jiao xue yan jiu- di li jiao xue yan jiu gan wu / jiao xue yan jiu jiao xue yan jiu gan wu/ jiao yu yan jiu- yu wen jiao xue yan jiu- yin le jiao yu jiao xue yuan li/. xia. jiao xue yuan li yu jiao fa/ jiao yu yan jiu jiao xue yuan li/. shang.