2015年职称英语理工类AB级阅读理解模拟试题(四)
<p> <span word="Black">Black</span> <span word="holes">holes</span> <span word="lead">lead</span> <span word="stars">stars</span> <span word="to">to</span> <span word="self">self</span>-<span word="destruct">destruct</span></p><p> <span word="Scientists">Scientists</span> <span word="have">have</span> <span word="long">long</span> <span word="understood">understood</span> <span word="that">that</span> <span word="supermasvive">supermasvive</span> <span word="black">black</span> <span word="holes">holes</span> <span word="weighing">weighing</span>. <span word="Millions">Millions</span> <span word="or">or</span> <span word="billions">billions</span> <span word="of">of</span> <span word="suns">suns</span> <span word="can">can</span> <span word="tear">tear</span> <span word="apart">apart</span> <span word="stars">stars</span> <span word="that">that</span> <span word="come">come</span> <span word="too">too</span> <span word="close">close</span>. <span word="The">The</span> <span word="black">black</span> <span word="holegravity">holegravity</span> <span word="pulls">pulls</span> <span word="harder">harder</span> <span word="on">on</span> <span word="the">the</span> <span word="neatest">neatest</span> <span word="part">part</span> <span word="of">of</span> <span word="the">the</span> <span word="star">star</span>, <span word="an">an</span> <span word="imbalance">imbalance</span> <span word="that">that</span> <span word="pulls">pulls</span> <span word="the">the</span> <span word="star">star</span> <span word="apart">apart</span> <span word="over">over</span> <span word="a">a</span> <span word="period">period</span> <span word="of">of</span> <span word="minutes">minutes</span> <span word="or">or</span> <span word="hours">hours</span>, <span word="once">once</span> <span word="it">it</span> <span word="gets">gets</span> <span word="close">close</span> <span word="enough">enough</span>.</p><p> <span word="When">When</span> <span word="the">the</span> <span word="star">star</span> <span word="gets">gets</span> <span word="Close">Close</span> <span word="enough">enough</span>, <span word="the">the</span> <span word="uneven">uneven</span> <span word="forces">forces</span> <span word="flatten">flatten</span> <span word="it">it</span> <span word="into">into</span> <span word="a">a</span> <span word="pancake">pancake</span> <span word="shape">shape</span>. <span word="Some">Some</span> <span word="previous">previous</span> <span word="studies">studies</span> <span word="had">had</span> <span word="suggested">suggested</span> <span word="this">this</span> <span word="flattening">flattening</span> <span word="would">would</span> <span word="increase">increase</span> <span word="the">the</span> <span word="density">density</span> <span word="and">and</span> <span word="temperature">temperature</span> <span word="inside">inside</span> <span word="the">the</span> <span word="star">star</span> <span word="enough">enough</span> <span word="to">to</span> <span word="trigger">trigger</span> <span word="intense">intense</span> <span word="nuclear">nuclear</span> <span word="reactions">reactions</span> <span word="that">that</span> <span word="would">would</span> <span word="tear">tear</span> <span word="it">it</span> <span word="apart">apart</span>. <span word="But">But</span> <span word="other">other</span> <span word="studies">studies</span> <span word="had">had</span> <span word="suggested">suggested</span> <span word="that">that</span> <span word="the">the</span> <span word="picture">picture</span> <span word="would">would</span> <span word="he">he</span> <span word="complicated">complicated</span> <span word="by">by</span> <span word="shock">shock</span> <span word="waves">waves</span> <span word="generated">generated</span> <span word="during">during</span> <span word="the">the</span> <span word="flattening">flattening</span> <span word="process">process</span> <span word="and">and</span> <span word="that">that</span> <span word="not">not</span> <span word="nuclear">nuclear</span> <span word="explosion">explosion</span> <span word="should">should</span> <span word="occur">occur</span>.</p><p> <span word="The">The</span> <span word="devouring">devouring</span> <span word="of">of</span> <span word="stars">stars</span> <span word="by">by</span> <span word="black">black</span> <span word="holes">holes</span> <span word="may">may</span> <span word="already">already</span> <span word="have">have</span> <span word="been">been</span> <span word="observed">observed</span>, <span word="although">although</span> <span word="at">at</span> <span word="a">a</span> <span word="much">much</span> <span word="later">later</span> <span word="stage">stage</span>. <span word="It">It</span> <span word="is">is</span> <span word="thought">thought</span> <span word="that">that</span> <span word="several">several</span> <span word="months">months</span> <span word="after">after</span> <span word="the">the</span> <span word="event">event</span> <span word="that">that</span> <span word="rips">rips</span> <span word="the">the</span> <span word="star">star</span> <span word="apart">apart</span>, <span word="its">its</span> <span word="matter">matter</span> <span word="starts">starts</span> <span word="swirling">swirling</span> <span word="into">into</span> <span word="the">the</span> <span word="hole">hole</span> <span word="itself">itself</span>. <span word="It">It</span> <span word="heats">heats</span> <span word="up">up</span> <span word="as">as</span> <span word="it">it</span> <span word="does">does</span> <span word="so">so</span>, <span word="releasing">releasing</span> <span word="ultraviolet">ultraviolet</span> <span word="light">light</span> <span word="and">and</span> <span word="X">X</span>-<span word="rays">rays</span>.</p><p> <span word="Brassart">Brassart</span> <span word="aggress">aggress</span>. <span word="Perhaps">Perhaps</span> <span word="it">it</span> <span word="can">can</span> <span word="be">be</span> <span word="observed">observed</span> <span word="in">in</span> <span word="the">the</span> <span word="X">X</span>-<span word="rays">rays</span> <span word="and">and</span> <span word="gamma">gamma</span> <span word="rays">rays</span>, <span word="but">but</span> <span word="its">its</span> <span word="something">something</span> <span word="that">that</span> <span word="needs">needs</span> <span word="to">to</span> <span word="be">be</span> <span word="more">more</span> <span word="studied">studied</span>,<span word="he">he</span> <span word="says">says</span>. <span word="Supernova">Supernova</span> <span word="researcher">researcher</span> <span word="Chris">Chris</span> <span word="Fryer">Fryer</span> <span word="of">of</span> <span word="the">the</span> <span word="Los">Los</span> <span word="Alamos">Alamos</span> <span word="National">National</span> <span word="Laboratory">Laboratory</span> <span word="in">in</span> <span word="Los">Los</span> <span word="Almos">Almos</span>, <span word="New">New</span> <span word="Mexico">Mexico</span>, <span word="US">US</span>, <span word="says">says</span> <span word="the">the</span> <span word="deaths">deaths</span> <span word="of">of</span> <span word="these">these</span> <span word="stars">stars</span> <span word="are">are</span> <span word="difficult">difficult</span> <span word="to">to</span> <span word="simulate">simulate</span>, <span word="and">and</span> <span word="he">he</span> <span word="is">is</span> <span word="not">not</span> <span word="sure">sure</span> <span word="whether">whether</span> <span word="the">the</span> <span word="researchers">researchers</span> <span word="have">have</span> <span word="proven">proven</span> <span word="their">their</span> <span word="case">case</span> <span word="they">they</span> <span word="exploded">exploded</span> <span word="in">in</span> <span word="the">the</span> <span word="process">process</span>.</p>
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