职称英语考试理工类阅读理解专项训练(4)
<p> <span word="Where">Where</span> <span word="Have">Have</span> <span word="Allthe">Allthe</span> <span word="Bees">Bees</span> <span word="Gone">Gone</span> <span word="Scientists">Scientists</span> <span word="who">who</span> <span word="study">study</span> <span word="insects">insects</span> <span word="have">have</span> <span word="a">a</span> <span word="real">real</span> <span word="mystery">mystery</span> <span word="on">on</span> <span word="theirhands">theirhands</span>.<span word="All">All</span> <span word="across">across</span> <span word="the">the</span> <span word="country">country</span>，<span word="honeybees">honeybees</span> <span word="are">are</span> <span word="leaving">leaving</span> <span word="their">their</span> <span word="hives">hives</span> <span word="and">and</span> <span word="neverreturning">neverreturning</span>. <span word="Researchers">Researchers</span> <span word="call">call</span> <span word="this">this</span> <span word="phenomenon">phenomenon</span> <span word="colony">colony</span>-<span word="collapse">collapse</span>1 <span word="disorder">disorder</span>.<span word="Accordingto">Accordingto</span> <span word="surveys">surveys</span> <span word="of">of</span> <span word="beekeepers">beekeepers</span> <span word="across">across</span> <span word="the">the</span> <span word="country">country</span>，25 <span word="to">to</span> 40 <span word="percent">percent</span> <span word="of">of</span> <span word="the">the</span> <span word="honeybeesin">honeybeesin</span> <span word="the">the</span> <span word="United">United</span> <span word="States">States</span> <span word="have">have</span> <span word="vanished">vanished</span> <span word="from">from</span> <span word="their">their</span> <span word="hives">hives</span> <span word="since">since</span> <span word="last">last</span> <span word="fall">fall</span>.<span word="So">So</span> <span word="far">far</span>，<span word="noone">noone</span> <span word="can">can</span> <span word="explain">explain</span> <span word="why">why</span>. <span word="Now">Now</span>，<span word="a">a</span> <span word="group">group</span> <span word="of">of</span> <span word="scientists">scientists</span> <span word="andbeekeepers">andbeekeepers</span> <span word="have">have</span> <span word="teamed">teamed</span> <span word="up">up</span> <span word="to">to</span> <span word="try">try</span> <span word="to">to</span> <span word="figure">figure</span> <span word="out">out</span> <span word="whats">whats</span> <span word="causing">causing</span> <span word="the">the</span> <span word="alarmingcollapse">alarmingcollapse</span> <span word="of">of</span> <span word="so">so</span> <span word="many">many</span> <span word="colonies">colonies</span>. <span word="By">By</span> <span word="sharing">sharing</span> <span word="their">their</span> <span word="expertise">expertise</span> <span word="in">in</span> <span word="honeybee">honeybee</span> <span word="behavior">behavior</span>，<span word="health">health</span>，<span word="and">and</span> <span word="nutrition">nutrition</span>，<span word="team">team</span> <span word="members">members</span> <span word="hope">hope</span> <span word="to">to</span> <span word="find">find</span> <span word="out">out</span> <span word="whats">whats</span> <span word="contributingto">contributingto</span> <span word="thedecline">thedecline</span> <span word="and">and</span> <span word="to">to</span> <span word="prevent">prevent</span> <span word="bee">bee</span> <span word="disappearance">disappearance</span> <span word="in">in</span> <span word="the">the</span> <span word="future">future</span>. <span word="Another">Another</span> <span word="cause">cause</span> <span word="of">of</span> <span word="colony">colony</span>-<span word="collapse">collapse</span> <span word="disorder">disorder</span> <span word="may">may</span> <span word="be">be</span> <span word="certain">certain</span> <span word="chemicalsthat">chemicalsthat</span> <span word="farmers">farmers</span> <span word="apply">apply</span> <span word="to">to</span> <span word="kill">kill</span> <span word="unwanted">unwanted</span> <span word="insects">insects</span> <span word="on">on</span> <span word="crops">crops</span>，<span word="says">says</span> <span word="Jerry">Jerry</span> <span word="Hayes">Hayes</span>，<span word="chief">chief</span> <span word="beeinspector">beeinspector</span> <span word="for">for</span> <span word="the">the</span> <span word="Florida">Florida</span> <span word="Department">Department</span> <span word="of">of</span> <span word="Agriculture">Agriculture</span>3.<span word="Some">Some</span> <span word="studies">studies</span>，<span word="hesays">hesays</span>，<span word="suggest">suggest</span> <span word="that">that</span> <span word="a">a</span> <span word="certain">certain</span> <span word="type">type</span> <span word="of">of</span> <span word="insecticide">insecticide</span> <span word="affects">affects</span> <span word="the">the</span> <span word="honeybees">honeybees</span> <span word="nervoussystem">nervoussystem</span> <span word="and">and</span> <span word="memory">memory</span>.<span word="It">It</span> <span word="seems">seems</span> <span word="tike">tike</span> <span word="honeybees">honeybees</span> <span word="are">are</span> <span word="goingout">goingout</span> <span word="and">and</span> <span word="getting">getting</span> <span word="confused">confused</span> <span word="about">about</span> <span word="where">where</span> <span word="to">to</span> <span word="go">go</span> <span word="and">and</span> <span word="what">what</span> <span word="to">to</span> <span word="do">do</span>, <span word="he">he</span> <span word="says">says</span>. 练习： 1. <span word="What">What</span> <span word="is">is</span> <span word="the">the</span> <span word="mystery">mystery</span> <span word="that">that</span> <span word="researchers">researchers</span> <span word="find">find</span> <span word="hard">hard</span> <span word="to">to</span> <span word="explain">explain</span>? <span word="B">B</span> 25-40 <span word="percent">percent</span> <span word="of">of</span> <span word="the">the</span> <span word="honeybees">honeybees</span> <span word="inthe">inthe</span> <span word="US">US</span> <span word="have">have</span> <span word="died">died</span>. <span word="D">D</span> <span word="Honeybee">Honeybee</span> <span word="hives">hives</span> <span word="are">are</span> <span word="in">in</span> <span word="disorder">disorder</span>. <span word="A">A</span> <span word="Because">Because</span> <span word="honeybees">honeybees</span> <span word="produce">produce</span> <span word="one">one</span>-<span word="third">third</span> <span word="of">of</span> <span word="the">the</span> <span word="foods">foods</span> <span word="we">we</span> <span word="eat">eat</span>. <span word="C">C</span> <span word="Because">Because</span> <span word="honeybees">honeybees</span> <span word="eat">eat</span> <span word="seeds">seeds</span> <span word="of">of</span> <span word="flowers">flowers</span>. 3. <span word="What">What</span> <span word="are">are</span> <span word="the">the</span> <span word="possible">possible</span> <span word="causes">causes</span> <span word="of">of</span> <span word="colony">colony</span>-<span word="collapsedisorder">collapsedisorder</span> <span word="given">given</span> <span word="by">by</span> <span word="the">the</span> <span word="scientists">scientists</span>? <span word="B">B</span> <span word="Diseaseand">Diseaseand</span> <span word="chemicals">chemicals</span>. <span word="D">D</span> <span word="Changes">Changes</span> <span word="ingenes">ingenes</span> <span word="structures">structures</span>. <span word="A">A</span> <span word="Bees">Bees</span> <span word="genes">genes</span> <span word="allow">allow</span> <span word="them">them</span> <span word="toexpand">toexpand</span> <span word="their">their</span> <span word="colonies">colonies</span>. <span word="C">C</span> <span word="Beesgenes">Beesgenes</span> <span word="make">make</span> <span word="them">them</span> <span word="fly">fly</span> <span word="from">from</span> <span word="flower">flower</span> <span word="to">to</span> <span word="flower">flower</span>. 5. <span word="What">What</span> <span word="explanation">explanation</span> <span word="is">is</span> <span word="given">given</span> <span word="byJerry">byJerry</span> <span word="Hayes">Hayes</span> <span word="to">to</span> <span word="the">the</span> <span word="phenomenon">phenomenon</span>? <span word="B">B</span> <span word="The">The</span> <span word="insecticide">insecticide</span> <span word="destroys">destroys</span> <span word="the">the</span> <span word="honeybees">honeybees</span> <span word="nervous">nervous</span> <span word="system">system</span>. <span word="D">D</span> <span word="All">All</span> <span word="of">of</span> <span word="theabove">theabove</span>. </p>
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