----- Nội dung dịch tự động từ ảnh -----
Ex 7. indicate the correct answer to each of the questions
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 pot 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.

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.

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.

(Growing Old: Notes on Aging with Something like Grace)

1. What is the main idea of 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. Not all signs of aging are visible.
D. The outward signs of aging may be seen in old people.

2. All of the following may be the outward signs of aging EXCEPT
A. the graying of the hair .
B. the wrinkling of the skin .
C. the decline in hearing and eyesight
D. the loss of appetite

3. What may stop the aging of a living thing?
A. It is killed prematurely.
B. It has to suffer from an illness.
C. Its signs of aging are not detected.
D. It does not lose energy.

4. What does the word "they" in paragraph 2 refer to?
A. most body parts
B. the joints
C. all body parts
D. bones

5. What can be implied about the brain at old age?
A. It works less and less efficiently.
B. Its size becomes bigger.
C. Its size does not change.