并列题名：Research on the common prosperity, basic medical insurance and sustainable livelihood Research on the common prosperity, basic medical insurance and sustainable livelihood 并列题名：Research on the optimum premium rate of basic medical insurance in China 并列题名：Research on the common prosperity road of socialism with Chinese characteristics Research on the optimum premium rate of basic medical insurance in China 并列题名：Research on the demand and policy of basic old-age insurance for rural residents in China