A. Thinking can prevent the brain from shrinking. B. The reason why people are aging. C. Scientists have worked out a way to kee

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问题 A. Thinking can prevent the brain from shrinking.
B. The reason why people are aging.
C. Scientists have worked out a way to keep people healthy.
D. Computer technology.
E. The different time of brain contraction between people in the country and in the towns.
F. Measurements of the volume of the front and side sections of the brain.
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