2014年职称英语理工类B级阅读理解精华练习(12)
<p> <span word="Listening">Listening</span> <span word="Device">Device</span> <span word="Provides">Provides</span> <span word="Landslide">Landslide</span> <span word="Early">Early</span> <span word="WarningA">WarningA</span> <span word="device">device</span> <span word="that">that</span> <span word="provides">provides</span> <span word="earlywarning">earlywarning</span> <span word="of">of</span> <span word="a">a</span> <span word="landslide">landslide</span> <span word="by">by</span> <span word="monitoring">monitoring</span> <span word="vibrations">vibrations</span> <span word="in">in</span> <span word="soil">soil</span> <span word="is">is</span> <span word="being">being</span> <span word="tested">tested</span> <span word="by">by</span> <span word="UKresearchers">UKresearchers</span>. <span word="The">The</span> <span word="device">device</span> <span word="could">could</span> <span word="save">save</span> <span word="thousands">thousands</span> <span word="of">of</span> <span word="lives">lives</span> <span word="each">each</span> <span word="year">year</span> <span word="by">by</span> <span word="warning">warning</span> <span word="whenan">whenan</span> <span word="area">area</span> <span word="should">should</span> <span word="be">be</span> <span word="evacuated">evacuated</span>, <span word="the">the</span> <span word="scientists">scientists</span> <span word="say">say</span>. <span word="Such">Such</span> <span word="natural">natural</span> <span word="disasters">disasters</span> <span word="arccommon">arccommon</span> <span word="in">in</span> <span word="countries">countries</span> <span word="that">that</span> <span word="experience">experience</span> <span word="sudden">sudden</span>, <span word="heavy">heavy</span> <span word="rainfall">rainfall</span>, <span word="and">and</span> <span word="can">can</span> <span word="also">also</span> <span word="betriggered">betriggered</span> <span word="by">by</span> <span word="earthquakes">earthquakes</span> <span word="and">and</span> <span word="even">even</span> <span word="water">water</span> <span word="erosion">erosion</span>.</p><p> <span word="Landslides">Landslides</span> <span word="start">start</span> <span word="when">when</span> <span word="afew">afew</span> <span word="particles">particles</span> <span word="of">of</span> <span word="soil">soil</span> <span word="or">or</span> <span word="rock">rock</span> <span word="within">within</span> <span word="a">a</span> <span word="slope">slope</span> <span word="start">start</span> <span word="to">to</span> <span word="move">move</span>, <span word="but">but</span> <span word="the">the</span> <span word="early">early</span> <span word="stagescan">stagescan</span> <span word="be">be</span> <span word="hard">hard</span> <span word="to">to</span> <span word="spot">spot</span>. <span word="Following">Following</span> <span word="this">this</span> <span word="initial">initial</span> <span word="movement">movement</span>, <span word="slopes">slopes</span> <span word="can">can</span> <span word="becomeunstable">becomeunstable</span> <span word="in">in</span> <span word="a">a</span> <span word="matter">matter</span> <span word="of">of</span> <span word="hours">hours</span> <span word="or">or</span> <span word="minutes">minutes</span>, <span word="says">says</span> <span word="Nell">Nell</span> <span word="Dixon">Dixon</span> <span word="at">at</span> <span word="SouthboroughUniversity">SouthboroughUniversity</span>1, <span word="UK">UK</span>. <span word="He">He</span> <span word="says">says</span> <span word="a">a</span> <span word="warning">warning</span> <span word="system">system</span> <span word="that">that</span> <span word="monitors">monitors</span> <span word="this">this</span> <span word="movement">movement</span> <span word="might">might</span> <span word="beenough">beenough</span> <span word="to">to</span> <span word="evacuate">evacuate</span> <span word="a">a</span> <span word="block">block</span> <span word="of">of</span> <span word="flats">flats</span> <span word="or">or</span> <span word="clear">clear</span> <span word="a">a</span> <span word="road">road</span>, <span word="and">and</span> <span word="save">save</span> <span word="lives">lives</span>.</p><p> <span word="Themost">Themost</span> <span word="common">common</span> <span word="way">way</span> <span word="to">to</span> <span word="monitor">monitor</span> <span word="a">a</span> <span word="slope">slope</span> <span word="for">for</span> <span word="signs">signs</span> <span word="of">of</span> <span word="an">an</span> <span word="imminent">imminent</span> <span word="landslide">landslide</span> <span word="is">is</span> <span word="towatch">towatch</span> <span word="for">for</span> <span word="changes">changes</span> <span word="in">in</span> <span word="its">its</span> <span word="shape">shape</span>. <span word="Surveyors">Surveyors</span> <span word="can">can</span> <span word="do">do</span> <span word="this">this</span> <span word="by">by</span> <span word="measuring">measuring</span> <span word="asidedirectly">asidedirectly</span>, <span word="or">or</span> <span word="sensors">sensors</span> <span word="sunk">sunk</span> <span word="into">into</span> <span word="boreholes">boreholes</span> <span word="or">or</span> <span word="fixed">fixed</span> <span word="above">above</span> <span word="ground">ground</span> <span word="can">can</span> <span word="be">be</span> <span word="used">used</span> <span word="tomonitor">tomonitor</span> <span word="the">the</span> <span word="shape">shape</span> <span word="of">of</span> <span word="a">a</span> <span word="slope">slope</span>. <span word="Slopes">Slopes</span> <span word="can">can</span>. <span word="however">however</span>, <span word="change">change</span> <span word="shape">shape</span> <span word="withouttriggering">withouttriggering</span> <span word="a">a</span> <span word="landslide">landslide</span>, <span word="so">so</span> <span word="either">either</span> <span word="method">method</span> <span word="is">is</span> <span word="prone">prone</span> <span word="to">to</span> <span word="causing">causing</span> <span word="false">false</span> <span word="alarms">alarms</span>. <span word="NowDixons">NowDixons</span> <span word="team">team</span> <span word="has">has</span> <span word="developed">developed</span> <span word="a">a</span> <span word="device">device</span> <span word="that">that</span> <span word="listens">listens</span> <span word="for">for</span> <span word="the">the</span> <span word="vibrations">vibrations</span> <span word="caused">caused</span> <span word="whenparticles">whenparticles</span> <span word="begin">begin</span> <span word="moving">moving</span> <span word="within">within</span> <span word="a">a</span> <span word="slope">slope</span>.</p><p> <span word="The">The</span> <span word="device">device</span> <span word="takes">takes</span> <span word="the">the</span> <span word="form">form</span> <span word="of">of</span> <span word="a">a</span> <span word="steelpipe">steelpipe</span> <span word="dropped">dropped</span> <span word="into">into</span> <span word="a">a</span> <span word="borehole">borehole</span> <span word="in">in</span> <span word="a">a</span> <span word="slope">slope</span>. <span word="The">The</span> <span word="borehole">borehole</span> <span word="is">is</span> <span word="filled">filled</span> <span word="in">in</span> <span word="with">with</span> <span word="gravelaround">gravelaround</span> <span word="the">the</span> <span word="pipe">pipe</span> <span word="to">to</span> <span word="help">help</span> <span word="transmit">transmit</span> <span word="high">high</span>-<span word="frequency">frequency</span> <span word="vibrations">vibrations</span> <span word="generated">generated</span> <span word="byparticles">byparticles</span> <span word="within">within</span> <span word="the">the</span> <span word="slope">slope</span>. <span word="These">These</span> <span word="vibrations">vibrations</span> <span word="pass">pass</span> <span word="up">up</span> <span word="the">the</span> <span word="tube">tube</span> <span word="and">and</span> <span word="are">are</span> <span word="picked">picked</span> <span word="upby">upby</span> <span word="a">a</span> <span word="sensor">sensor</span> <span word="on">on</span> <span word="the">the</span> <span word="surface">surface</span>. <span word="Software">Software</span> <span word="analyses">analyses</span> <span word="the">the</span> <span word="vibration">vibration</span> <span word="signal">signal</span> <span word="to">to</span> <span word="determinewhether">determinewhether</span> <span word="a">a</span> <span word="landslide">landslide</span> <span word="may">may</span> <span word="be">be</span> <span word="imminent">imminent</span>.</p>
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