下列可确诊支气管异物的是()
A.X线片检查
B.CT扫描检查
C.支气管镜检查
D.病检
E.磁共振检查
参考答案:C
— What colour is it?
— _________________[ ]
A. It's a book.
B. Under the chair.
C. It's red.
交谈时应注意哪些礼仪?