He witnessed Yushu, a county in Qinghai Province hit by _____ unexpected earthquake, but the Yushu people haven’t lost heart, vowing to turn their homeland into _____ more beautiful Yushu.

A．a; a	B．an; the
C．the; a	D．an; a

科目 英语   题型 单选题   难度 较难

知识点： 冠词的用法辨析