unit 1 tourism in china unit 2 sports unit 3 education unit 4 women and ren unit 5 the elderly and the family unit 6 population and development unit 7 chinas minority ethnic grou unit 8 religion unit 9 medicine unit 10 industry unit 11 agriculture and rural economy unit 12 foreign trade and spe economic zones unit 13 science and technology unit 14 economic development and reform unit 15 environmental protection unit 16 chinas foreign policy unit 17 policies toward hong kong, macao, and taiwan unit 18 culture
以下为对购买帮助不大的评价