中国徐州机场三字代码()。 A: XRR B: XUZ C: YAB D: YAK

The Tibetan herdsmen live in big tents made from canvas or yak hair, and travel on yaks

In ancient times, Pu'er tea was distributed to other regions by______. A: carriages B: yak caravans C: camel caravans D: horse caravans

When the narrator wanted to get to the outhouse he had to ________.( ) A: have others accompany him B: cross yak territory C: ask the beautiful girl for help D: awaken other people