7. _____ is the designer of the National Flag of new China. A: A. Chairman Mao B: B. Lin Huiyin C: C. Liang Sicheng D: D. Zeng Liansong

Which is the last point of the twelve meridians?（ ） A: LU 1 Zhongfu B: DU 28 Yinjiao C: RN 1 Huiyin D: LR 13 Zhangmen E: LR 14 Qimen