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古人云:“人生七十古来稀。”这句话说明了人的寿命与社会环境有关,从一个侧面反映了历史的真实。回溯我国不同朝代的平均寿命:夏商平均寿命十八岁;西汉平均寿命二十岁;东汉平均寿命二十二岁;唐朝平均寿命二十七岁;宋朝平均寿命三十岁;清朝平均寿命三十三岁;民国平均寿命三十五岁。社会的进步,科学技术的发展,造成了人均寿命延长的伟大进步。解放后我国人口寿命显著增长,1957年早均寿命就达到五十七岁,1981年达到六十八点九七岁;预计到2000年,平均寿命定会超过七十岁。以北京市区为例,1950年平均寿命为五十二岁,1963年增至七十岁,1979年达到七十三岁。因此,“人生七十古来稀”这句话,在科学进步的今天就不对了。今天科学家研究的结果表明:人类正常的寿命不应少于一百二十岁。科学家在哺乳动物的研究中发现,它们的最高寿命,大约相当于生长期的五至七倍。人也是哺乳动物,人的生长期为二十至
The ancients said: “Life is seventy to dilute. ” This sentence shows the life of the people and the social environment, from one side reflects the true history. Back to the average life expectancy of different dynasties in our country: the average life expectancy of Xia and Shang was 18; the average life span of Western Han Dynasty was 20; the average life span of Eastern Han was 22; the average life expectancy of Tang Dynasty was 27; the Song Dynasty average life expectancy was 30; Thirty-three years old; Republic of China average life expectancy of 35 years. The progress of society and the development of science and technology have led to great progress in extending life expectancy. After the liberation, the life expectancy of our population has increased significantly, reaching 57 years in 1957 and 68.97 in 1981. It is estimated that by the year 2000, the average life expectancy will be over 70 years. Taking urban areas in Beijing as an example, the average life expectancy in 1950 was 52 and increased to 70 in 1963 and reached 73 in 1979. Therefore, the phrase “life is seventy to old and rare” is not right in the progress of science. The results of the research conducted by scientists today show that the normal human life expectancy should not be less than one hundred and twenty years. In mammalian studies, scientists have found that their maximum lifespan is about five to seven times the growth period. People are also mammals, human growth period of 20 to