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According to Dr. Jarvik’s studies, middle-aged and older persons would expect to ______ .
According to Dr. Jarvik’s studies, middle-aged and older persons would expect to ______ .
admin
2013-09-28
62
问题
According to Dr. Jarvik’s studies, middle-aged and older persons would expect to ______ .
Many of us believe that a person’s mind becomes less active as he grows older. But this is not true, according to Dr. Jarvik, professor of psychiatry at the University of California. She has studied the mental functioning of aging per-sons for several years. For example, one of her studies concerns 136 pairs of identical twins, who were first examined when they were already 60 years old. As Dr. Jarvik continued the study of the twins into their 70’s and 80’s, their minds did not generally decline as was expected.
However, there was some decline in their psychomotor speed. This means that it took them longer to accomplish mental tasks than it used to. But when speed was not a factor, they lost very little intellectual ability over the years. In general Dr. Jarvik’s studies have shown that there is no decline in knowledge or reasoning ability. This is true not only with those in their 30’s and 40’s, but with those in their 60’s and 70’s as well. In the cases where the older person’s mind really seems to decay, it is not necessarily a sign of decay due to old age. Often it is simply’a sign of a depressed emotional state.
选项
A、they lost a little ability to reason over the years
B、the only factor which declined over the years was their speed with which to perform mental tasks
C、their memory was not as good as it had once been
D、their minds became a bit more active as they grew older
答案
B
解析
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0
专业英语四级
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