I'm examining the composition he has just finished ____ the possible mistakes in it.

A. correcting 　 B. to correct 　　C. corrected 　　D. correct

People do not analyze every problem they meet. Sometimes they try to remember a solution from the last time they had a 36 problem. They often accept the opinions or ideas of other people. Other times they begin to act without 37 ; they try to find a solution by trial and error(反复试验). 　38 , when all of these methods 39 , the person with a problem has to start analyzing. There are six 40 in analyzing a problem.

41 ，the person must recognize that there is a problem. For example, Sam’s bicycle is broken, and he cannot ride it to class as he usually does. Sam must 42 that there is a problem with the bicycle.

Next, the person must find out the problem. Before Sam can repair his bicycle, he must know why it does not work. For example, he must 43 the parts that are wrong.

Now the person must look for 44 that will make the problem clearer and lead to 45 solutions. For example, suppose Sam decides that his bicycle does not work because there is something wrong with the brakes. 　46 , he can look into his bicycle repair book and read about brakes, talk to his friends at the bike shop, or look at his brakes carefully.

After 47 the problem, the person should have 48 suggestions for a possible solution. Take Sam as an example 49 , his suggestions might be: tighten or loosen the brakes; buy new brakes and change the old ones.

In the end, one 50 seems to be the solution to the problem. Sometimes the

51 idea comes quite 52 because the thinker suddenly sees something new or sees something in a different way. Sam, for example, suddenly sees there is a piece of chewing gum (口香糖) stuck to a brake. He 53 hits on the solution to his problem: he must 54 the brake.

Finally the solution is 55 . Sam does it and finds his bicycle works perfectly. In short he has solved the problem.

36. A. serious 　　　　　　 B. usual　　　　　　　　 C. similar　　　　　　　　　　 D. common

37. A. searching　　　　　 B. thinking　　　　　　 C. finding　　　　　　　　　　 D. looking

38. A. Besides　　　　　　　B. Instead　　　　　　　C. Otherwise　　　　　　　 D. However

39. A. fail　　　　　　　　　　 B. work　　　　　　　　 C. change　　　　　　　　　　D. develop

40. A. ways　　　　　　　　　B. conditions　　　　 C. stages　　　　　　　　　　　D. orders

41. A. First　　　　　　　　　 B. Usually　　　　　　 C. In general　　　　　　　　 D. Most importantly

42. A. explain　　　　　　　 B. prove　　　　　　　 C. show　　　　　　　　　　　　D. see

43. A. check　　　　　　　　 B. determine　　　　 C. correct　　　　　　　　　　 D. recover

44. A. answers　　　　　　　B. skills　　　　　　　　 C. explanation　　　　　　 D. information

45. A. possible　　　　　　　 B. exact　　　　　　　　 C. real　　　　　　　　　　　　 D. special

46. A. In other words　　 B. Once in a while C. First of all　　　　　　　D. At this time

47. A. discussing　　　　　　 B. settling down　　　C. comparing with　　　D. studying

48. A. extra　　　　　　　　　　 B. enough　　　　　　　 C. several　　　　　　　　　D. countless

49. A. secondly　　　　　　 B. again　　　　　　　　　 C. also　　　　　　　　　　　D. alone

50. A. suggestion　　　　　　 B. conclusion　　　　　 C. decision　　　　　　　　D. discovery

51. A. next　　　　　　　　　　　B. clear　　　　　　　　　 C. final　　　　　　　　　　　D. new

52. A. unexpectedly　　　　 B. late　　　　　　　　　　 C. clearly　　　　　　　　　D. often

53. A. fortunately　　　　　　 B. easily　　　　　　　　　 C. clearly　　　　　　　　 D. immediately

54. A. clean　　　　　　　　　 B. separate　　　　　　　　C. loosen　　　　　　　　 D. remove

55. A. recorded　　　　　　　B. completed　　　　　　 C. tested　　　　　　　　　 D. accepted

　　In 1961, scientist set up gigantic, sensitive instruments to collect radio waves from the far reaches of space, hoping to discover in them some mathematical pattern indicating that the waves were sent out by other intelligent beings. The first attempt failed, but someday the experiment may succeed.
　　What reason is there to think that we may actually detect intelligent life in outer space？To begin with, modern theories of the development of stars suggest that almost every star has some sort of family of planets. So any star like our own sun （and there are billions of such stars in the universe） is likely to have a planet situated at such a distance that it would receive about the same amount of radiation as the earth.
　　Furthermore, such a planet would probably have the same general composition as our planet; so, allowing a billion years or two or three, there would be a very good chance for life to develop, if current theories of the origin of life are correct.
　　But intelligent life？Life that has reached the stage of being able to send radio waves out into space in a deliberate pattern？Our own planet may have been in existence for five billion years and may have had life on it for two billion, but it is only in the last fifty years that intelligent life capable of sending radio waves into space has lived on earth. From this it might seem that even if there were no technical problems involved, the chance of receiving signals from any particular earth-type planet would be extremely small.
　　This does not mean that intelligent life at our level does not exist somewhere. There are such an unimaginable number of stars that, even at such miserable possibility, it seems certain that there are millions of intelligent life forms scattered through space. The only trouble is, none may be within easy distance of us. Perhaps none ever will be; perhaps the distances that separate us from our fellow “creatures” of this universe will forever remain too great to be conquered. And yet it is conceivable that someday we may come across one of them or, frighteningly, one of them may come across us. What would they be like, these outside-the-earth creatures？
1.What point is the author making by stating that almost every star has some sort of family of planets？
　　A. Sooner or later intelligent beings will be found on one of the stars.
　　B. There must be one or two of the planets on which there are no intelligent beings.
　　C. There are sufficient planets for there to be one that enjoys the same conditions as the earth does.
　　D. One or two billion years later intelligent beings will generate on those planets.
2.What is the main topic of the passage？
　　A. Some probable intelligent life forms on other planets.
　　B. Various stages undergone by the intelligent life on other planets.
　　C. Grounds for probable existence of intelligent life on other planets.
　　D. The possibility of intelligent life existing on our planet.
3.Which of the following can be inferred from the passage？
A. An encounter is probable between people from the earth and intelligent beings from another planet.
B. Though the first attempt failed, scientists did discover the radio waves sent out by other intelligent beings.
C. Other intelligent beings were able to send our radio waves into space well before the last fifty years.
D. It is certain that there are millions of intelligent beings scattered in space but only too far away.
4.According to the author, what is the difference between “we may come across one of them” and “one of them may come across us”？
A. The earth would be dangerously disadvantaged if it is sought after by possibly much more developed creatures.
B. It would prove that there are too many outside-the-earth creatures if “one of them comes across us”.
C. The history of the development of the earth would be proved to be shorter than that of “them” if “they” come across us.
D. it would prove that the distance in between is not so great as we think if “we come across one of them” someday.

(1) Mr. Brown (the motorist)
　　At about 9:20 p.m. on October 14th, I was driving along Market Road in the direction of Midwick. I wanted to go to Sturham to collect my wife, who had been visiting some friends. I prepared to turn into Sturham Road, which was on my right. In the distance, I saw the lights of a car moving towards me but it was a long way from me. I put out my hand to show that I was going to turn right. Then I started to turn slowly towards Sturham Road. Suddenly there was a loud noise on the passenger's (near) side of the car. I stopped the car and got out. A motorcycle had hit my car. The motorcyclist had been thrown over the car. He was injured, so I ran to a shop to phone for help.
　　(2) Mr. Smith (the injured motorcyclist)
　　On the evening of October 14th, I was going home along Market Road towards Newtown. I was riding my motorcycle. I was going slowly because some of the streetlights were out and the road was wet and slippery. Just before Sturham Road, a car suddenly drove right across my path. The driver did not flash his lights to give a warning. I could not turn in time, so I hit the side of the car. When I woke up, I was lying in a hospital in Market Road.
　　(3) Mr. Lee (another motorcyclist)
　　At about 9:10 p.m. on October 14th, I left my home in Midwick. Ten minutes later I was riding my motorcycle along Market Road. I was going to Newtown. There was a motorcycle about 40 metres in front of me. It was not going very quickly. The man on it was riding near the curb (路边) but I was near the center of the road. The motorcyclist in front of me tried to turn to his right but there was no time. He hit the car and was injured. There was no car going along in front of us or put by the road.
48．Which of these statements about the accident is probably correct?
　　A．Mr. Brown wrongly supposed that the lights of the two motorcycles were those of a car.
　　B．The lights of the car moving towards Mr. Brown made him unable to see.
　　C．Mr. Brown knocked down a motorcyclist on purpose.
　　D．The accident was caused by the carelessness of the first motorcyclist.
49．It seems probable from the statements that Mr. Brown__________.
　　A．gave no signal to show that he was turning right
　　B．did not give any signal until he was actually turning
　　C．failed to give a proper signal at that time
　　D．flashed his light to show that he was going to turn
50．We would expect to find that Mr. Brown's car was damaged on its________ side.
　　A．front    B．left    C．right    D．driver's

He is beginning _____ his mistakes.

A. correct　　　B. to correct  C. correcting　D. corrected