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I. 1.b 2.c 3.a 4.c 5.d II. 1.inadequate 2.astronomers 3.density 4.shrink 5.intense 6.boundary 7.theory 8.convince 9.invisible 10.speculation III. 1.density 2.observation 3.speculation 4.massiveness 5.region 6.graviation 7.relativity 8.basis 9.evidence 10.endlessness IV. with; his; if; so; paper; out; the; better V. 1.Astronomers have not yet fully answered the question of what black holes are. 2.It is said that a black hole can swallow up everything such as stars around it. 3.The study of black holes is just beginning.Speculations about them are endless. 4.Scientists can not tell what happens inside a black hole. 5.If we get to know something about them, black holes will not be that frightful. I. 1.a. exploded b.explosion c.explosive 2.a.dense b.densely c.density 3.a.measurable b.measurement c.measured 4.a.basis b.basic c.based d.basically II. 1.implication 2.gravity 3.boundary 4.interchangeable 5.explode 6.galaxy 7.convincing 8.speculation 9.shrinks 10.sucking III. 1.A block hole exerts a strong gravitational pull. 2.His company collapsed owing to mismanagement. 3.Quite a few staellites were launched in the 80's in our country. 4.Has the medicine begun to operate? 5.He was swallowed up in darkness.(or Darkness swallowed him up.) I. 1.T 2.T 3.T 4.T 5.F 6.F 7.F 8.F 9.F 10.T II. 1.planets; orbit 2.suns 3.life; vegetation 4.satellite; sun 5.very large separate; lesser 6.one part; another part 7.nature; characteristics 8.plateaus; deserts; plains 9.religion; government; education; social behaviour 10.circumstances I. 1.cloudless 2.above all 3.concerned 4.largely 5.glitter 6.As a rule 7.unlikely 8.thrilling 9.whereas 10.revolves |
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