职称英语理工类A级阅读理解题必备练习(3)
<p> <span word="Its">Its</span> <span word="a">a</span> <span word="strange">strange</span> <span word="partnership">partnership</span>, <span word="but">but</span> <span word="a">a</span> <span word="very">very</span> <span word="effective">effective</span> <span word="one">one</span>: <span word="Satellites">Satellites</span> <span word="and">and</span> <span word="space">space</span>-<span word="shuttle">shuttle</span>-<span word="carried">carried</span> <span word="radar">radar</span> <span word="are">are</span> <span word="helping">helping</span> <span word="archeologists">archeologists</span>. <span word="How">How</span>? <span word="By">By</span> <span word="seeing">seeing</span> <span word="through">through</span> <span word="sand">sand</span> <span word="or">or</span> <span word="through">through</span> <span word="treetops">treetops</span> <span word="to">to</span> <span word="locate">locate</span> <span word="important">important</span> <span word="archeological">archeological</span> <span word="sites">sites</span>. <span word="Take">Take</span>, <span word="for">for</span> <span word="example">example</span>, <span word="the">the</span> <span word="second">second</span> 1981 <span word="flight">flight</span> <span word="of">of</span> <span word="the">the</span> <span word="Space">Space</span> <span word="Shuttle">Shuttle</span> <span word="Challenger">Challenger</span>. <span word="During">During</span> <span word="that">that</span> <span word="mission">mission</span>, <span word="a">a</span> <span word="powerful">powerful</span>, <span word="experimental">experimental</span> <span word="radar">radar</span> <span word="was">was</span> <span word="pointed">pointed</span> <span word="at">at</span> <span word="a">a</span> <span word="lifeless">lifeless</span> <span word="stretch">stretch</span> <span word="of">of</span> <span word="desert">desert</span> <span word="in">in</span> <span word="Egypt">Egypt</span> <span word="called">called</span> <span word="the">the</span> <span word="Selima">Selima</span> <span word="Sand">Sand</span> <span word="Sheet">Sheet</span> . <span word="To">To</span> <span word="everyones">everyones</span> <span word="surprise">surprise</span>, <span word="the">the</span> <span word="radar">radar</span> <span word="penetrated">penetrated</span> <span word="through">through</span> <span word="the">the</span> <span word="sand">sand</span> <span word="to">to</span> <span word="the">the</span> <span word="harder">harder</span> <span word="rock">rock</span> <span word="beneath">beneath</span>. <span word="On">On</span> <span word="the">the</span> <span word="surface">surface</span>, <span word="there">there</span> <span word="is">is</span> <span word="a">a</span> <span word="little">little</span> <span word="indication">indication</span> <span word="that">that</span> <span word="Africas">Africas</span> <span word="Sahara">Sahara</span> <span word="Desert">Desert</span> <span word="was">was</span> <span word="never">never</span> <span word="anything">anything</span> <span word="but">but</span> <span word="a">a</span> <span word="desert">desert</span>. <span word="When">When</span> <span word="the">the</span> <span word="archeologists">archeologists</span> <span word="studied">studied</span> <span word="the">the</span> <span word="radar">radar</span> <span word="images">images</span>, <span word="they">they</span> <span word="saw">saw</span> <span word="what">what</span> <span word="seemed">seemed</span> <span word="to">to</span> <span word="be">be</span> <span word="impossible">impossible</span>: <span word="there">there</span> <span word="was">was</span> <span word="sand">sand</span>-<span word="buried">buried</span> <span word="landscape">landscape</span> <span word="that">that</span> <span word="was">was</span> <span word="shaped">shaped</span> <span word="by">by</span> <span word="flowing">flowing</span> <span word="water">water</span>; <span word="traces">traces</span> <span word="of">of</span> <span word="ancient">ancient</span> <span word="riverbeds">riverbeds</span> <span word="appeared">appeared</span> <span word="to">to</span> <span word="be">be</span> <span word="over">over</span> <span word="nine">nine</span> <span word="miles">miles</span> <span word="wide">wide</span>, <span word="far">far</span> <span word="wider">wider</span> <span word="than">than</span> <span word="most">most</span> <span word="sections">sections</span> <span word="of">of</span> <span word="the">the</span> <span word="present">present</span>-<span word="day">day</span> <span word="Nile">Nile</span> <span word="River">River</span>. <span word="Today">Today</span>, <span word="the">the</span> <span word="area">area</span> <span word="is">is</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="hottest">hottest</span>, <span word="driest">driest</span> <span word="desert">desert</span> <span word="in">in</span> <span word="the">the</span> <span word="world">world</span>. <span word="More">More</span> <span word="recently">recently</span>, <span word="Landsat">Landsat</span> 4, <span word="a">a</span> <span word="special">special</span> <span word="Earth">Earth</span>-<span word="mapping">mapping</span> <span word="satellite">satellite</span>, <span word="aided">aided</span> <span word="in">in</span> <span word="the">the</span> <span word="discovery">discovery</span> <span word="of">of</span> <span word="ancient">ancient</span> <span word="Mayan">Mayan</span> <span word="ruins">ruins</span> <span word="in">in</span> <span word="Mexico">Mexico</span>. <span word="Landsat">Landsat</span> <span word="can">can</span>, <span word="with">with</span> <span word="the">the</span> <span word="help">help</span> <span word="of">of</span> <span word="false">false</span>-<span word="color">color</span> <span word="imagery">imagery</span>, <span word="see">see</span> <span word="through">through</span> <span word="much">much</span> <span word="of">of</span> <span word="the">the</span> <span word="area">area</span>. <span word="Armed">Armed</span> <span word="with">with</span> <span word="these">these</span> <span word="maps">maps</span>, <span word="a">a</span> <span word="five">five</span>-<span word="person">person</span> <span word="expedition">expedition</span> <span word="took">took</span> <span word="to">to</span> <span word="the">the</span> <span word="air">air</span> <span word="in">in</span> <span word="a">a</span> <span word="helicopter">helicopter</span>. 41 <span word="With">With</span> <span word="the">the</span> <span word="help">help</span> <span word="of">of</span> <span word="the">the</span> <span word="space">space</span>-<span word="shuttle">shuttle</span>-<span word="carried">carried</span> <span word="radar">radar</span>, <span word="archeologists">archeologists</span> <span word="found">found</span> <span word="B">B</span> <span word="traces">traces</span> <span word="of">of</span> <span word="ancient">ancient</span> <span word="riverbeds">riverbeds</span> <span word="under">under</span> <span word="the">the</span> <span word="Sahara">Sahara</span> <span word="Desert">Desert</span>. <span word="D">D</span> <span word="a">a</span> <span word="mountain">mountain</span> <span word="beneath">beneath</span> <span word="the">the</span> <span word="Sahara">Sahara</span> <span word="Desert">Desert</span>. <span word="A">A</span> <span word="It">It</span> <span word="was">was</span> <span word="an">an</span> <span word="old">old</span> <span word="avenue">avenue</span>, <span word="C">C</span> <span word="It">It</span> <span word="was">was</span> <span word="shaped">shaped</span> <span word="by">by</span> <span word="flowing">flowing</span> <span word="water">water</span>. 43 <span word="The">The</span> <span word="stream">stream</span>-<span word="rounded">rounded</span> <span word="pebbles">pebbles</span> <span word="and">and</span> <span word="Stone">Stone</span>-<span word="Age">Age</span> <span word="axes">axes</span> <span word="which">which</span> <span word="were">were</span> <span word="found">found</span> <span word="along">along</span> <span word="the">the</span> <span word="ancient">ancient</span> <span word="river">river</span> <span word="banks">banks</span> <span word="show">show</span> <span word="that">that</span> <span word="B">B</span> <span word="ancient">ancient</span> <span word="people">people</span> <span word="didnt">didnt</span> <span word="know">know</span> <span word="how">how</span> <span word="to">to</span> <span word="make">make</span> <span word="weapons">weapons</span>. <span word="D">D</span> <span word="early">early</span> <span word="humans">humans</span> <span word="were">were</span> <span word="good">good</span> <span word="at">at</span> <span word="fighting">fighting</span> <span word="with">with</span> <span word="sharp">sharp</span> <span word="weapons">weapons</span>. <span word="A">A</span> <span word="old">old</span> <span word="New">New</span> <span word="England">England</span> <span word="fences">fences</span>. <span word="C">C</span> <span word="the">the</span> <span word="expedition">expedition</span> <span word="members">members</span>. 45 <span word="Which">Which</span> <span word="of">of</span> <span word="the">the</span> <span word="following">following</span> <span word="best">best</span> <span word="summarizes">summarizes</span> <span word="the">the</span> <span word="main">main</span> <span word="information">information</span> <span word="of">of</span> <span word="the">the</span> <span word="passage">passage</span>? <span word="B">B</span> <span word="Without">Without</span> <span word="high">high</span>-<span word="tech">tech</span>, <span word="the">the</span> <span word="archeologists">archeologists</span> <span word="work">work</span> <span word="would">would</span> <span word="come">come</span> <span word="to">to</span> <span word="a">a</span> <span word="stop">stop</span> <span word="D">D</span> <span word="High">High</span>-<span word="tech">tech</span> <span word="makes">makes</span> <span word="the">the</span> <span word="archeologists">archeologists</span> <span word="work">work</span> <span word="more">more</span> <span word="fruitful">fruitful</span>.</p>
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