大学英语三级课程学习指导资料（二）
D. an invisible world into which she guessed she might enter
9. According to the narrator, she owed her success in art to ________
A. the good education her parents gave her B. her ballet teacher
C. her inborn talent D. the support of her understanding and adventurous mother
10. The central idea of the passage is that .
A. parents should try to discover the natural gift in their children and help to develop it while they are young
B. the so-called good education parents give their children only drives them into the commonplace and deprives them of any chance of doing anything original
C. mothers should be heroic and adventurous D. ballet is no good as a form of dance
Fast Reading
Passage 3
1 Aging is the process of growing old. It occurs eventually in every living thing provided, of course, that an illness or accident does not kill it prematurely. The most familiar outward signs of aging may be seen in old people, such as the graying of the hair and the wrinkling of the skin. Signs of aging in a pet dog or cat include loss of playfulness and energy, a decline in hearing and eyesight, or even a slight graying of the coat. Plants age too, but the signs are much harder to detect.
2 Most body parts grow bigger and stronger, and function more efficiently during childhood. They reach their peak at the time of maturity, or early adulthood. After that, they begin to decline. Bones, for example, gradually become lighter and more brittle. In the aged, the joints between the bones also become rigid and more inflexible. This can make moving very painful.
3 All the major organs of the body show signs of aging. The brain, for example, works less efficiently, and even gets smaller in size. Thinking processes of all sorts are slowed down. Old people often have trouble in remembering recent events.
4 One of the most serious changes of old age occurs in the arteries, the blood vessels that lead from the heart. They become thickened and constricted, allowing less blood to flow to the rest of the body. This condition accounts, directly or indirectly, for many of the diseases of the aged. It may, for example, result in heart attack.
5 Aging is not a uniform process. Different parts of the body wear out at different rates. There are great differences among people in their rate of aging. Even the cells of the body differ in the way they age. The majority of cells are capable of reproducing themselves many times during the course of a lifetime. Nerve cells and muscle fibers can never be replaced once they wear out.
6 Gerontologists -- scientists who study the process of aging -- believe the wearing out of the body is controlled by a built-in biological time-clock. They are trying to discover how this clock works so that they can slow down the process. This could give man a longer life and a great number of productive years.
1. What is the main idea in the first paragraph?
A. Signs of aging are easier to detect in animals than in plants.
B. Aging occurs in every living thing after it has reached maturity.
C. The outward signs of aging may be seen in old people.
D. Not all signs of aging are visible.
2. When the brain begins to age ____.
A. eyesight will begin to decline too B. it becomes lighter
C. the thinking processes go on just as before D. memorization declines
3. "The arteries" refers to ____.
A. the paths along which blood flows to all parts of the body
B. the tubes carrying blood back to the heart
C. vessels that are thickened and constricted
D. such heart diseases as suffered by old people
4. Many of the diseases of old people are the result of ____.
A. lack of blood B. low blood pressure
C. the thickening of the blood vessels D. poor blood circulation
5. "Aging is not a uniform process" means that ____.
A. old people do not have the same outward signs of aging
B. not all people age at the same age C. the process of aging is slow
D. nerve cells and muscle fibers do not age simultaneously
6. Which of the statements about aging is false?
A. People vary in their rate of aging. B. The cells of the body age in different ways.
C. The various parts of the body do not wear out at the same rate,
D. All body cells once worn out can never be replaced.
7. Which piece of information is given in the passage?
A. Gerontologists can give man a longer life.
B. Gerontologists can prevent diseases connected with aging.
C. Gerontologists have discovered that aging is controlled by a built-in biological time-clock.
D. Gerontologists have found ways to slow down the process of aging.
8. According to the passage, what is responsible for many of the diseases of the old?
A. Their trouble in remembering recent events.
B. The worn-out nerve cells and muscle-fibers.
C. The blood vessels that have become thickened and constricted.
D. The rigid and inflexible joints between the bones.
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