职称英语理工类C级阅读理解的精选练习题(2)
<p> <span word="Eta">Eta</span> <span word="Carinae">Carinae</span> <span word="As">As</span> <span word="possibly">possibly</span> <span word="the">the</span> <span word="galaxys">galaxys</span> <span word="most">most</span> <span word="massive">massive</span> <span word="star">star</span>, <span word="Eta">Eta</span> <span word="Carinae">Carinae</span> <span word="is">is</span> <span word="now">now</span> <span word="engaging">engaging</span> <span word="in">in</span> <span word="some">some</span> <span word="very">very</span> <span word="unusual">unusual</span> <span word="behaviour">behaviour</span>. <span word="Australian">Australian</span> <span word="astronomers">astronomers</span>, <span word="being">being</span> <span word="in">in</span> <span word="the">the</span> <span word="Southern">Southern</span> <span word="Hemisphere">Hemisphere</span> , <span word="are">are</span> <span word="able">able</span> <span word="to">to</span> <span word="observe">observe</span> <span word="it">it</span> <span word="clearly">clearly</span>. <span word="While">While</span> <span word="it">it</span> <span word="is">is</span> <span word="not">not</span> <span word="unusual">unusual</span> <span word="for">for</span> <span word="stars">stars</span> <span word="to">to</span> <span word="vary">vary</span> <span word="in">in</span> <span word="brightness">brightness</span>, <span word="the">the</span> <span word="period">period</span> <span word="is">is</span> <span word="usually">usually</span> <span word="much">much</span> <span word="shorter">shorter</span>. <span word="Since">Since</span> 1992 <span word="it">it</span> <span word="has">has</span> <span word="become">become</span> <span word="four">four</span> <span word="times">times</span> <span word="brighter">brighter</span>, <span word="and">and</span> <span word="then">then</span> <span word="last">last</span> <span word="year">year</span> <span word="it">it</span> <span word="began">began</span> <span word="to">to</span> <span word="drop">drop</span> <span word="dramatically">dramatically</span>, <span word="he">he</span> <span word="said">said</span>. <span word="Eta">Eta</span> <span word="Carinae">Carinae</span> <span word="is">is</span> <span word="of">of</span> <span word="particular">particular</span> <span word="interest">interest</span> <span word="to">to</span> <span word="astronomers">astronomers</span> <span word="because">because</span> <span word="it">it</span> <span word="seems">seems</span> <span word="to">to</span> <span word="be">be</span> <span word="in">in</span> <span word="its">its</span> <span word="death">death</span> <span word="throes">throes</span>. <span word="Being">Being</span> <span word="so">so</span> <span word="large">large</span> <span word="it">it</span> <span word="will">will</span> <span word="end">end</span> <span word="up">up</span> <span word="as">as</span> <span word="a">a</span> <span word="supernova">supernova</span> . <span word="There">There</span> <span word="has">has</span> <span word="not">not</span> <span word="been">been</span> <span word="a">a</span> <span word="supernova">supernova</span> <span word="in">in</span> <span word="our">our</span> <span word="galaxy">galaxy</span> <span word="since">since</span> <span word="the">the</span> <span word="invention">invention</span> <span word="of">of</span> <span word="the">the</span> <span word="telescope">telescope</span>. <span word="While">While</span> <span word="a">a</span> 1987 <span word="explosion">explosion</span> <span word="in">in</span> <span word="a">a</span> <span word="nearby">nearby</span> <span word="galaxy">galaxy</span> <span word="gave">gave</span> <span word="astronomers">astronomers</span> <span word="plenty">plenty</span> <span word="of">of</span> <span word="valuable">valuable</span> <span word="data">data</span>, <span word="they">they</span> <span word="are">are</span> <span word="hungry">hungry</span> <span word="for">for</span> <span word="an">an</span> <span word="even">even</span> <span word="closer">closer</span> <span word="look">look</span>. 31. <span word="Eta">Eta</span> <span word="Carinae">Carinae</span> <span word="is">is</span> <span word="now">now</span> <span word="engaging">engaging</span> <span word="in">in</span> <span word="C">C</span>. <span word="some">some</span> <span word="very">very</span> <span word="frightening">frightening</span> <span word="behaviour">behaviour</span>. <span word="D">D</span>. <span word="some">some</span> <span word="very">very</span> <span word="strange">strange</span> <span word="behaviour">behaviour</span> <span word="A">A</span>. <span word="over">over</span> <span word="which">which</span> <span word="star">star</span> <span word="vary">vary</span> <span word="in">in</span> <span word="brightness">brightness</span> <span word="C">C</span>. <span word="Eta">Eta</span> <span word="carinae">carinae</span> <span word="takes">takes</span> <span word="to">to</span> <span word="become">become</span> <span word="a">a</span> <span word="supernova">supernova</span>. 33. <span word="Eta">Eta</span> <span word="Carinae">Carinae</span> <span word="is">is</span> <span word="hard">hard</span> <span word="to">to</span> <span word="observe">observe</span> <span word="because">because</span> <span word="C">C</span>. <span word="the">the</span> <span word="binoculars">binoculars</span> <span word="are">are</span> <span word="not">not</span> <span word="powerful">powerful</span> <span word="enough">enough</span>.<span word="D">D</span>. <span word="it">it</span> <span word="does">does</span> <span word="not">not</span> <span word="send">send</span> <span word="out">out</span> <span word="infrared">infrared</span> <span word="light">light</span>. <span word="A">A</span>. <span word="it">it</span> <span word="is">is</span> <span word="in">in</span> <span word="its">its</span> <span word="final">final</span> <span word="stage">stage</span>. <span word="B">B</span>. <span word="it">it</span> <span word="is">is</span> <span word="a">a</span> <span word="supernova">supernova</span>. 35. <span word="Which">Which</span> <span word="of">of</span> <span word="the">the</span> <span word="following">following</span> <span word="statements">statements</span> <span word="about">about</span> <span word="Eta">Eta</span> <span word="Carinae">Carinae</span> <span word="is">is</span> <span word="NOT">NOT</span> <span word="true">true</span>? <span word="B">B</span>. <span word="It">It</span> <span word="can">can</span> <span word="be">be</span> <span word="seen">seen</span> <span word="only">only</span> <span word="through">through</span> <span word="binoculars">binoculars</span>. <span word="D">D</span>. <span word="Its">Its</span> <span word="ultraviolet">ultraviolet</span> <span word="laser">laser</span> <span word="is">is</span> <span word="brighter">brighter</span> <span word="than">than</span> <span word="that">that</span> <span word="of">of</span> <span word="the">the</span> <span word="Sun">Sun</span>.</p><p> </p>
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