Zhonggong sprint roll is useful. > < br> The public and secret charge sprint is well written, and there are many knowledge test sites, which are very clear and can help you clear your mind. You can also string together the key points and difficulties, and there are teachers with a wisp of test sites before the exam. < br> zhonggong online school (zhonggong distance education) was established on 200 1. Mainly for civil servants, reference civil servants, staff of public institutions, village cadres and other public officials, it is a knowledge industry entity that integrates educational research, pre-test training, editing, publishing and distribution of books, audio-visual, network, teaching materials and other products.