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人的脑细胞约有140亿个，30岁以后每天约有10万个脑细胞死亡．到六、七十岁时大致减少十分之一左右。为了防止智力下降，有以下几条对策：一、勤于思考。生物学上有“用进度退”法则，资料表明．勤于用脑的人的智力水平比用脑数少的人要高出50％。二、坚持运动．对于人坐少动的
There are about 14 billion human brain cells, and about 100,000 brain cells die after 30 years of age. By the age of six or seventy, it will have been roughly reduced by about one tenth. In order to prevent intellectual decline, the following measures: First, diligent thinking. Biology, “with the progress of retreat” rule, the data show. Hard-working people have 50% more intelligence than those who use less brain. Second, insist on exercise. For people to sit motionless