单选题
{{B}}Part C{{/B}}
Directions: Read the following text
carefully and then translate the underlined segments into Chinese. Your
translation should be written clearly on ANSWER SHEET 2.
Going to the ballpark, visiting friends and playing bingo are simple
diversions for many of us. But for the elderly, these social pastimes may play a
critical role in preserving their physical and mental health.
(46) {{U}}In fact, a new study suggests that the less time older people spend
engaged in social activity, the faster their motor function tends to
decline.{{/U}} "Everybody in their 60s, 70s and 80s is walking more slowly than
they did when they were 25," says Dr. Aron Buchman, a neurologist at the Rush
University Medical Center in Chicago and leading author of the study, which was
published in the June 22nd issue of the Archives of Internal Medicine. (47)
{{U}}"Our study shows the connection between social activity and motor
function--and opens up a whole new universe of how we might intervene. "{{/U}}
(48) {{U}}An increasing body of evidence has suggested
that participating in mentally stimulating activity, socializing frequently and
exercising may help protect against age-related decline-at least cognitive
decline.{{/U}} As early as 1995, neuroscientist Carl Cotman, who studies aging and
dementia at the University of California at Irvine, published a paper in Nature
showing that physical exercise produces a protein that helps keep neurons from
dying and spurs the formation of new neural connections in the brain. (49)
{{U}}More recently, Cotman demonstrated in studies of elderly dogs and mice that
enriching their social environment is associated with improvement in brain
function.{{/U}}
Researchers are also finding that social
activity may be linked to the same protective effect in people. A recent study
of 2 500 adults ages 70 to 79, published in the journal Neurology, found that
those who were able to stay mentally sharp were also those who exercised once a
week or more, had at least a ninth grade literacy level and were socially
active.
While further research needs to be done to establish
the exact impact of social activity and exercise on specific age-related
declines (50) {{U}}it's likely that a reduction in social activity may
simply be a symptom of physical decline, since people may naturally withdraw
from social engagement as they lose motor skills{{/U}}-most researchers would
agree that it is not unreasonable to encourage seniors to get out there more.
Only 10% of people over 65 get the recommended amount of exercise (at
least 2. 5 to 5 hours a week), and given that seniors already tend to be more
socially isolated than younger adults, it's difficult to motivate them to become
more active. "If you are alone, you are less likely to follow recommendations,"
notes Verghese. It might help, though, if you visit Grandma more often and let
her know that a regular pastime may just help her stay fitter and sharper
longer.