2017届四川省宜宾市兴文县高考英语一轮复习阅读理解训练：10（含解析）
<p> 兴文县高考英语一轮复习阅读理解训练10</p><p> 阅读理解。阅读下列短文, 从给的四个选项 (<span word="A">A</span>、<span word="B">B</span>、<span word="C">C</span>和<span word="D">D</span>) 中, 选出最佳选项。</p><p> <span word="US">US</span> <span word="researchers">researchers</span> <span word="have">have</span> <span word="found">found</span> <span word="traces">traces</span> <span word="of">of</span> <span word="an">an</span> <span word="ancient">ancient</span> <span word="lake">lake</span> <span word="on">on</span> <span word="Mars">Mars</span> <span word="recently">recently</span>，<span word="increasing">increasing</span> <span word="hopes">hopes</span> <span word="of">of</span> <span word="discovering">discovering</span> <span word="evidence">evidence</span> <span word="that">that</span> <span word="billions">billions</span> <span word="of">of</span> <span word="years">years</span> <span word="ago">ago</span> <span word="the">the</span> <span word="Red">Red</span> <span word="planet">planet</span> <span word="hosted">hosted</span> <span word="life">life</span>.</p><p> <span word="The">The</span> <span word="lake">lake</span>，<span word="which">which</span> <span word="dates">dates</span> <span word="back">back</span> <span word="some">some</span> 3.4 <span word="billion">billion</span> <span word="years">years</span>，<span word="appears">appears</span> <span word="to">to</span> <span word="have">have</span> <span word="covered">covered</span> <span word="as">as</span> <span word="much">much</span> <span word="as">as</span> 80 <span word="square">square</span> <span word="miles">miles</span> <span word="and">and</span> <span word="was">was</span> <span word="up">up</span> <span word="to">to</span> 1,500 <span word="feet">feet</span> <span word="deep">deep</span>，<span word="said">said</span> <span word="the">the</span> <span word="team">team</span> <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Colorado">Colorado</span>.</p><p> “<span word="This">This</span> <span word="is">is</span> <span word="the">the</span> <span word="first">first</span> <span word="clear">clear</span> <span word="evidence">evidence</span> <span word="of">of</span> <span word="shorelines">shorelines</span> <span word="on">on</span> <span word="the">the</span> <span word="surface">surface</span> <span word="of">of</span> <span word="Mars">Mars</span>，”<span word="said">said</span> <span word="Boulder">Boulder</span>' <span word="s">s</span> <span word="research">research</span> <span word="associate">associate</span>，<span word="Gaetano">Gaetano</span> <span word="Di">Di</span> <span word="Achille">Achille</span>，<span word="in">in</span> <span word="a">a</span> <span word="study">study</span> <span word="published">published</span> <span word="in">in</span> <span word="the">the</span> <span word="latest">latest</span> <span word="edition">edition</span> <span word="of">of</span> <span word="Geophysical">Geophysical</span> <span word="Rese">Rese</span> <span word="arch">arch</span> <span word="Letters">Letters</span>.</p><p> “<span word="The">The</span> <span word="identification">identification</span> <span word="of">of</span> <span word="the">the</span> <span word="shorelines">shorelines</span> <span word="and">and</span> <span word="accompanying">accompanying</span> <span word="geological">geological</span> <span word="evidence">evidence</span> <span word="allows">allows</span> <span word="us">us</span> <span word="to">to</span> <span word="calculate">calculate</span> <span word="the">the</span> <span word="size">size</span> <span word="and">and</span> <span word="volume">volume</span> <span word="of">of</span> <span word="the">the</span> <span word="lake">lake</span>，<span word="which">which</span> <span word="appears">appears</span> <span word="to">to</span> <span word="have">have</span> <span word="formed">formed</span> <span word="about">about</span> 3.4 <span word="billion">billion</span> <span word="years">years</span> <span word="ago">ago</span>.”</p><p> <span word="Analysis">Analysis</span> <span word="of">of</span> <span word="the">the</span> <span word="images">images</span> <span word="has">has</span> <span word="shown">shown</span> <span word="the">the</span> <span word="water">water</span> <span word="carved">carved</span> <span word="out">out</span> <span word="the">the</span> <span word="canyon">canyon</span>(溪谷)<span word="in">in</span> <span word="which">which</span> <span word="it">it</span> <span word="was">was</span> <span word="found">found</span>，<span word="which">which</span> <span word="then">then</span> <span word="opened">opened</span> <span word="out">out</span> <span word="into">into</span> <span word="a">a</span> <span word="valley">valley</span> <span word="depositing">depositing</span>(使淤积)<span word="sediment">sediment</span>(沉积)<span word="which">which</span> <span word="formed">formed</span> <span word="a">a</span> <span word="delta">delta</span>(三角洲)．</p><p> “<span word="Finding">Finding</span> <span word="shorelines">shorelines</span> <span word="is">is</span> <span word="a">a</span> <span word="great">great</span> <span word="discovery">discovery</span> <span word="to">to</span> <span word="us">us</span>，”<span word="said">said</span> <span word="assistant">assistant</span> <span word="professor">professor</span> <span word="Brian">Brian</span> <span word="Hynek">Hynek</span>，<span word="adding">adding</span> <span word="it">it</span> <span word="showed">showed</span> <span word="the">the</span> <span word="lake">lake</span> <span word="existed">existed</span> <span word="at">at</span> <span word="a">a</span> <span word="time">time</span> <span word="when">when</span> <span word="Mars">Mars</span> <span word="was">was</span> <span word="thought">thought</span> <span word="to">to</span> <span word="have">have</span> <span word="been">been</span> <span word="cold">cold</span> <span word="and">and</span> <span word="dry">dry</span>.</p><p> <span word="Scientists">Scientists</span> <span word="believe">believe</span> <span word="the">the</span> <span word="oldest">oldest</span> <span word="surfaces">surfaces</span> <span word="on">on</span> <span word="Mars">Mars</span> <span word="formed">formed</span> <span word="during">during</span> <span word="the">the</span> <span word="wet">wet</span> <span word="and">and</span> <span word="warm">warm</span> <span word="era">era</span> <span word="known">known</span> <span word="as">as</span> <span word="the">the</span> <span word="Noachan">Noachan</span> <span word="epoch">epoch</span>，<span word="about">about</span> 4.1 <span word="billion">billion</span> <span word="to">to</span> 3.7 <span word="billion">billion</span> <span word="years">years</span> <span word="ago">ago</span>.</p>
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