Study on the improvement of rural living environment study on the problems of rural teachers arrangement Study on the improvement of urban ecological quality Study on the improvement of the social assistance system study on the transfer of rural labor in China Research on the covernance model and policy system of rural living environment Research on the improvement of quality of going concern audit judgment 并列题名：Study on the improvement of the social assistance system 并列题名：Research on the covernance model and policy system of rural living environment 并列题名：Research on the improvement of quality of going concern audit judgment