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With fifteen years Britain and other nations should be well on with the building of huge industrial complexes for the recycling of waste. The word “rubbish” could lose its meaning because everything which goes into the dumps would be made into something useful. Even the most dangerous and unpleasant wastes would provide energy if nothing else.The latest project is to take a city of around half a million inhabitants and discover exactly what raw materials go into it and what go out. The aim is to find out how much of these raw materials could be provided if a plant for recycling waste were built just outside the city. This plant would recycle not only metal such as steel, lead and copper, but also paper and rubber as well.Another new project is being setup to discover the best ways of sorting and separating the rubbish. When this project is complete, the rubbish will be processed like this: First, it will pass through sharp metal bars which will tear open the plastic bags in which rubbish is usually packed; then it will pass through a powerful fan to separate the lightest elements from the heavy solids; after that founders and rollers will break up everything that can be broken. Finally, the rubbish will pass under magnets, which will remove the bits of iron and steel; the rubber and plastic will then be sorted out in the final stage.The first full-scale giant recycling plants are perhaps fifteen years away. Indeed, with the growing cost of transporting rubbish to more distant dumps, some big cities will be forced to build their own recycling plants before long.51. The phrase “should be well on with...” (Para.1) most probably means .52. What is NOT mentioned as a part of the recycling process described in paragraph 3?53. What’s the main reason for big cities to build their own recycling plants?54. The first full-scale huge recycling plants .55. The passage is mainly about __.

What kind of human being will the future spaceman be? Will he need bones of steel and powerful muscles to resist rocket thrust, the lungs of a glass blower, a mighty heart, the calmness of an acrobat, unconscious death urges, or a schizophrenic (患精神分裂症的) drove toward isolation? Popular ideas of a spaceman tend to be funny composites of fiction and fact.A more realistic portrait emerges from the young science of bioastronautics, the newest and strangest of medical disciplines. The astronaut may be described as a young man of high intelligence who is normal to an abnormal degree. On earth he may well have been a high jumper, or acrobat. He must be highly motivated, carefully trained, and he must want to come back.His heart and lungs must be healthy but need not be exceptionally developed, for his cabin will be pressurized. Huge muscles may actually be disadvantageous, for he will have almost no way to get exercise, and he will find that the strength of a year-old child is adequate in the weightlessness of space. A firm body and a short, strong neck will help him to withstand the tremendous forces encountered at take-off. Most important physically, his digestive system must be one that will not be upset by weightlessness; he must not be subject to motion sickness.46. All the following are popular beliefs about the future spaceman EXCEPT that .47. Which of the following is NOT considered by the author as a more realistic image of the future spaceman?48. Bioastronautics is mostly related to .49. “normal to an abnormal degree” (Para. 2) means .50. To the future spaceman, what is most physically important is that .

Statuses are marvelous human inventions that enable us to get along with one another and to determine where we “fit” in society. As we go about our everyday lives, we mentally attempt to place people in terms of their statuses. For example, we must judge whether the person in the library is a reader or a librarian, whether the telephone caller is a friend or a salesman, whether the unfamiliar person on our property is a thief or a meter reader, and so on. The statuses we assume often vary with the people we encounter and change throughout life. Most of us can, at very high speed, assume the statuses that various situations require. Much of social interaction consists of identifying and selecting among appropriate statuses and allowing other people to assume their statuses in relation to us. This means that we fit our actions to those of other people based on a constant mental process of appraisal and interpretation. Although some of us find the task more difficult than others, most of us perform it rather effortlessly. A status has been compared to ready-made clothes. Within certain limits the buyer choose style and fabric. But an American is not free to choose the costume of a Chinese peasant or that of a Hindu prince. We must choose from among the clothing presented by fit, as well as by our pocketbook. Having made a choice from minor adjustments, we tend to be limited to what the stores choice among them is limited. 41. In the first paragraph, the writer tells us that statuses can help us . 42. According to the writer, people often assume different statuses . 43. The word “appraisal” most probably means .44. According to the last sentence of the second paragraph, the pronoun “it” refers to “”.45. By saying that “an American is not free to choose the costume of a Chinese peasant or that of a Hindu prince”, the writer means __.

Human facial expressions differ from those of animals in the degree to which they can be ______ controlled and modified.

You said the books were on the shelf, but ______ there.

Harvard University and MIT are ______ the fourth and fifth largest employers in the area.

I got caught in the traffic; ______ I would have been here sooner.

The critics considered only the undesirable qualities in the artist’s work, while ignoring or ______ the more desirable ones.

The news, though not wholly bad, was so ______ that I could no longer concentrate on my work.

I can’t find my gloves. I must have ______ them on the bus when I came home from school.

Mr. White is over eighty, but he still ______ his position as chairman of the board and will not retire.

If reading is to accomplish anything than ______ time, it must be active.

Patrick has never learned a foreign language, ______.

The manager thought ______ the problem for three days before he finally made the decision.

Mary has just bought herself ______ dress.

Sarah put in a special ______ for an extra day’s holiday so that she could attend her friend’s wedding.

Paul was so ______ about his baldness that he wore a hat, whether it was winter or summer.

The decision ______, the next problem was how to make a good plan.

Nowhere else along the coast ______ such shallow water so far from land.

John’s outstanding performance in the competition proved that he was a ______ winner.

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