(1) Social Science Federation, Academy of Social Sciences, Institute of Basic Theory, Library, Museum, Family Planning Association and other institutions with the nature of private institutions.

(2) Public welfare institutions with certain economic benefits, such as nursing homes, universities, primary and secondary schools, important medical and health units, nursing homes, examination management centers, etc. ;

(3) Institutions with production, operation and ability, such as applied technology research institutes, radio and television stations, newspapers and periodicals publishing houses, municipal administration, real estate management, landscape design and other urban public housing units.

According to the exams we take, colleges and universities are generally divided into comprehensive, educational and medical categories. Everyone must know about education and medical care, and the comprehensive category generally refers to units other than these two categories. Comprehensive, educational and medical classes differ greatly in the content of the exam, which we will talk about in detail below.