郑和下西洋的时间是[ ]
A.1403——1433年
B.1405——1433年
C.1415——1433年
D.1405——1443年
B
—I’ll come to see your performance at 9:00 tomorrow evening.
—I’m sorry, but by then my performance ____ and I ____ reporters in the meeting room.
A.will have ended; will be meeting
B.will end; will meet
C.will be ended; am going to meet
D.is to end; will meet
在一副扑克牌中,抽出一张牌,抽到方块的概率是______.