六级冲刺练习阅读25
<p> <span word="Our">Our</span> <span word="prophecies">prophecies</span> <span word="need">need</span> <span word="not">not</span> <span word="be">be</span> <span word="completely">completely</span> <span word="wild">wild</span> <span word="guesses">guesses</span>. <span word="We">We</span> <span word="know">know</span> <span word="science">science</span> <span word="has">has</span> <span word="moved">moved</span> <span word="forward">forward</span> <span word="rapidly">rapidly</span> <span word="in">in</span> <span word="the">the</span> <span word="past">past</span> 50 <span word="years">years</span> <span word="and">and</span> <span word="will">will</span> <span word="continue">continue</span> <span word="to">to</span> <span word="do">do</span> <span word="so">so</span>. <span word="If">If</span> <span word="we">we</span> <span word="allow">allow</span> <span word="our">our</span> <span word="imaginations">imaginations</span> <span word="to">to</span> <span word="be">be</span> <span word="guided">guided</span> <span word="by">by</span> <span word="known">known</span> <span word="research">research</span>, <span word="our">our</span> <span word="prophecies">prophecies</span> <span word="need">need</span> <span word="not">not</span> <span word="be">be</span> <span word="sheer">sheer</span> <span word="fantasy">fantasy</span>. <span word="We">We</span> <span word="dont">dont</span> <span word="have">have</span> <span word="to">to</span> <span word="go">go</span> <span word="so">so</span> <span word="far">far</span> <span word="as">as</span> <span word="to">to</span> <span word="predict">predict</span> <span word="that">that</span> <span word="there">there</span> <span word="will">will</span> <span word="be">be</span> <span word="invasion">invasion</span> <span word="by">by</span> <span word="men">men</span> <span word="from">from</span> <span word="Mars">Mars</span>, <span word="or">or</span> <span word="that">that</span> <span word="all">all</span> <span word="food">food</span> <span word="and">and</span> <span word="nourishment">nourishment</span> <span word="will">will</span> <span word="be">be</span> <span word="taken">taken</span> <span word="in">in</span> <span word="capsule">capsule</span> <span word="form">form</span>, <span word="or">or</span> <span word="that">that</span> <span word="mechanical">mechanical</span> <span word="men">men</span> <span word="will">will</span> <span word="roam">roam</span> <span word="the">the</span> <span word="world">world</span>.</p><p> <span word="With">With</span> <span word="the">the</span> <span word="scientific">scientific</span> <span word="information">information</span> <span word="that">that</span> <span word="we">we</span> <span word="have">have</span> <span word="available">available</span> <span word="now">now</span>, <span word="lets">lets</span> <span word="make">make</span> <span word="an">an</span> <span word="estimate">estimate</span> <span word="of">of</span> <span word="progress">progress</span> <span word="in">in</span> <span word="air">air</span> <span word="travel">travel</span>. <span word="It">It</span> <span word="is">is</span> <span word="likely">likely</span> <span word="that">that</span> <span word="within">within</span> 50 <span word="years">years</span> <span word="we">we</span> <span word="shall">shall</span> <span word="travel">travel</span> <span word="through">through</span> <span word="the">the</span> <span word="air">air</span> <span word="at">at</span> <span word="a">a</span> <span word="speed">speed</span> <span word="of">of</span> 10,000 <span word="miles">miles</span> <span word="per">per</span> <span word="hour">hour</span>. <span word="Too">Too</span> <span word="fast">fast</span>? <span word="Not">Not</span> <span word="at">at</span> <span word="all">all</span>. <span word="Jet">Jet</span>-<span word="propelled">propelled</span> <span word="planes">planes</span> <span word="can">can</span> <span word="now">now</span> <span word="travel">travel</span> <span word="at">at</span> <span word="least">least</span> 1,000 <span word="miles">miles</span> <span word="an">an</span> <span word="hour">hour</span>, <span word="and">and</span> <span word="jet">jet</span> <span word="planes">planes</span> <span word="will">will</span> <span word="be">be</span> <span word="outmoded">outmoded</span> <span word="shortly">shortly</span> <span word="by">by</span> <span word="guided">guided</span> <span word="missiles">missiles</span>. <span word="The">The</span> <span word="X">X</span>-15 <span word="rockets">rockets</span> <span word="speed">speed</span> <span word="in">in</span> 1961 <span word="was">was</span> 3,690 <span word="miles">miles</span> <span word="per">per</span> <span word="hour">hour</span>, <span word="and">and</span> <span word="scientists">scientists</span> <span word="are">are</span> <span word="hoping">hoping</span> <span word="to">to</span> <span word="double">double</span> <span word="and">and</span> <span word="even">even</span> <span word="triple">triple</span> <span word="this">this</span> <span word="speed">speed</span>. <span word="They">They</span> <span word="will">will</span> <span word="accomplish">accomplish</span> <span word="this">this</span> <span word="speed">speed</span>-<span word="up">up</span>, <span word="because">because</span> <span word="there">there</span> <span word="is">is</span> <span word="no">no</span> <span word="apparent">apparent</span> <span word="scientific">scientific</span> <span word="obstacle">obstacle</span> <span word="to">to</span> <span word="prevent">prevent</span> <span word="it">it</span>.</p><p> <span word="Some">Some</span> <span word="day">day</span>, <span word="certain">certain</span> <span word="aerodynamic">aerodynamic</span> <span word="problems">problems</span> <span word="will">will</span> <span word="be">be</span> <span word="overcome">overcome</span> <span word="and">and</span> <span word="missiles">missiles</span> <span word="will">will</span> <span word="be">be</span> <span word="enlarged">enlarged</span> <span word="to">to</span> <span word="carry">carry</span> <span word="at">at</span> <span word="least">least</span> 25 <span word="passengers">passengers</span>. <span word="When">When</span> <span word="scientists">scientists</span> <span word="have">have</span> <span word="solved">solved</span> <span word="all">all</span> <span word="the">the</span> <span word="problems">problems</span> <span word="of">of</span> <span word="constructing">constructing</span> <span word="and">and</span> <span word="increasing">increasing</span> <span word="the">the</span> <span word="speed">speed</span> <span word="of">of</span> <span word="apparatus">apparatus</span>-<span word="carrying">carrying</span> <span word="missiles">missiles</span>, <span word="their">their</span> <span word="skill">skill</span> <span word="will">will</span> <span word="lead">lead</span> <span word="them">them</span> <span word="to">to</span> <span word="the">the</span> <span word="next">next</span> <span word="stepmissiles">stepmissiles</span> <span word="for">for</span> <span word="interplanetary">interplanetary</span> <span word="flight">flight</span>. <span word="This">This</span> <span word="prediction">prediction</span> <span word="is">is</span> <span word="a">a</span> <span word="scientific">scientific</span> <span word="possibility">possibility</span> <span word="in">in</span> <span word="the">the</span> <span word="near">near</span> <span word="future">future</span>.</p><p> <span word="Flights">Flights</span> <span word="into">into</span> <span word="outer">outer</span> <span word="space">space</span> <span word="began">began</span> <span word="when">when</span> <span word="Sputnik">Sputnik</span> <span word="I">I</span> <span word="was">was</span> <span word="launched">launched</span> <span word="in">in</span> 1957, <span word="and">and</span> <span word="man">man</span> <span word="first">first</span> <span word="went">went</span> <span word="into">into</span> <span word="space">space</span> <span word="in">in</span> 1961. <span word="During">During</span> <span word="the">the</span> <span word="late">late</span> 1950<span word="s">s</span> <span word="and">and</span> <span word="early">early</span> 1960<span word="s">s</span> <span word="many">many</span> <span word="satellitesman">satellitesman</span>-<span word="made">made</span> <span word="astral">astral</span> <span word="bodiesorbited">bodiesorbited</span> <span word="the">the</span> <span word="earth">earth</span> <span word="and">and</span> <span word="moon">moon</span>. <span word="Satellites">Satellites</span>, <span word="which">which</span> <span word="will">will</span> <span word="be">be</span> <span word="controlled">controlled</span> <span word="by">by</span> <span word="men">men</span> <span word="on">on</span> <span word="earth">earth</span>, <span word="may">may</span> <span word="have">have</span> <span word="many">many</span> <span word="beneficial">beneficial</span> <span word="uses">uses</span>. <span word="Perhaps">Perhaps</span> <span word="scientists">scientists</span> <span word="will">will</span> <span word="discover">discover</span> <span word="a">a</span> <span word="source">source</span> <span word="of">of</span> <span word="energy">energy</span> 100 <span word="miles">miles</span> <span word="above">above</span> <span word="the">the</span> <span word="earth">earth</span>. <span word="This">This</span> <span word="energy">energy</span> <span word="could">could</span> <span word="be">be</span> <span word="transmitted">transmitted</span> <span word="to">to</span> <span word="us">us</span> <span word="as">as</span> <span word="a">a</span> <span word="source">source</span> <span word="of">of</span> <span word="power">power</span> <span word="for">for</span> <span word="manufacturing">manufacturing</span> <span word="plants">plants</span> <span word="or">or</span> <span word="even">even</span> <span word="for">for</span> <span word="our">our</span> <span word="cook">cook</span> <span word="stoves">stoves</span>. <span word="Or">Or</span> <span word="one">one</span> <span word="of">of</span> <span word="these">these</span> <span word="missiles">missiles</span> <span word="might">might</span> <span word="serve">serve</span> <span word="as">as</span> <span word="the">the</span> <span word="medium">medium</span> <span word="for">for</span> <span word="transmitting">transmitting</span> <span word="communications">communications</span> <span word="across">across</span> <span word="the">the</span> <span word="globe">globe</span>. <span word="Telephonic">Telephonic</span> <span word="communications">communications</span> <span word="might">might</span> <span word="be">be</span> <span word="carried">carried</span> <span word="on">on</span> <span word="by">by</span> <span word="beaming">beaming</span> <span word="waves">waves</span> <span word="at">at</span> <span word="the">the</span> <span word="missile">missile</span>, <span word="which">which</span> <span word="would">would</span> <span word="in">in</span> <span word="turn">turn</span> <span word="beam">beam</span> <span word="waves">waves</span> <span word="at">at</span> <span word="a">a</span> <span word="telephone">telephone</span> <span word="halfway">halfway</span> <span word="across">across</span> <span word="the">the</span> <span word="world">world</span>. <span word="The">The</span> <span word="missile">missile</span> <span word="might">might</span> <span word="be">be</span> <span word="the">the</span> <span word="telephonic">telephonic</span> <span word="connection">connection</span>, <span word="for">for</span> <span word="example">example</span>, <span word="between">between</span> <span word="you">you</span> <span word="in">in</span> <span word="New">New</span> <span word="York">York</span>, <span word="and">and</span> <span word="a">a</span> <span word="friend">friend</span> <span word="in">in</span> <span word="Bangkok">Bangkok</span>.</p>
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