2015年职称英语考试(理工类)完形填空专练(1)
<p> <span word="Why">Why</span> <span word="is">is</span> <span word="the">the</span> <span word="two">two</span> <span word="scientists">scientists</span> <span word="work">work</span> <span word="so">so</span> <span word="important">important</span> <span word="to">to</span> <span word="science">science</span>?</p><p> <span word="In">In</span> <span word="the">the</span> 1920<span word="s">s</span>,<span word="Satyendra">Satyendra</span> <span word="Nath">Nath</span> <span word="Bose">Bose</span> <span word="was">was</span> <span word="studying">studying</span> <span word="an">an</span> <span word="interesting">interesting</span> ____<span word="about">about</span> <span word="special">special</span> <span word="light">light</span> <span word="particleswe">particleswe</span> <span word="now">now</span> <span word="call">call</span> <span word="photons">photons</span>.<span word="Bose">Bose</span> <span word="had">had</span> <span word="trouble">trouble</span> ____ <span word="other">other</span> <span word="scientists">scientists</span> <span word="to">to</span> <span word="believe">believe</span> <span word="his">his</span> <span word="theory">theory</span>，<span word="so">so</span> <span word="he">he</span> <span word="contacted">contacted</span> <span word="Albert">Albert</span> <span word="Einstein">Einstein</span>.<span word="Einsteins">Einsteins</span> <span word="calculations">calculations</span> <span word="helped">helped</span> <span word="him">him</span> <span word="theorize">theorize</span> <span word="that">that</span> <span word="atoms">atoms</span> ____<span word="behave">behave</span> <span word="as">as</span> <span word="Bose">Bose</span> <span word="thought">thought</span>-<span word="but">but</span> <span word="only">only</span> <span word="at">at</span> <span word="very">very</span> <span word="cold">cold</span> <span word="temperatures">temperatures</span>.</p><p> <span word="Scientists">Scientists</span> <span word="have">have</span> <span word="also">also</span> <span word="discovered">discovered</span> <span word="that">that</span> <span word="ultra">ultra</span>-<span word="coldatoms">coldatoms</span> <span word="can">can</span> <span word="help">help</span> <span word="them">them</span> <span word="make">make</span> <span word="the">the</span> <span word="worlds">worlds</span> <span word="atomic">atomic</span> <span word="clocks">clocks</span> <span word="even">even</span> ____<span word="accurate">accurate</span>.<span word="These">These</span> <span word="clocks">clocks</span> <span word="are">are</span> <span word="so">so</span> <span word="accurate">accurate</span> <span word="today">today</span> <span word="they">they</span> <span word="would">would</span> <span word="only">only</span> <span word="lose">lose</span> <span word="one">one</span> <span word="second">second</span> ____<span word="six">six</span> <span word="million">million</span> <span word="years">years</span>! <span word="Such">Such</span> <span word="accuracy">accuracy</span> <span word="will">will</span> <span word="help">help</span> <span word="us">us</span> <span word="travel">travel</span> <span word="in">in</span> <span word="space">space</span> <span word="because">because</span> <span word="distance">distance</span> <span word="is">is</span> <span word="velocity">velocity</span> <span word="times">times</span> <span word="time">time</span>.<span word="With">With</span> <span word="the">the</span> <span word="long">long</span> <span word="distances">distances</span> <span word="involved">involved</span> <span word="in">in</span> <span word="space">space</span> ____，<span word="we">we</span> <span word="need">need</span> <span word="to">to</span> <span word="know">know</span> <span word="time">time</span> <span word="as">as</span> <span word="accurately">accurately</span> <span word="as">as</span> <span word="possible">possible</span> <span word="to">to</span> <span word="get">get</span> <span word="accurate">accurate</span> <span word="distance">distance</span>.</p><p> 51.<span word="A">A</span>. <span word="operated">operated</span> <span word="B">B</span>. <span word="opened">opened</span> <span word="C">C</span>. <span word="offered">offered</span> <span word="D">D</span>. <span word="occurred">occurred</span></p><p> 52.<span word="A">A</span>. <span word="space">space</span> <span word="B">B</span>. <span word="star">star</span> <span word="C">C</span>. <span word="Earth">Earth</span> <span word="D">D</span>. <span word="planet">planet</span></p><p> 53.<span word="A">A</span>. <span word="where">where</span> <span word="B">B</span>. <span word="what">what</span> <span word="C">C</span>. <span word="when">when</span> <span word="D">D</span>. <span word="whether">whether</span></p><p> 54.<span word="A">A</span>. <span word="sadly">sadly</span> <span word="B">B</span>. <span word="repeatedly">repeatedly</span> <span word="C">C</span>. <span word="Freely">Freely</span> <span word="D">D</span>. <span word="safely">safely</span></p><p> 55.<span word="A">A</span>. <span word="energy">energy</span> <span word="B">B</span>. <span word="year">year</span> <span word="C">C</span>. <span word="system">system</span> <span word="D">D</span>. <span word="rays">rays</span></p><p> 56.<span word="A">A</span>. <span word="by">by</span> <span word="B">B</span>. <span word="along">along</span> <span word="C">C</span>. <span word="away">away</span> <span word="D">D</span>. <span word="With">With</span></p><p> 57.<span word="A">A</span>. <span word="location">location</span> <span word="B">B</span> <span word="education">education</span> <span word="C">C</span> <span word="status">status</span> <span word="D">D</span> <span word="knowledge">knowledge</span></p><p> 58.<span word="A">A</span>. <span word="interesting">interesting</span> <span word="B">B</span>. <span word="impossible">impossible</span> <span word="C">C</span>. <span word="reasonable">reasonable</span> <span word="D">D</span>. <span word="necessary">necessary</span></p><p> 59.<span word="A">A</span>. <span word="burnt">burnt</span> <span word="B">B</span>. <span word="cooled">cooled</span> <span word="C">C</span>. <span word="blown">blown</span> <span word="D">D</span>. <span word="cut">cut</span></p><p> 60.<span word="A">A</span>. <span word="invention">invention</span> <span word="B">B</span>. <span word="experiment">experiment</span> <span word="C">C</span>. <span word="paper">paper</span> <span word="D">D</span>. <span word="theory">theory</span></p>
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