第三部分 阅读理解(共20题，每题2分，满分40分)

A

Visit Nashville, Tennessee, the capital of country music and the home of the Grand Ole Opry. Forty - day motor coach tour starts from Pittsburgh.
Departures (启程) August 23, September 13, September 27, October 11, October 25.
$ 185 per person based on double occupancy. Includes private motor coach from Pittsburgh, hotel rooms, reserved (预定) tickets for the Grand Ole Opry. Country Festival Friday and Saturday nights, sightseeing tour of Nashville, admissions to places of interest.
For information, free booklets, and reservations, call 4212 - 6060. Travel and Tours, 2245 Market Street, Pittsburgh, Pennsylvania 15219.14 - day advanced booking required. Visa and Master Card payment welcome.

56. Why is Nashville an interesting city to visit? Because it is________.
    A. easy to travel around
    B. famous for country music
    C. an old city D. a beautiful city
57. If you plan to join the tour on September 27, on what date should you reserve your ticket?
    A. August 27. B. October 13.
    C. September 13. D. September 26.
58. Visa and Master Card are most probably the names of _______.
    A. newspapers B. clubs
    C. telephone cards D. credit cards
59. The title that best expresses the main idea of the passage is________.
    A. Bus Tour of Nashville B. Tour of Pittsburgh
    C. Travel and Tour D. Free Traveling

B

Through a series of experiments an
American scientist has gained an understanding of the social structure of the most complex of ant societies. The ants examined are the only creatures other than man to have given up hunting and collecting for a completely agricultural way of life. In their underground nests they plant gardens on soils made from finely cut leaves. This is a complex operation requiring considerable division of labor. The workers of this type of ant can be divided into four groups according to size. Each of the groups performs a particular set of jobs.
The making and care of the gardens and the nursing of the young ants are done by the smallest workers. Slightly larger workers are responsible for cutting leaves to make them suitable for use in the gardens and for cleaning the nest. A third group of still larger ants do the construction work and collect fresh leaves from outside the nest. The largest are soldier ants, responsible for defending the nest.
To find out how good the various size - groups are at different tasks, the scientist measured the amount of work done by the ants against the amount of energy they used. He examined first the gathering and carrying of leaves. He selected one of the size groups, and then measured how efficiently these ants could find leaves and run back to the nest. Then he repeated the experiment for each of the other size groups. In this way he could see whether any group could do the job more efficiently than the group normally undertaking it.
The intermediate-sized (中等的) ants that normally perform this task proved to be the most efficient for their energy costs, but when the scientist examined the whole set of jobs performed by each group of ants, it appeared that some sizes of worker ants were not suited to the particular jobs they performed .

60. According to the passage, the ants______.
    A. grow something in their nests
    B. go hunting for a living
    C. cut leaves to make a fire
    D. do each of the jobs all together
61. It is observed that slightly larger ants perform more of the______.
    A. construction tasks B. defensive work
    C. household tasks D. dangerous work
62. The underlined word "good" means ______.
    A. co-operating B. efficient
    C. hardworking D. responsible
63. The experiments made by the scientist were based on ______.
    A. special methods B. scientific theories
    C. personal interests D. systematic observations

C

If you want to stay young, sit down and have a good think. This is the research finding of a team of Japanese doctors who say that most of our brains are not getting enough exerciseand as a result, we are aging unnecessarily soon.
Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age, and how the process of aging could be slowed down.
With a team of colleagues at Tokyo National University, he set about measuring brain volumes (容量) of a thousand people of different ages and jobs.
Computer technology enabled the researchers to get right measurements of the volume of the front and side sections of the brain, which relate to intellect and emotion, and determine the human character. Contraction (收缩) of the front and side parts as cells died was observed in some subjects in their thirties, but it was still not clear in some sixty and seventy-year-olds.
Matsuzawa concluded from his tests that there is a simple remedy (补救) to the contraction normally associated with ageusing the head.
The findings show in general terms that contraction of the brain begins sooner in people in the country than in towns. Those least at risk, says Matsuzawa, are lawyers, followed by university professors and doctors. White collar workers doing routine work in government offices are, however, as likely to have shrinking (萎缩) brains as farm workers, bus drivers and shop assistants.
Matsuzawa's findings show that thinking can prevent the brain from shrinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells need. "The best way to keep good blood circulation is through using the brain," he says, "Think hard and engage in conversation. Don't rely on pocket calculators."

64. The team of doctors wanted to find out ______.
    A. why certain people age sooner than others
    B. how to make people live much longer
    C. the size of certain people's brains
    D. the people with more intelligence
65. On what are their research findings based?
    A. A survey of farmers in northern Japan.
    B. Tests performed on a thousand old people.
    C. The study of brain volumes of different people.
    D. The latest development of computer technology.

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