2016届高考英语二轮阅读理解和短文改错选练（6）（新人教版）
<p> 2016高考英语阅读理解和短文改错选练（6）</p><p> 阅读下列短文，从每题所给的<span word="A">A</span>、<span word="B">B</span>、<span word="C">C</span>、<span word="D">D</span>四个选项中，选出最佳选项。</p><p> <span word="Have">Have</span> <span word="you">you</span> <span word="ever">ever</span> <span word="looked">looked</span> <span word="toward">toward</span> <span word="the">the</span> <span word="sky">sky</span> <span word="on">on</span> <span word="a">a</span> <span word="fall">fall</span> <span word="day">day</span> <span word="and">and</span> <span word="witnessed">witnessed</span> <span word="a">a</span> <span word="group">group</span> <span word="of">of</span> <span word="migrating">migrating</span> <span word="birds">birds</span>? <span word="If">If</span> <span word="so">so</span>, <span word="you">you</span> <span word="probably">probably</span> <span word="noted">noted</span> <span word="the">the</span> <span word="V">V</span>-<span word="shaped">shaped</span> <span word="formation">formation</span> <span word="of">of</span> <span word="the">the</span> <span word="birds">birds</span> <span word="or">or</span> <span word="the">the</span> <span word="birds">birds</span> <span word="flying">flying</span> <span word="in">in</span> <span word="a">a</span> <span word="ball">ball</span>-<span word="like">like</span> <span word="formation">formation</span>. <span word="Why">Why</span> <span word="do">do</span> <span word="birds">birds</span> <span word="fly">fly</span> <span word="this">this</span> <span word="way">way</span>? <span word="Many">Many</span> <span word="theories">theories</span> <span word="have">have</span> <span word="been">been</span> <span word="developed">developed</span> <span word="to">to</span> <span word="explain">explain</span> <span word="the">the</span> <span word="formation">formation</span> <span word="patterns">patterns</span> <span word="of">of</span> <span word="different">different</span> <span word="types">types</span> <span word="of">of</span> <span word="birds">birds</span>.</p><p> <span word="One">One</span> <span word="theory">theory</span> <span word="is">is</span> <span word="that">that</span> <span word="birds">birds</span> <span word="fly">fly</span> <span word="in">in</span> <span word="certain">certain</span> <span word="formations">formations</span> <span word="to">to</span> <span word="take">take</span> <span word="advantage">advantage</span> <span word="of">of</span> <span word="the">the</span> <span word="laws">laws</span> <span word="of">of</span> <span word="nature">nature</span>. <span word="The">The</span> <span word="birds">birds</span> <span word="know">know</span> <span word="that">that</span> <span word="flying">flying</span> <span word="in">in</span> <span word="a">a</span> <span word="V">V</span>-<span word="shaped">shaped</span> <span word="pattern">pattern</span> <span word="will">will</span> <span word="save">save</span> <span word="energy">energy</span>. <span word="Like">Like</span> <span word="the">the</span> <span word="lead">lead</span> <span word="cyclist">cyclist</span> <span word="in">in</span> <span word="a">a</span> <span word="race">race</span> <span word="who">who</span> <span word="decreases">decreases</span> <span word="wind">wind</span> <span word="force">force</span> <span word="for">for</span> <span word="the">the</span> <span word="cyclists">cyclists</span> <span word="who">who</span> <span word="follow">follow</span>, <span word="the">the</span> <span word="lead">lead</span> <span word="bird">bird</span> <span word="cuts">cuts</span> <span word="wind">wind</span> <span word="force">force</span> <span word="for">for</span> <span word="the">the</span> <span word="birds">birds</span> <span word="that">that</span> <span word="follow">follow</span>. <span word="This">This</span> <span word="decrease">decrease</span> <span word="in">in</span> <span word="wind">wind</span> <span word="force">force</span> <span word="means">means</span> <span word="that">that</span> <span word="the">the</span> <span word="birds">birds</span> <span word="use">use</span> <span word="up">up</span> <span word="to">to</span> 70 <span word="percent">percent</span> <span word="less">less</span> <span word="energy">energy</span> <span word="during">during</span> <span word="their">their</span> <span word="flight">flight</span>. <span word="When">When</span> <span word="the">the</span> <span word="lead">lead</span> <span word="bird">bird</span> <span word="becomes">becomes</span> <span word="tired">tired</span>, <span word="a">a</span> <span word="more">more</span> <span word="rested">rested</span> <span word="bird">bird</span> <span word="takes">takes</span> <span word="over">over</span> <span word="that">that</span> <span word="position">position</span>.</p><p> <span word="But">But</span> <span word="saving">saving</span> <span word="energy">energy</span> <span word="is">is</span> <span word="important">important</span> <span word="for">for</span> <span word="more">more</span> <span word="than">than</span> <span word="one">one</span> <span word="reason">reason</span>. <span word="Sometimes">Sometimes</span> <span word="food">food</span> <span word="is">is</span> <span word="short">short</span> <span word="during">during</span> <span word="migration">migration</span> <span word="flights">flights</span>. <span word="Keeping">Keeping</span> <span word="energy">energy</span> <span word="enables">enables</span> <span word="the">the</span> <span word="birds">birds</span> <span word="to">to</span> <span word="fly">fly</span> <span word="longer">longer</span> <span word="distances">distances</span> <span word="between">between</span> <span word="meals">meals</span>.</p><p> <span word="When">When</span> <span word="food">food</span> <span word="is">is</span> <span word="sighted">sighted</span>, <span word="the">the</span> <span word="birds">birds</span> <span word="guide">guide</span> <span word="one">one</span> <span word="another">another</span> <span word="in">in</span> <span word="a">a</span> <span word="different">different</span> <span word="way">way</span>. <span word="When">When</span> <span word="a">a</span> <span word="bird">bird</span> <span word="identifies">identifies</span> <span word="a">a</span> <span word="familiar">familiar</span> <span word="feeding">feeding</span> <span word="area">area</span>, <span word="it">it</span> <span word="might">might</span> <span word="turn">turn</span> <span word="around">around</span> <span word="in">in</span> <span word="order">order</span> <span word="to">to</span> <span word="signal">signal</span> <span word="the">the</span> <span word="group">group</span> <span word="to">to</span> <span word="change">change</span> <span word="direction">direction</span>. <span word="Then">Then</span>, <span word="this">this</span> <span word="bird">bird</span> <span word="becomes">becomes</span> <span word="the">the</span> <span word="new">new</span> <span word="leader">leader</span>. <span word="It">It</span> <span word="helps">helps</span> <span word="guarantee">guarantee</span> <span word="that">that</span> <span word="other">other</span> <span word="birds">birds</span> <span word="will">will</span> <span word="know">know</span> <span word="exactly">exactly</span> <span word="where">where</span> <span word="it">it</span> <span word="is">is</span> <span word="going">going</span>. <span word="Then">Then</span> <span word="the">the</span> <span word="whole">whole</span> <span word="group">group</span> <span word="makes">makes</span> <span word="a">a</span> <span word="change">change</span> <span word="in">in</span> <span word="direction">direction</span>, <span word="gently">gently</span> <span word="streaming">streaming</span> <span word="from">from</span> <span word="the">the</span> <span word="sky">sky</span> <span word="down">down</span> <span word="to">to</span> <span word="the">the</span> <span word="ground">ground</span>. <span word="This">This</span> <span word="formation">formation</span> <span word="is">is</span> <span word="like">like</span> <span word="an">an</span> <span word="arrow">arrow</span> <span word="pointing">pointing</span> <span word="to">to</span> <span word="the">the</span> <span word="location">location</span> <span word="of">of</span> <span word="food">food</span>.</p>
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