贵州财经大学商务学院本科毕业设计（论文）中国平安保险股份有限公司投资价值分析专业：金融学运输学号：201801030710学生：王宏元指导教师：王子晗摘要：随着经济全球化的不断发展以及科技水平...

AbstractThe number of old people in rural areas is increasing every year,and the largenumber of old people makes the retirement problem of farmers increasingly serious.Establishing...