2016届高三英语二轮复习课时训练：17 阅读理解＋完形填空＋语法填空＋短文改错
<p> 训练17 阅读理解＋完形填空＋语法填空＋短文改错</p><p> (建议用时45分钟)</p><p> .阅读理解</p><p> <span word="Even">Even</span> <span word="if">if</span> <span word="trees">trees</span> <span word="cannot">cannot</span> <span word="walk">walk</span>，<span word="they">they</span> <span word="are">are</span> <span word="still">still</span> <span word="on">on</span> <span word="the">the</span> <span word="move">move</span>.<span word="In">In</span></p><p> <span word="parts">parts</span></p><p> <span word="of">of</span></p><p> <span word="the">the</span></p><p> <span word="Arctic">Arctic</span>，<span word="entire">entire</span></p><p> <span word="forests">forests</span></p><p> <span word="are">are</span></p><p> <span word="moving">moving</span></p><p> <span word="northward">northward</span>.<span word="Across">Across</span> <span word="the">the</span> <span word="Arctic">Arctic</span>，<span word="temperatures">temperatures</span> <span word="are">are</span> <span word="rising">rising</span> <span word="faster">faster</span></p><p> <span word="than">than</span> <span word="anywhere">anywhere</span> <span word="else">else</span> <span word="in">in</span> <span word="the">the</span> <span word="world">world</span>.<span word="As">As</span> <span word="that">that</span> <span word="happens">happens</span>，<span word="the">the</span> <span word="tree">tree</span> <span word="line">line</span></p><p> <span word="that">that</span> <span word="marks">marks</span> <span word="where">where</span> <span word="forests">forests</span> <span word="stop">stop</span> <span word="and">and</span> <span word="the">the</span> <span word="treeless">treeless</span> <span word="tundra">tundra</span> (冻原)</p><p> <span word="starts">starts</span> <span word="has">has</span> <span word="been">been</span> <span word="shifting">shifting</span> <span word="northward">northward</span>.<span word="Trees">Trees</span> <span word="growing">growing</span> <span word="along">along</span> <span word="the">the</span> <span word="tree">tree</span></p><p> <span word="line">line</span> <span word="must">must</span> <span word="protect">protect</span> <span word="themselves">themselves</span> <span word="from">from</span> <span word="the">the</span> <span word="cold">cold</span> <span word="wind">wind</span>.<span word="To">To</span> <span word="do">do</span> <span word="this">this</span>，<span word="plants">plants</span> <span word="tend">tend</span> <span word="to">to</span> <span word="grow">grow</span> <span word="horizontal">horizontal</span> (水平的)<span word="branches">branches</span> <span word="low">low</span> <span word="to">to</span> <span word="the">the</span> <span word="ground">ground</span>.<span word="The">The</span> <span word="energy">energy</span> <span word="it">it</span> <span word="takes">takes</span> <span word="for">for</span> <span word="trees">trees</span> <span word="to">to</span> <span word="grow">grow</span> <span word="this">this</span> <span word="way">way</span> <span word="means">means</span> <span word="they">they</span> <span word="don">don</span>’<span word="t">t</span> <span word="have">have</span> <span word="enough">enough</span> <span word="energy">energy</span> <span word="to">to</span> <span word="make">make</span> <span word="seeds">seeds</span>.</p><p> <span word="But">But</span> <span word="as">as</span> <span word="Earth">Earth</span>’<span word="s">s</span> <span word="climate">climate</span> <span word="has">has</span> <span word="been">been</span> <span word="warming">warming</span>，<span word="trees">trees</span> <span word="no">no</span> <span word="longer">longer</span> <span word="have">have</span> <span word="to">to</span> <span word="just">just</span> <span word="grow">grow</span> <span word="horizontally">horizontally</span>.<span word="Many">Many</span> <span word="can">can</span> <span word="instead">instead</span> <span word="grow">grow</span> <span word="up">up</span> <span word="toward">toward</span> <span word="the">the</span> <span word="sky">sky</span>.<span word="This">This</span> <span word="takes">takes</span> <span word="less">less</span> <span word="energy">energy</span>.<span word="And">And</span> <span word="with">with</span> <span word="all">all</span> <span word="that">that</span> <span word="leftover">leftover</span> <span word="energy">energy</span>，<span word="these">these</span> <span word="trees">trees</span> <span word="have">have</span> <span word="started">started</span> <span word="producing">producing</span> <span word="more">more</span> <span word="seeds">seeds</span>.<span word="This">This</span> <span word="happens">happens</span> <span word="especially">especially</span> <span word="in">in</span> <span word="places">places</span> <span word="where">where</span> <span word="white">white</span> <span word="spruce">spruce</span> (白云杉) <span word="grows">grows</span>.</p><p> <span word="White">White</span> <span word="spruce">spruce</span>，<span word="which">which</span> <span word="is">is</span> <span word="a">a</span> <span word="North">North</span> <span word="American">American</span> <span word="tree">tree</span>，<span word="is">is</span> <span word="quite">quite</span></p><p> <span word="able">able</span> <span word="to">to</span> <span word="produce">produce</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="seeds">seeds</span>，<span word="which">which</span> <span word="can">can</span> <span word="move">move</span> <span word="long">long</span> <span word="distances">distances</span></p><p> <span word="in">in</span> <span word="the">the</span> <span word="wind">wind</span>.<span word="When">When</span> <span word="wind">wind</span><span word="blown">blown</span> <span word="seeds">seeds</span> <span word="end">end</span> <span word="up">up</span> <span word="on">on</span> <span word="the">the</span> <span word="tundra">tundra</span></p>
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