2017届高三英语一轮单元检测：选修7 Unit4《 Sharing》
<p> Ⅰ.阅读理解<span word="A">A</span></p><p> (2017·河南省六市联考)<span word="Imagine">Imagine</span> <span word="you">you</span> <span word="are">are</span> <span word="on">on</span> <span word="a">a</span> <span word="cold">cold</span> <span word="mountain">mountain</span> <span word="with">with</span> <span word="steep">steep</span> <span word="rocks">rocks</span> <span word="he">he</span> <span word="sun">sun</span>’<span word="s">s</span> <span word="rays">rays</span> <span word="stronger">stronger</span>.<span word="Just">Just</span> <span word="before">before</span> <span word="you">you</span> <span word="reach">reach</span> <span word="the">the</span> <span word="snowline">snowline</span>，<span word="you">you</span> <span word="find">find</span> <span word="what">what</span> <span word="you">you</span> <span word="came">came</span> <span word="for">for</span>—<span word="a">a</span> <span word="small">small</span> <span word="white">white</span> <span word="flower">flower</span>，<span word="the">the</span> <span word="edelweiss">edelweiss</span>(火绒草)(高山的) <span word="areas">areas</span>.<span word="here">here</span>.<span word="Plants">Plants</span> <span word="rely">rely</span> <span word="on">on</span> <span word="oxygen">oxygen</span>，<span word="water">water</span>，<span word="and">and</span> <span word="sunlight">sunlight</span> <span word="to">to</span> <span word="make">make</span> <span word="their">their</span> <span word="own">own</span> <span word="food">food</span> <span word="through">through</span> <span word="the">the</span> <span word="process">process</span> <span word="of">of</span> <span word="photosynthesis">photosynthesis</span>(光合作用)．<span word="The">The</span> <span word="alpine">alpine</span> <span word="means">means</span> <span word="less">less</span> <span word="COan">COan</span> <span word="burn">burn</span> <span word="a">a</span> <span word="plant">plant</span>’<span word="s">s</span> <span word="leaves">leaves</span>.<span word="There">There</span> <span word="is">is</span> <span word="little">little</span> <span word="water">water</span> <span word="here">here</span>，<span word="so">so</span> <span word="the">the</span> <span word="soil">soil</span> <span word="is">is</span> <span word="dry">dry</span> <span word="and">and</span> <span word="rocky">rocky</span>.<span word="You">You</span> <span word="also">also</span> <span word="won">won</span>’<span word="t">t</span> <span word="find">find</span> <span word="high">high</span> <span word="trees">trees</span> <span word="because">because</span> <span word="the">the</span> <span word="cold">cold</span> <span word="wind">wind</span> <span word="would">would</span> <span word="blow">blow</span> <span word="them">them</span> <span word="over">over</span>!</p><p> <span word="Alpine">Alpine</span> <span word="plants">plants</span> <span word="have">have</span> <span word="advantages">advantages</span> <span word="that">that</span> <span word="help">help</span> <span word="them">them</span> <span word="survive">survive</span> <span word="the">the</span> <span word="bad">bad</span> <span word="conditions">conditions</span>.<span word="Like">Like</span> <span word="all">all</span> <span word="alpine">alpine</span> <span word="plants">plants</span>，<span word="the">the</span> <span word="edelweiss">edelweiss</span> <span word="stays">stays</span> <span word="close">close</span> <span word="to">to</span> <span word="the">the</span> <span word="ground">ground</span> <span word="to">to</span> <span word="avoid">avoid</span> <span word="the">the</span> <span word="wind">wind</span>.<span word="The">The</span> <span word="cold">cold</span> <span word="water">water</span> <span word="is">is</span> <span word="deep">deep</span> <span word="underground">underground</span>，<span word="so">so</span> <span word="the">the</span> <span word="edelweiss">edelweiss</span> <span word="grows">grows</span> <span word="very">very</span> <span word="deep">deep</span> <span word="roots">roots</span>.<span word="Its">Its</span> <span word="leaves">leaves</span> <span word="have">have</span> <span word="a">a</span> <span word="thick">thick</span> <span word="covering">covering</span>，<span word="which">which</span> <span word="protects">protects</span> <span word="the">the</span> <span word="plant">plant</span> <span word="from">from</span> <span word="the">the</span> <span word="wind">wind</span> <span word="and">and</span> <span word="the">the</span> <span word="sun">sun</span>’<span word="s">s</span> <span word="bright">bright</span> <span word="rays">rays</span>.<span word="All">All</span> <span word="these">these</span> <span word="special">special</span> <span word="characteristics">characteristics</span> <span word="help">help</span> <span word="it">it</span> <span word="grow">grow</span>，<span word="but">but</span> <span word="very">very</span> <span word="slowly">slowly</span>.</p><p> <span word="The">The</span> <span word="edelweiss">edelweiss</span> <span word="can">can</span> <span word="live">live</span> <span word="in">in</span> <span word="the">the</span> <span word="conditions">conditions</span>，<span word="but">but</span> <span word="humans">humans</span> <span word="can">can</span>’<span word="t">t</span>.<span word="Climbing">Climbing</span> <span word="in">in</span> <span word="the">the</span> <span word="high">high</span> <span word="and">and</span> <span word="cold">cold</span> <span word="mountains">mountains</span> <span word="is">is</span> <span word="dangerous">dangerous</span> <span word="and">and</span> <span word="difficult">difficult</span>.<span word="This">This</span> <span word="is">is</span> <span word="why">why</span> <span word="the">the</span> <span word="edelweiss">edelweiss</span> <span word="became">became</span> <span word="such">such</span> <span word="a">a</span> <span word="special">special</span> <span word="flower">flower</span>.<span word="Long">Long</span> <span word="ago">ago</span>，<span word="a">a</span> <span word="young">young</span> <span word="man">man</span> <span word="would">would</span> <span word="pick">pick</span> <span word="an">an</span> <span word="edelweiss">edelweiss</span> <span word="flower">flower</span> <span word="to">to</span> <span word="prove">prove</span> <span word="his">his</span> <span word="love">love</span> <span word="to">to</span> <span word="a">a</span> <span word="girl">girl</span>，<span word="although">although</span> <span word="it">it</span> <span word="was">was</span> <span word="risky">risky</span>.<span word="Many">Many</span> <span word="men">men</span> <span word="died">died</span> <span word="while">while</span> <span word="trying">trying</span>.<span word="Getting">Getting</span> <span word="the">the</span> <span word="flower">flower</span> <span word="proved">proved</span> <span word="that">that</span> <span word="the">the</span> <span word="man">man</span> <span word="was">was</span> <span word="physically">physically</span> <span word="strong">strong</span>，<span word="brave">brave</span>，<span word="and">and</span> <span word="devoted">devoted</span>.</p><p> <span word="Alpine">Alpine</span> <span word="plants">plants</span> <span word="can">can</span>’<span word="t">t</span> <span word="spread">spread</span> <span word="seeds">seeds</span>，<span word="so">so</span> <span word="it">it</span>’<span word="s">s</span> <span word="difficult">difficult</span> <span word="for">for</span> <span word="new">new</span> <span word="plants">plants</span> <span word="to">to</span> <span word="grow">grow</span>.<span word="Once">Once</span> <span word="all">all</span> <span word="the">the</span> <span word="edelweiss">edelweiss</span> <span word="flowers">flowers</span> <span word="are">are</span> <span word="gone">gone</span> <span word="in">in</span> <span word="an">an</span> <span word="area">area</span>，<span word="they">they</span> <span word="will">will</span> <span word="not">not</span> <span word="re">re</span><span word="grow">grow</span>.<span word="Governments">Governments</span> <span word="help">help</span> <span word="protect">protect</span> <span word="the">the</span> <span word="edelweiss">edelweiss</span> <span word="because">because</span> <span word="it">it</span> <span word="is">is</span> <span word="considered">considered</span> <span word="an">an</span> <span word="endangered">endangered</span> <span word="plant">plant</span>.</p>
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