设区域D由曲线围成，则
D
元朝管辖西藏地区事务的机构 ()
设A为三阶矩阵,P为可逆矩阵,使得P-1AP=012
We were told that Sue would be ideal for the job, but she ________ badly when we talked to her.
用和平赎买的方法对 _________进行改造。
Hardly had he finished his speech ________ the audience started cheering.
围成，则
