Research on the supply system and development strategy of multi-level housing in China 并列题名：Research on the supply system and development strategy of multi-level housing in China Research on the current status and development strategy of basic-level legal service workers in China 并列题名：Research on the current status and development strategy of basic-level legal service workers in China Research on sustainable development strategy of urban construction in China Research on the development strategy of bioagriculture in China Research on the internationalized development strategy for forestry higher education of China Research on the development strategy of sports science discipline in China 并列题名：Research on sustainable development strategy of urban construction in China Research on the optimization and development of agricultural insurance system in China