职称英语理工类阅读理解原文版练习(9)
<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="Colony">Colony</span> <span word="collapse">collapse</span> <span word="is">is</span> <span word="a">a</span> <span word="serious">serious</span> <span word="concern">concern</span> <span word="because">because</span> <span word="bees">bees</span> <span word="playan">playan</span> <span word="important">important</span> <span word="role">role</span> <span word="in">in</span> <span word="the">the</span> <span word="production">production</span> <span word="of">of</span> <span word="about">about</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="Asthey">Asthey</span> <span word="feed">feed</span>，<span word="honeybees">honeybees</span> <span word="spread">spread</span> <span word="pollen">pollen</span> <span word="from">from</span> <span word="flower">flower</span> <span word="to">to</span> <span word="flower">flower</span>.<span word="Without">Without</span> <span word="this">this</span> <span word="process">process</span>，<span word="aplant">aplant</span> <span word="cant">cant</span> <span word="produce">produce</span> <span word="seedsor">seedsor</span> <span word="fruits">fruits</span>. <span word="Itcould">Itcould</span> <span word="be">be</span> <span word="that">that</span> <span word="disease">disease</span> <span word="is">is</span> <span word="causing">causing</span> <span word="the">the</span> <span word="disappearance">disappearance</span> <span word="of">of</span> <span word="the">the</span> <span word="bees">bees</span>. <span word="To">To</span> <span word="explore">explore</span> <span word="that">that</span> <span word="possibility">possibility</span>，<span word="Jay">Jay</span> <span word="Evans">Evans</span>，<span word="a">a</span> <span word="researcher">researcher</span> <span word="at">at</span> <span word="the">the</span> <span word="United">United</span> <span word="States">States</span> <span word="Department">Department</span> <span word="ofAgriculture">ofAgriculture</span> <span word="Bee">Bee</span> <span word="Research">Research</span> <span word="Laboratory">Laboratory</span>2，<span word="examines">examines</span> <span word="bees">bees</span> <span word="taken">taken</span> <span word="from">from</span> <span word="coloniesthat">coloniesthat</span> <span word="are">are</span> <span word="collapsing">collapsing</span>.<span word="We">We</span> <span word="know">know</span> <span word="what">what</span> <span word="a">a</span> <span word="healthy">healthy</span> <span word="bee">bee</span> <span word="should">should</span> <span word="look">look</span> <span word="like">like</span> <span word="on">on</span> <span word="theinside">theinside</span>，<span word="and">and</span> <span word="we">we</span> <span word="can">can</span> <span word="look">look</span> <span word="for">for</span> <span word="physical">physical</span> <span word="signs">signs</span> <span word="of">of</span> <span word="disease">disease</span>, <span word="he">he</span> <span word="says">says</span>. <span word="And">And</span> <span word="bees">bees</span> <span word="fromcollapsing">fromcollapsing</span> <span word="colonies">colonies</span> <span word="dont">dont</span> <span word="look">look</span> <span word="very">very</span> <span word="healthy">healthy</span>. <span word="Their">Their</span> <span word="stomachs">stomachs</span> <span word="are">are</span> <span word="worndown">worndown</span>，<span word="compared">compared</span> <span word="to">to</span> <span word="the">the</span> <span word="stomachs">stomachs</span> <span word="of">of</span> <span word="healthy">healthy</span> <span word="bees">bees</span>, <span word="Evans">Evans</span> <span word="says">says</span>.<span word="It">It</span> <span word="may">may</span> <span word="be">be</span> <span word="that">that</span> <span word="aparasite">aparasite</span> <span word="is">is</span> <span word="damaging">damaging</span> <span word="the">the</span> <span word="bees">bees</span> <span word="digestive">digestive</span> <span word="organs">organs</span>. <span word="Their">Their</span> <span word="immune">immune</span> <span word="systems">systems</span> <span word="may">may</span> <span word="not">not</span> <span word="be">be</span> <span word="working">working</span> <span word="as">as</span> <span word="they">they</span> <span word="should">should</span>.<span word="Moreover">Moreover</span>，<span word="they">they</span> <span word="have">have</span> <span word="high">high</span> <span word="levels">levels</span> <span word="of">of</span> <span word="bacteria">bacteria</span> <span word="inside">inside</span> <span word="theirbodies">theirbodies</span>. <span word="If">If</span> <span word="itturns">itturns</span> <span word="out">out</span> <span word="that">that</span> <span word="a">a</span> <span word="disease">disease</span> <span word="is">is</span> <span word="contributing">contributing</span> <span word="to">to</span> <span word="colony">colony</span> <span word="collapse">collapse</span>，<span word="bees">bees</span> <span word="genes">genes</span> <span word="couldexplain">couldexplain</span> <span word="why">why</span> <span word="some">some</span> <span word="colonies">colonies</span> <span word="have">have</span> <span word="collapsed">collapsed</span> <span word="and">and</span> <span word="others">others</span> <span word="have">have</span> <span word="not">not</span>.<span word="In">In</span> <span word="any">any</span> <span word="group">group</span> <span word="ofbees">ofbees</span> <span word="there">there</span> <span word="are">are</span> <span word="many">many</span> <span word="different">different</span> <span word="kinds">kinds</span> <span word="of">of</span> <span word="genes">genes</span>.<span word="The">The</span> <span word="more">more</span> <span word="different">different</span> <span word="genes">genes</span> <span word="a">a</span> <span word="grouphas">grouphas</span>，<span word="the">the</span> <span word="higher">higher</span> <span word="the">the</span> <span word="groups">groups</span> <span word="genetic">genetic</span> <span word="diversity">diversity</span>.<span word="So">So</span> <span word="far">far</span> <span word="scientists">scientists</span> <span word="haventdetermined">haventdetermined</span> <span word="the">the</span> <span word="role">role</span> <span word="of">of</span> <span word="genetic">genetic</span> <span word="diversity">diversity</span> <span word="in">in</span> <span word="colony">colony</span> <span word="collapse">collapse</span>，<span word="but">but</span> <span word="its">its</span> <span word="a">a</span> <span word="promisingtheory">promisingtheory</span>，<span word="says">says</span> <span word="Evans">Evans</span>. <span word="colony">colony</span>-<span word="collapse">collapse</span>：群体瘫痪。<span word="colony">colony</span>有殖民地的意思，在此意为：<span word="a">a</span> <span word="groupof">groupof</span> <span word="the">the</span> <span word="same">same</span> <span word="kind">kind</span> <span word="of">of</span> <span word="animals">animals</span>，<span word="plants">plants</span>，<span word="or">or</span> <span word="one">one</span>-<span word="celled">celled</span> <span word="organisms">organisms</span> <span word="living">living</span> <span word="or">or</span> <span word="growingtogether">growingtogether</span>.一群生活或生长在一起的同种动物、植物或单细胞有机体。 <span word="the">the</span> <span word="FloridaDepartment">FloridaDepartment</span> <span word="of">of</span> <span word="Agriculture">Agriculture</span>：佛罗里达农业局。佛罗里达是美国东南部的一个州，濒临大西洋和墨西哥湾。 <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>. <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>. <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>. <span word="A">A</span> 短文第二段的第一句提供了答案。蜜蜂传播花粉能使植物结果，因此为人类提供食物。 <span word="D">D</span> 第六段的句子：<span word="beesgenes">beesgenes</span> <span word="could">could</span> <span word="explain">explain</span> <span word="why">why</span> <span word="some">some</span> <span word="colonies">colonies</span> <span word="have">have</span> <span word="coilapsed">coilapsed</span> <span word="andothcrs">andothcrs</span> <span word="have">have</span> <span word="not">not</span>。这是选择<span word="D">D</span>的依据。选项<span word="A">A</span>、<span word="B">B</span>、<span word="C">C</span>的内容文章中都没有出现，所以不是答案。</p>
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