2017届（全国卷地区）高考英语一轮复习学生手册：必修3 Unit 4《Astronomy：the science of the stars》听课手册
<p> <span word="Unit">Unit</span> 4 <span word="Astronomy">Astronomy</span>：<span word="the">the</span> <span word="science">science</span> <span word="of">of</span> <span word="the">the</span> <span word="stars">stars</span></p><p> 你接受了一项写作任务，要为英语校报写一篇有关<span word="UFO">UFO</span>的文章。</p><p> 请根据以下信息，简要介绍<span word="UFO">UFO</span>。</p><p> 名称简介 <span word="UFO">UFO</span>是<span word="Unidentified">Unidentified</span> <span word="Flying">Flying</span> <span word="Object">Object</span> 的缩写</p><p> 世界十大未解之谜之一</p><p> 有关事件 首次目击报告是在1878年的美国</p><p> 从那以后目击报告层出不穷，有许多是虚假的</p><p> 人们的看法 来自其他行星的太空飞船</p><p> 一种自然现象</p><p> 外星人</p><p> 研究状况 三分之一的国家对<span word="UFO">UFO</span>展开研究</p><p> 大量关于<span word="UFO">UFO</span>的图书和期刊出版</p><p> 有些大学开设<span word="UFO">UFO</span>课程</p><p> 外星人 <span word="alien">alien</span></p><p> 精彩美文 </p><p> <span word="UFO">UFO</span>, <span word="which">which</span> <span word="is">is</span> <span word="short">short</span> <span word="for">for</span> <span word="Unidentified">Unidentified</span> <span word="Flying">Flying</span> <span word="Object">Object</span>, <span word="has">has</span> <span word="long">long</span> <span word="been">been</span> <span word="regarded">regarded</span> <span word="as">as</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="top">top</span> 10 <span word="unsolved">unsolved</span> <span word="mysteries">mysteries</span> <span word="in">in</span> <span word="the">the</span> <span word="world">world</span>. <span word="The">The</span> <span word="first">first</span> <span word="UFO">UFO</span> <span word="sighting">sighting</span> <span word="was">was</span> <span word="reported">reported</span> <span word="to">to</span> <span word="have">have</span> <span word="happened">happened</span> <span word="in">in</span> <span word="America">America</span> <span word="in">in</span> 1878. <span word="Since">Since</span> <span word="then">then</span>, <span word="numerous">numerous</span> <span word="sightings">sightings</span> <span word="have">have</span> <span word="been">been</span> <span word="reported">reported</span> <span word="all">all</span> <span word="over">over</span> <span word="the">the</span> <span word="world">world</span>, <span word="many">many</span> <span word="of">of</span> <span word="which">which</span> <span word="turned">turned</span> <span word="out">out</span> <span word="to">to</span> <span word="be">be</span> <span word="false">false</span>. <span word="Some">Some</span> <span word="people">people</span> <span word="think">think</span> <span word="UFOs">UFOs</span> <span word="are">are</span> <span word="spaceships">spaceships</span> <span word="from">from</span> <span word="other">other</span> <span word="planets">planets</span>, <span word="others">others</span> <span word="believe">believe</span> <span word="that">that</span> <span word="they">they</span>'<span word="re">re</span> <span word="just">just</span> <span word="a">a</span> <span word="kind">kind</span> <span word="of">of</span> <span word="natural">natural</span> <span word="phenomenon">phenomenon</span> <span word="and">and</span> <span word="still">still</span> <span word="others">others</span> <span word="guess">guess</span> <span word="they">they</span>'<span word="re">re</span> <span word="aliens">aliens</span>. <span word="Now">Now</span> <span word="about">about</span> <span word="one">one</span> <span word="third">third</span> <span word="of">of</span> <span word="the">the</span> <span word="countries">countries</span> <span word="in">in</span> <span word="the">the</span> <span word="world">world</span> <span word="are">are</span> <span word="doing">doing</span> <span word="research">research</span> <span word="on">on</span> <span word="UFOs">UFOs</span>, <span word="about">about</span> <span word="which">which</span> <span word="many">many</span> <span word="books">books</span> <span word="and">and</span> <span word="journals">journals</span> <span word="have">have</span> <span word="been">been</span> <span word="published">published</span>, <span word="and">and</span> <span word="in">in</span> <span word="some">some</span> <span word="universities">universities</span> <span word="courses">courses</span> <span word="are">are</span> <span word="even">even</span> <span word="set">set</span> <span word="up">up</span> <span word="to">to</span> <span word="study">study</span> <span word="UFOs">UFOs</span>.</p>
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