>.</p><p> <span word="To">To</span> <span word="a">a</span> <span word="detector">detector</span> <span word="set">set</span> <span word="up">up</span> <span word="to">to</span> <span word="receive">receive</span> <span word="microwaves">microwaves</span> <span word="on">on</span> <span word="the">the</span> <span word="other">other</span> <span word="side">side</span> <span word="of">of</span> <span word="the">the</span> <span word="ring">ring</span>，<span word="it">it</span> <span word="looks">looks</span> <span word="as">as</span> <span word="if">if</span> <span word="thewaves">thewaves</span> <span word="never">never</span> <span word="changed">changed</span> <span word="their">their</span> <span word="paths">paths</span> <span word="as">as</span> <span word="if">if</span> <span word="there">there</span> <span word="were">were</span> <span word="no">no</span> <span word="object">object</span> <span word="in">in</span> <span word="the">the</span> <span word="way">way</span>! <span word="So">So</span>，<span word="the">the</span> <span word="ring">ring</span> <span word="is">is</span> <span word="effectively">effectively</span> <span word="invisible">invisible</span>.</p><p> 词汇：</p><p> <span word="cloak">cloak</span>斗篷，披风 <span word="infraredadj">infraredadj</span>.红外线的5<span word="maikrEuweivp">maikrEuweivp</span></p><p> <span word="reconstructv">reconstructv</span>.重建 <span word="gamma">gamma</span> <span word="ray">ray</span> 伽马射线5<span word="reidjEnt">reidjEnt</span>5<span word="weivleNWp">weivleNWp</span></p><p> <span word="electromagneticadj">electromagneticadj</span>.电磁的<span word="coastern">coastern</span>.托盘，垫子</p><p> 1.<span word="Harry">Harry</span> <span word="Potter">Potter</span> <span word="is">is</span> <span word="mentioned">mentioned</span> <span word="in">in</span> <span word="the">the</span> <span word="passage">passage</span>，<span word="because">because</span> <span word="scientists">scientists</span></p><p> <span word="Btry">Btry</span> <span word="to">to</span> <span word="make">make</span> <span word="an">an</span> <span word="invisible">invisible</span> <span word="cloak">cloak</span> <span word="of">of</span> <span word="the">the</span> <span word="same">same</span> <span word="kind">kind</span> <span word="as">as</span> <span word="he">he</span> <span word="uses">uses</span>.</p><p> <span word="Dknow">Dknow</span> <span word="that">that</span> <span word="it">it</span> <span word="is">is</span> <span word="possible">possible</span> <span word="to">to</span> <span word="make">make</span> <span word="an">an</span> <span word="invisible">invisible</span> <span word="cloak">cloak</span> <span word="of">of</span> <span word="the">the</span> <span word="same">same</span> <span word="kind">kind</span>.</p><p> <span word="ATheir">ATheir</span> <span word="wavelengths">wavelengths</span> <span word="are">are</span> <span word="shorter">shorter</span> <span word="than">than</span> <span word="those">those</span> <span word="of">of</span> <span word="visible">visible</span> <span word="light">light</span>.</p>
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