8.In August 1977, a satellite was____to gather data about the black holes in the Milky way.
　　[A] posted
　　[B] delivered
　　[C] launched
　　[D] transmitted
　　9.The terms we would normally use to describe a scientific phenomenon are____here.
　　[A] inadequate
　　[B] invisible
　　[C] intense
　　[D] individual
　　10.We know nothing about events which happen once objects pass this boundary, But____,matter must behave very differently inside the hole.
　　[A] in addition
　　[B] in person
　　[C] in detail
　　[D] in theory
　�、�.C-E Translation
　　1.這個收縮的過程如此強烈，以至于黑洞產生了。
　　2.直到最近天文學家們才開始研究黑洞。
　　3.但是從理論上說，物質在黑洞里的行為一定非常不同。
　　4.黑洞最強有力的證據來自對雙星系的研究。
　　5.有一天也許人類也會遭此命運。
　　單元自測答案 Unit 2
　�、�.Word Spelling
　　1.density 2.collapse 3.boundary
　　4.constant 5.basis 6.launch
　　7.twin 8.companion 9.mankind
　　10.speculation 11.swallow 12.inadequate
　　13.matter 14.circumstance 15.occur
　　16.intense 17.evidence 18.invisible
　　19.astronaut 20.tropical
　�、�.Word Form
　　1.were reported 2.having 3.made
　　4.believed 5.is being pulled 6.swallowing
　　7.convincing 8.totally 9.consists
　　10.coloured
　�、�.Vocabulary and Structure
　　1.B 2.D 3.A 4.A 5.C
　　6.D 7.B 8.C 9.A 10.D
　�、�.C-E Translation
　　1.This process of shrinking is so intense that a black hole results.
　　2.It is only recently/It is not until recently that astronomers have begun specific research into black holes.