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据有关资料表明:如今的人均寿命可达75岁,有些地域甚至更高。世界已把老龄化问题列人议事日程。另一方面,有些国家将把公职人员的退休年龄不断提前。于是,寿命延长
According to relevant information, the average life expectancy of people today is up to 75 years old and in some areas even higher. The world has put the aging issue on the agenda. On the other hand, some countries will keep the retirement age of public officials advanced. As a result, life expectancy