gre考试阅读真题解析(B)
<p> <span word="Typically">Typically</span> <span word="the">the</span> <span word="queen">queen</span> <span word="honeybee">honeybee</span> <span word="is">is</span> <span word="mother">mother</span> <span word="to">to</span> <span word="all">all</span> <span word="the">the</span> <span word="bees">bees</span> <span word="in">in</span> <span word="a">a</span> <span word="hive">hive</span>; <span word="after">after</span> <span word="mating">mating</span> <span word="with">with</span> <span word="several">several</span> <span word="male">male</span> <span word="drones">drones</span> <span word="from">from</span> <span word="other">other</span> <span word="colonies">colonies</span>, <span word="she">she</span> <span word="lays">lays</span> <span word="fertilized">fertilized</span> <span word="eggs">eggs</span> <span word="that">that</span> <span word="develop">develop</span> <span word="into">into</span> <span word="all">all</span>-<span word="female">female</span> <span word="worker">worker</span> <span word="bees">bees</span> <span word="and">and</span> <span word="lays">lays</span> <span word="unfertilized">unfertilized</span> <span word="eggs">eggs</span> <span word="that">that</span> <span word="become">become</span> <span word="all">all</span>-<span word="male">male</span> <span word="drones">drones</span>. <span word="When">When</span> <span word="a">a</span> <span word="queen">queen</span> <span word="dies">dies</span>, <span word="workers">workers</span> <span word="often">often</span> <span word="lay">lay</span> <span word="unfertilized">unfertilized</span> <span word="eggs">eggs</span> <span word="that">that</span> <span word="hatch">hatch</span> <span word="into">into</span> <span word="drones">drones</span>. <span word="Yet">Yet</span> <span word="workers">workers</span> <span word="rarely">rarely</span> <span word="reproduce">reproduce</span> <span word="while">while</span> <span word="a">a</span> <span word="queen">queen</span> <span word="reigns">reigns</span>.</p><p> <span word="According">According</span> <span word="to">to</span> <span word="natural">natural</span> <span word="selection">selection</span> <span word="theory">theory</span>, <span word="a">a</span> <span word="worker">worker</span> <span word="would">would</span> <span word="enhance">enhance</span> <span word="her">her</span> <span word="fitnessor">fitnessor</span> <span word="ability">ability</span> <span word="to">to</span> <span word="propagate">propagate</span> <span word="her">her</span> <span word="genesby">genesby</span> <span word="hatching">hatching</span> <span word="her">her</span> <span word="own">own</span> <span word="eggs">eggs</span> <span word="in">in</span> <span word="addition">addition</span> <span word="to">to</span> <span word="or">or</span> <span word="in">in</span> <span word="place">place</span> <span word="of">of</span> <span word="the">the</span> <span word="queens">queens</span>. <span word="But">But</span> <span word="a">a</span> <span word="typical">typical</span> <span word="workers">workers</span> <span word="fitness">fitness</span> <span word="would">would</span> <span word="be">be</span> <span word="diminished">diminished</span> <span word="if">if</span> <span word="other">other</span> <span word="workers">workers</span> <span word="sons">sons</span>, <span word="who">who</span> <span word="have">have</span> <span word="less">less</span> <span word="genetic">genetic</span> <span word="material">material</span> <span word="in">in</span> <span word="common">common</span> <span word="with">with</span> <span word="the">the</span> <span word="worker">worker</span>, <span word="supplanted">supplanted</span> <span word="the">the</span> <span word="queens">queens</span> <span word="sons">sons</span> . <span word="Researchers">Researchers</span>, <span word="testing">testing</span> <span word="the">the</span> <span word="hypothesis">hypothesis</span> <span word="that">that</span> <span word="workers">workers</span> <span word="usually">usually</span> <span word="somehow">somehow</span> <span word="block">block</span> <span word="each">each</span> <span word="others">others</span> <span word="attempts">attempts</span> <span word="to">to</span> <span word="reproduce">reproduce</span>, <span word="put">put</span> <span word="unfertilized">unfertilized</span> <span word="eggs">eggs</span> <span word="laid">laid</span> <span word="by">by</span> <span word="workers">workers</span> <span word="and">and</span> <span word="by">by</span> <span word="the">the</span> <span word="queen">queen</span> <span word="into">into</span> <span word="a">a</span> <span word="hive">hive</span>. <span word="Other">Other</span> <span word="workers">workers</span> <span word="quickly">quickly</span> <span word="devoured">devoured</span> <span word="the">the</span> <span word="workers">workers</span> <span word="eggs">eggs</span> <span word="while">while</span> <span word="leaving">leaving</span> <span word="the">the</span> <span word="queens">queens</span> <span word="eggs">eggs</span> <span word="alone">alone</span>.</p><p> 17. <span word="The">The</span> <span word="author">author</span> <span word="refers">refers</span> <span word="to">to</span> <span word="the">the</span> <span word="experiment">experiment</span> <span word="described">described</span> <span word="in">in</span> <span word="lines">lines</span> 16-19 <span word="in">in</span> <span word="order">order</span> <span word="to">to</span></p><p> <span word="explain">explain</span> <span word="how">how</span> <span word="worker">worker</span> <span word="bees">bees</span> <span word="are">are</span> <span word="prevented">prevented</span> <span word="from">from</span> <span word="mating">mating</span> <span word="with">with</span> <span word="drones">drones</span></p><p> <span word="explain">explain</span> <span word="how">how</span> <span word="worker">worker</span> <span word="bees">bees</span> <span word="hatch">hatch</span> <span word="and">and</span> <span word="nurture">nurture</span> <span word="the">the</span> <span word="queens">queens</span> <span word="young">young</span></p><p> <span word="demonstrate">demonstrate</span> <span word="the">the</span> <span word="universality">universality</span> <span word="of">of</span> <span word="natural">natural</span> <span word="selection">selection</span></p><p> <span word="show">show</span> <span word="that">that</span> <span word="worker">worker</span> <span word="bees">bees</span> <span word="are">are</span> <span word="capable">capable</span> <span word="of">of</span> <span word="thwarting">thwarting</span> <span word="each">each</span> <span word="others">others</span> <span word="attempts">attempts</span> <span word="to">to</span> <span word="reproduce">reproduce</span></p><p> <span word="provide">provide</span> <span word="a">a</span> <span word="model">model</span> <span word="of">of</span> <span word="daily">daily</span> <span word="life">life</span> <span word="in">in</span> <span word="a">a</span> <span word="typical">typical</span> <span word="honeybee">honeybee</span> <span word="hive">hive</span></p>
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