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[专八辅导] 专业八级改错练习题及答案解析(4)

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发表于 2012-8-14 11:29:10 | 显示全部楼层 |阅读模式
  What is a black hole? Well, it is difficult to answer the question,$ a) E$ [$ Y1 b7 X( y
  as the terms we would normally use to describe a scientific phenomenon __1__
7 |* D" _. v. G4 a  are adequate here. Astronomers and scientists think that a black hole is __2__- h$ s& B9 l+ r6 C7 o* c2 t) f) ?5 v
  a region of space which matter has fallen and from which nothing can __3__% q) o  E: }  ?( q& B, M- S6 s+ l
  escape—not even light. But we can’t see a black hole. A black hole __4__
. J% `4 z& \. y% }2 }9 a& Q  exerts a strong gravitational pull and yet it has no matter. It is only9 ~6 K4 Z& ~0 x1 z6 A& Z- {" O
  space—or thus we think. How can this happen? __5__
$ v$ j% p, l4 L7 _, P  The theory is that some stars explode when their density increases
: W4 A2 U3 E) G# o3 ~  to a particular point; they “collapse” and sometimes a supernova occurs.
: k! l1 e( O0 d& d: Q: T  The collapse of a star may produce a “White Dwarf” of a “neutronstar”—, B2 n+ }! U6 u- R$ x
  a star which matter is so dense that if continually shrinks by the force of __6___
- b. C9 E' h. F+ S* a7 c+ P- y  its own gravity. But if the star is very large, this process of shrinking may8 N4 |& D5 }9 j0 V9 X5 G  N# f' x. y
  be so intense that a black hole results in. Imagine the earth reduced to the __7__! o1 l# @* R: ]1 E! K  i7 Y4 x2 c
  size of a marble, but still having the same masses and a stronger __8__; P: t, e. u% `1 W6 _
  gravitational pull, and you have some ideas of the force of a black hole. __9__* p4 L% i/ m- Z8 O- S
  And no matter near the black hole is sucked in. __10__
2 v7 c4 e' n& t* r2 Q4 `  参考答案及解析:; f9 c$ b9 U  H# @
  supernova 名词,[天]超新星& _  V! R  |- J$ V
  1. 将as 改为since或者because。在表示原因的连接词中,只有as引导的原因状语从句不能位于主句之后,只能位于句首。% B5 [% V( a& o! `7 G8 i9 K
  2 .将adequate 改为inadequate,或者在are后加not。从逻辑上分析,因为我们拥有的科学术语“不充足”,所以才无法回答这个问题,所以用否定形式。/ o3 r4 t- d2 {8 W$ o7 r
  3. 在which 前加into。这是一个定语从句,意思是“黑洞是太空中物质可以掉进去的地方”,所以定语从句应该为“into which matter has fallen”。" z' P3 B* x4 W% y. _- ~
  4. 将but 改为 so。 上文已提到“连光都无法从黑洞中逃出”,所以我们根本无法看到黑洞。这里应该是因果关系,而不是转折关系。
' o! i% u8 d# H- S$ `" ^$ {  5 .将thus改为so。这句话的意思是“那只是空间—或者我们认为它只是空间”。so做 think 的宾语,thus 只能做连词,不能做宾语。
0 _% B6 A3 J! e) Q  S  6. 将which 改为whose。这个定语从句的意思是“它是一颗星,其密度非常大,由于自身的引力,它在不断地收缩”。matter 属于star,所以关系代词应该用whose。9 I! R* D4 w: ?% I
  7 .去掉in。result为不及物动词,意为“形成了”,而“result in sth。”意为“导致某结果”。
* C2 _1 J$ D/ r3 V; ~  8. 将masses 改为mass。mass 可指“大量的物质”,而“the masses”特指“劳动群众”,用在此处不妥。
/ W& }( v+ F+ d( c- J+ s3 H  9 .将ideas 改为idea。“idea”在表达“印象”时,为不可数名词,不可以用复数。  |/ X/ I; a; Q  s  o9 @
  10. 将no改为any。分析便知,任何在黑洞附近的东西都会被吸进去。
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