四级模拟1

Part V Translation (5 minutes)

Directions: Complete the sentences by translating into English the Chinese given in brackets. 51. Don’t get involved in love games too early. _______ (要是……该怎么办) you suffer from failure in love?

52. That car ___________________(尽给我添麻烦) ever since I bought it.

53. _______________________ (努力不吸入) the vapor, Thomas turned his head.

54. But for his wife’s encouragement, he _____________ (就不能发明那个机器).

55. It _________________________ (直的批准) that we can start the job.

Part IV Cloze (15 minutes)

Two million years ago, just as the Earth’s primitive apemen were evolving into big-brained humans, a pair of supernovae explosions occurred near Earth. Our planet was buffeted (冲击) with blasts of radiation —with 31 effects. “These supernovae would 32 away our protective ozone layer,” said Dr Narciso Benitez of Johns Hopkins University. Earth lost its protection 33 ultraviolet light.

mutational (突变) damage to animals’ DNA would have occurred. New species could have emerged 34 . It is possible that Homo sapiens (智人) may have been one of these.

The likely 35 of a supernova’s radiation led scientist s in the past 36 that one may have affected 37 on Earth. Benitez now believes that 38 two supernovae occurred near Earth two million years ago:

The first would have blasted space free 39 interstellar particles; and would have struck Earth at full force, 40 its ozone layer.

Observations of space around our Sun have revealed that, 41 the rest of the galaxy, space near us has little interstellar gas in it. “ 42 it is missing much of i ts dust and gas — just as if a supernova 43 it out,” added Maíz-Apellániz. 44 , our tiny corner of the galaxy appears to have been swept clean by a supernova brush about two million years ago; and intriguingly, at just this time, a set of extinctions — known as the Pliocene (上新世) / Pleistocene (更新世) extinctions — is also known 45 .

It was also around this time that mankind’s direct ancestor, Homo erectus, the species 46 to be the first true human being, appeared in Africa and Asia after 47 more primitive ap e-like creatures. These beings may have been some of the lucky few who were able to 48 advantage of conditions in

these hazardous, radioactive 49 . This triumph thanks to this celestial (上天的) 50 , however.

31. A) devastate B) devastating C) devastated D) devastation

32. A) blow B) have blown C) blew D) be blowing

33. A) in B) on C) against D) to

34. A) as a result of B) as a result C) the end result D) from the result of

35. A) compact B) contact C) intact D) impact

36. A) speculate B) speculating C) to speculate D) speculated

38. A) at least B) at most C) at first D) at last

39. A) with B) without C) at D) of

40. A) destroyed B) to destroy C) destroying D) destroy

41. A) unlikely B) likely C) unlike D) dislike

42. A) Definitely B) Obviously C) Eventually D) Essentially

43. A) would clean B) cleaned C) have cleaned D) had cleaned

44. A) In word B) In words C) In other words D) In a word

45. A) to occur B) to have occurred C) occurring D) have occurred