2.Nanjing (the Sourthern Capital of Liao) and Zhongdu (the Central Capital of Jin) was called _____ in the Tang dynasty. A: Yanjing B: Xijin C: Youzhou D: Dadu

The famous traveler Marco Polo travelled along the Silk Road visiting（ ）（ ）（ ）（ ）（ ）that is today's Beijing.（ ） A: Gansu B: Dadu C: Xinjiang D: Changan