《2025年节节高大象出版社八年级英语上册仁爱版》

三、完形填空 (15 小题,每小题 1 分,共 15 分)
先通读短文,掌握其大意,然后从 A、B、C、D 四个选项中选出一个可以填入相应空白处的最佳答案。
Is there another earth in the universe? Are there "humans" on that earth? In our eyes,the universe is always mysterious (神秘的). That's _41_ we have always explored the universe for thousands of years. Though we failed many times,we _42_ stopped.
In many science-fiction movies,men travel to far away stars and _43_ fight with aliens (外星人). But are there aliens in the universe? Many scientists believe the answer is yes—the universe is so big _44_. So they have been searching outer space for years. They hope to _45_ signs of aliens' life.
Radio telescopes are used to search the sky by them. They have worked hard for over half a century,but so far they have found _46_. Some scientists suggested aliens might not want to contact (接触) us but could answer a message we send. So they sent radio signals _47_ the universe. They hope one day they would be _48_ by alien technology. These scientists want to prove that we are not _49_ in the universe.
But what should we do _50_ the "alien phone" rings one day? Should we answer it? Stephen Hawking,the famous British physicist,thought it could be _51_ to contact aliens. He said that the main _52_ of aliens visiting our solar system could be searching our resources. But other scientists think we have no _53_ to worry. David Morrison,a NASA scientist,said,"If an alien radio signal reaches us from a planet thousands of light-years away,then they almost surely have _54_ all the problems we still have including the short age of resources. Since they are much cleverer than us,why do they _55_ us?"
So far,scientists have found nearly 5,800 exoplanets (外部行星) outside of our solar system. It seems that among these exoplanets there are similar planets like Earth with smart forms of life on them.
(B)41. A. how
B. why
C. when
D. where
(A)42. A. never
B. ever
C. often
D. always
(D)43. A. still
B. yet
C. already
D. even
(C)44. A. at last
B. for sure
C. after all
D. of course
(A)45. A. find
B. ask
C. explain
D. discuss
(D)46. A. something
B. anything
C. everything
D. nothing
(C)47. A. up
B. down
C. into
D. onto
(B)48. A. turned up
B. picked up
C. cut up
D. eaten up
(A)49. A. alone
B. quiet
C. awful
D. strange
(C)50. A. before
B. because
C. if
D. until
(B)51. A. exciting
B. dangerous
C. difficult
D. necessary
(D)52. A. result
B. course
C. problem
D. purpose
(C)53. A. time
B. way
C. need
D. chance
(A)54. A. solved
B. met
C. known
D. listed
(B)55. A. help
B. hurt
C. leave
D. save

答案： 41—45 BADCA 46—50 DCBAC 51—55 BDCAB