2017届高考英语一轮基础知识复习：Unit 3 Life in the future（新人教版必修5）
<p> <span word="Unit">Unit</span> 3 <span word="Life">Life</span> <span word="in">in</span> <span word="the">the</span> <span word="future">future</span></p><p> Ⅰ.阅读理解</p><p> (2016·广东四校第一次联考)</p><p> <span word="See">See</span> <span word="a">a</span> <span word="cellphone">cellphone</span> <span word="cover">cover</span> <span word="that">that</span> <span word="you">you</span> <span word="like">like</span> <span word="on">on</span> <span word="Taobao">Taobao</span>? <span word="Forget">Forget</span> <span word="about">about</span> <span word="placing">placing</span> <span word="an">an</span> <span word="order">order</span>, <span word="paying">paying</span> <span word="the">the</span> <span word="bill">bill</span> <span word="online">online</span> <span word="and">and</span> <span word="waiting">waiting</span> <span word="for">for</span> <span word="days">days</span> <span word="for">for</span> <span word="it">it</span> <span word="to">to</span> <span word="be">be</span> <span word="delivered">delivered</span> <span word="to">to</span> <span word="you">you</span>. <span word="In">In</span> <span word="the">the</span> <span word="near">near</span> <span word="future">future</span>, <span word="you">you</span>'<span word="ll">ll</span> <span word="be">be</span> <span word="able">able</span> <span word="to">to</span> <span word="get">get</span> <span word="it">it</span> <span word="in">in</span> <span word="minutes">minutes</span> <span word="just">just</span> <span word="by">by</span> <span word="hitting">hitting</span> “<span word="print">print</span>” <span word="on">on</span> <span word="your">your</span> <span word="computer">computer</span>.</p><p> <span word="You">You</span> <span word="might">might</span> <span word="find">find</span> <span word="it">it</span> <span word="hard">hard</span> <span word="to">to</span> <span word="believe">believe</span> <span word="that">that</span> <span word="you">you</span> <span word="could">could</span> <span word="actually">actually</span> “<span word="print">print</span>” <span word="an">an</span> <span word="object">object</span> <span word="like">like</span> <span word="you">you</span> <span word="would">would</span> <span word="a">a</span> <span word="picture">picture</span>. <span word="But">But</span> <span word="it">it</span> <span word="is">is</span> <span word="not">not</span> <span word="that">that</span> <span word="hard">hard</span> <span word="to">to</span> <span word="understand">understand</span> <span word="how">how</span> <span word="it">it</span> <span word="would">would</span> <span word="work">work</span>. <span word="Just">Just</span> <span word="as">as</span> <span word="a">a</span> <span word="traditional">traditional</span> <span word="printer">printer</span> <span word="sprays">sprays</span> (喷) <span word="ink">ink</span> <span word="onto">onto</span> <span word="paper">paper</span> <span word="line">line</span> <span word="by">by</span> <span word="line">line</span>, <span word="modern">modern</span> 3<span word="D">D</span> <span word="printers">printers</span> <span word="spread">spread</span> <span word="material">material</span> <span word="onto">onto</span> <span word="a">a</span> <span word="surface">surface</span> <span word="layer">layer</span> <span word="by">by</span> <span word="layer">layer</span>, <span word="from">from</span> <span word="the">the</span> <span word="bottom">bottom</span> <span word="to">to</span> <span word="the">the</span> <span word="top">top</span>, <span word="gradually">gradually</span> <span word="building">building</span> <span word="up">up</span> <span word="a">a</span> <span word="shape">shape</span>.</p><p> <span word="Instead">Instead</span> <span word="of">of</span> <span word="ink">ink</span>, <span word="the">the</span> <span word="materials">materials</span> <span word="the">the</span> 3<span word="D">D</span> <span word="printer">printer</span> <span word="uses">uses</span> <span word="are">are</span> <span word="mainly">mainly</span> <span word="plastic">plastic</span>, <span word="resin">resin</span>(树脂) <span word="and">and</span> <span word="certain">certain</span> <span word="metals">metals</span>. <span word="The">The</span> <span word="thinner">thinner</span> <span word="each">each</span> <span word="layer">layer</span> <span word="is">is</span>—<span word="from">from</span> <span word="a">a</span> <span word="millimetre">millimetre</span> <span word="to">to</span> <span word="less">less</span> <span word="than">than</span> <span word="the">the</span> <span word="width">width</span> <span word="of">of</span> <span word="a">a</span> <span word="hair">hair</span>—<span word="the">the</span> <span word="smoother">smoother</span> <span word="and">and</span> <span word="finer">finer</span> <span word="the">the</span> <span word="object">object</span> <span word="will">will</span> <span word="be">be</span>.</p><p> <span word="This">This</span> <span word="may">may</span> <span word="sound">sound</span> <span word="like">like</span> <span word="a">a</span> <span word="completely">completely</span> <span word="new">new</span> <span word="technology">technology</span>, <span word="but">but</span> <span word="the">the</span> <span word="truth">truth</span> <span word="is">is</span> <span word="that">that</span> 3<span word="D">D</span> <span word="printing">printing</span> <span word="has">has</span> <span word="been">been</span> <span word="around">around</span> <span word="since">since</span> <span word="the">the</span> <span word="late">late</span> 1980<span word="s">s</span>. <span word="Back">Back</span> <span word="then">then</span>, <span word="it">it</span> <span word="was">was</span> <span word="barely">barely</span> <span word="affordable">affordable</span> <span word="for">for</span> <span word="most">most</span> <span word="people">people</span>, <span word="so">so</span> <span word="few">few</span> <span word="knew">knew</span> <span word="about">about</span> <span word="it">it</span>.</p><p> <span word="Last">Last</span> <span word="year">year</span>, <span word="though">though</span>, <span word="saw">saw</span> <span word="a">a</span> <span word="big">big</span> <span word="change">change</span> <span word="in">in</span> <span word="the">the</span> 3<span word="D">D</span> <span word="printing">printing</span> <span word="industry">industry</span>—<span word="printers">printers</span> <span word="became">became</span> <span word="much">much</span> <span word="cheaper">cheaper</span>. <span word="For">For</span> <span word="example">example</span>, 10 <span word="years">years</span> <span word="ago">ago</span> <span word="a">a</span> <span word="desktop">desktop</span> 3<span word="D">D</span> <span word="printer">printer</span> <span word="might">might</span> <span word="have">have</span> <span word="cost">cost</span> ￡20, 000, <span word="while">while</span> <span word="now">now</span> <span word="they">they</span> <span word="cost">cost</span> <span word="only">only</span> <span word="about">about</span> ￡1, 000, <span word="according">according</span> <span word="to">to</span> <span word="the">the</span> <span word="BBC">BBC</span>.</p>
页:
[1]