第三部分：概括大意與完成句子
1. Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitively areas such as attention and memory. This is true regardless of age.
2. People will be alert and receptive if they are faced with information that get them to think about things they are interested in, and someone with a history of doing more rather than less will go into old age more cognitively sound than someone who has not had an active mind.
3. Many experts are so convinced of the benefits of challenging the brain that they are putting the theory to work in their own lives. “The idea is not necessarily to learn to memorize enormous amounts of information,” says James Fozard, associate director of the National Institute on Aging. “Most of us don’t need that kind of skill. Such specific training is of less interest than being able to maintain mental alertness.” Fozard and others say they challenge their brains to work.
4. Gene Cohen, acting director of the same institute, suggests that people in their old age should engage in mental and physical activities individually as well as in groups. Cohen says that we are frequently advised to keep physically active as we age, but older people need to keep mentally active as well. Those who do are more likely to maintain their intellectual abilities and to be generally happier and better adjusted. “ The point is, you need to do both.” Cohen says, “Intellectual activity actually influences brain-cell health and size.”
23. Paragraph 1 ________
24. Paragraph 2 ________
25. Paragraph 3 ________
26. Paragraph 4 ________
A. It is not beneficial for people to keep mentally active.
B. Intellectual activity can strengthen people’s mental health regardless of their age.
C. Old people should engage in both mental and physical activities.
D. Old people only need to engage in physical activities individually.
E. People with an active mind are more cognitively healthy in their old age.
F. Many experts are putting the theory to work in their own lives.
27. If people are faced with information that gets them to think about things they are interested in, they will be________.
28. Many experts are putting the theory to work in their own lives because they are convinced of ________.
29. Such specific training as learning to memorize enormous amounts of information is of less interest than being able to ________.
30. Older people need to keep both ________.
A. physically and mentally active
B. be alert and receptive
C. engage in mental activities
D. the benefits of challenging the brain
E. beneficial and happy
F. maintain mental alertness
1. Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitively areas such as attention and memory. This is true regardless of age.
2. People will be alert and receptive if they are faced with information that get them to think about things they are interested in, and someone with a history of doing more rather than less will go into old age more cognitively sound than someone who has not had an active mind.
3. Many experts are so convinced of the benefits of challenging the brain that they are putting the theory to work in their own lives. “The idea is not necessarily to learn to memorize enormous amounts of information,” says James Fozard, associate director of the National Institute on Aging. “Most of us don’t need that kind of skill. Such specific training is of less interest than being able to maintain mental alertness.” Fozard and others say they challenge their brains to work.
4. Gene Cohen, acting director of the same institute, suggests that people in their old age should engage in mental and physical activities individually as well as in groups. Cohen says that we are frequently advised to keep physically active as we age, but older people need to keep mentally active as well. Those who do are more likely to maintain their intellectual abilities and to be generally happier and better adjusted. “ The point is, you need to do both.” Cohen says, “Intellectual activity actually influences brain-cell health and size.”
23. Paragraph 1 ________
24. Paragraph 2 ________
25. Paragraph 3 ________
26. Paragraph 4 ________
A. It is not beneficial for people to keep mentally active.
B. Intellectual activity can strengthen people’s mental health regardless of their age.
C. Old people should engage in both mental and physical activities.
D. Old people only need to engage in physical activities individually.
E. People with an active mind are more cognitively healthy in their old age.
F. Many experts are putting the theory to work in their own lives.
27. If people are faced with information that gets them to think about things they are interested in, they will be________.
28. Many experts are putting the theory to work in their own lives because they are convinced of ________.
29. Such specific training as learning to memorize enormous amounts of information is of less interest than being able to ________.
30. Older people need to keep both ________.
A. physically and mentally active
B. be alert and receptive
C. engage in mental activities
D. the benefits of challenging the brain
E. beneficial and happy
F. maintain mental alertness