--- 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

有关切片的说法正确的有：（）

A.用切片工具可以直接切割图像。 

B.切片可以被锁定。 

C.用辅助线可以生成切片。 

D.在切片中可以设置一个热区 

E.切片可以被隐藏