【金版教程】2017高考英语二轮复习训练：1-1-5 篇章结构题a（含解析）
<p> 建议用时：15分钟</p><p> <span word="A">A</span></p><p> <span word="The">The</span> <span word="African">African</span> <span word="elephant">elephant</span>, <span word="the">the</span> <span word="largest">largest</span> <span word="land">land</span> <span word="animal">animal</span> <span word="remaining">remaining</span> <span word="on">on</span> <span word="earth">earth</span>, <span word="is">is</span> <span word="of">of</span> <span word="great">great</span> <span word="importance">importance</span> <span word="to">to</span> <span word="African">African</span> <span word="ecosystem">ecosystem</span> (生态系统). <span word="Unlike">Unlike</span> <span word="other">other</span> <span word="animals">animals</span>, <span word="the">the</span> <span word="African">African</span> <span word="elephant">elephant</span> <span word="is">is</span> <span word="to">to</span> <span word="a">a</span> <span word="great">great</span> <span word="extent">extent</span> <span word="the">the</span> <span word="builder">builder</span> <span word="of">of</span> <span word="its">its</span> <span word="environment">environment</span>. <span word="As">As</span> <span word="a">a</span> <span word="big">big</span> <span word="plant">plant</span><span word="eater">eater</span>, <span word="it">it</span> <span word="largely">largely</span> <span word="shapes">shapes</span> <span word="the">the</span> <span word="forest">forest</span><span word="and">and</span><span word="savanna">savanna</span> (稀树草原) <span word="surroundings">surroundings</span> <span word="in">in</span> <span word="which">which</span> <span word="it">it</span> <span word="lives">lives</span>, <span word="therefore">therefore</span> <span word="setting">setting</span>_<span word="the">the</span>_<span word="terms">terms</span> <span word="of">of</span> <span word="existence">existence</span> <span word="for">for</span> <span word="millions">millions</span> <span word="of">of</span> <span word="other">other</span> <span word="animals">animals</span> <span word="that">that</span> <span word="live">live</span> <span word="in">in</span> <span word="its">its</span> <span word="habitat">habitat</span> (栖息地)．</p><p> <span word="It">It</span> <span word="is">is</span> <span word="the">the</span> <span word="elephant">elephant</span>'<span word="s">s</span> <span word="great">great</span> <span word="desire">desire</span> <span word="for">for</span> <span word="food">food</span> <span word="that">that</span> <span word="makes">makes</span> <span word="it">it</span> <span word="a">a</span> <span word="disturber">disturber</span> <span word="of">of</span> <span word="the">the</span> <span word="environment">environment</span> <span word="and">and</span> <span word="an">an</span> <span word="important">important</span> <span word="builder">builder</span> <span word="of">of</span> <span word="its">its</span> <span word="habitat">habitat</span>. <span word="In">In</span> <span word="its">its</span> <span word="continuous">continuous</span> <span word="search">search</span> <span word="for">for</span> <span word="the">the</span> 300 <span word="pounds">pounds</span> <span word="of">of</span> <span word="plants">plants</span> <span word="it">it</span> <span word="must">must</span> <span word="have">have</span> <span word="every">every</span> <span word="day">day</span>, <span word="it">it</span> <span word="kills">kills</span> <span word="small">small</span> <span word="trees">trees</span> <span word="and">and</span></p><p> <span word="underbushes">underbushes</span>, <span word="and">and</span> <span word="pulls">pulls</span> <span word="branches">branches</span> <span word="off">off</span> <span word="big">big</span> <span word="trees">trees</span>. <span word="This">This</span> <span word="results">results</span> <span word="in">in</span> <span word="numerousopen">numerousopen</span> <span word="spaces">spaces</span> <span word="in">in</span> <span word="both">both</span> <span word="deep">deep</span> <span word="tropical">tropical</span> <span word="forests">forests</span> <span word="and">and</span> <span word="in">in</span> <span word="the">the</span> <span word="woodlands">woodlands</span> <span word="that">that</span> <span word="cover">cover</span> <span word="part">part</span> <span word="of">of</span> <span word="the">the</span> <span word="African">African</span> <span word="savannas">savannas</span>. <span word="In">In</span> <span word="these">these</span> <span word="open">open</span> <span word="spaces">spaces</span> <span word="are">are</span> <span word="numerous">numerous</span> <span word="plants">plants</span> <span word="in">in</span> <span word="various">various</span></p><p> <span word="stages">stages</span> <span word="of">of</span> <span word="growth">growth</span> <span word="that">that</span> <span word="attract">attract</span> <span word="a">a</span> <span word="variety">variety</span> <span word="of">of</span> <span word="other">other</span> <span word="plant">plant</span> <span word="eaters">eaters</span>.</p><p> <span word="Take">Take</span> <span word="the">the</span> <span word="rain">rain</span> <span word="forests">forests</span> <span word="for">for</span> <span word="example">example</span>. <span word="In">In</span> <span word="their">their</span> <span word="natural">natural</span> <span word="state">state</span>, <span word="the">the</span> <span word="spreading">spreading</span> <span word="branches">branches</span> <span word="overhead">overhead</span> <span word="shut">shut</span> <span word="out">out</span> <span word="sunlight">sunlight</span> <span word="and">and</span> <span word="prevent">prevent</span> <span word="the">the</span> <span word="growth">growth</span> <span word="of">of</span> <span word="plants">plants</span> <span word="on">on</span> <span word="the">the</span> <span word="forest">forest</span> <span word="floor">floor</span>. <span word="By">By</span> <span word="pulling">pulling</span> <span word="down">down</span> <span word="trees">trees</span> <span word="and">and</span> <span word="eating">eating</span> <span word="plants">plants</span>, <span word="elephants">elephants</span> <span word="make">make</span> <span word="open">open</span> <span word="spaces">spaces</span>, <span word="allowing">allowing</span> <span word="new">new</span> <span word="plants">plants</span> <span word="to">to</span> <span word="grow">grow</span> <span word="on">on</span> <span word="the">the</span> <span word="forest">forest</span> <span word="floor">floor</span>. <span word="In">In</span> <span word="such">such</span> <span word="situations">situations</span>，<span word="the">the</span> <span word="forests">forests</span> <span word="become">become</span> <span word="suitable">suitable</span> <span word="for">for</span> <span word="large">large</span> <span word="hoofed">hoofed</span> <span word="plant">plant</span> <span word="eaters">eaters</span> <span word="to">to</span> <span word="move">move</span> <span word="around">around</span> <span word="and">and</span> <span word="for">for</span> <span word="small">small</span> <span word="plant">plant</span> <span word="eaters">eaters</span> <span word="to">to</span> <span word="get">get</span> <span word="their">their</span> <span word="food">food</span> <span word="as">as</span> <span word="well">well</span>.</p>
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