有头疽最常见的并发症是()。
A.走黄
B.内陷
C.流注
D.损骨
E.伤筋
参考答案:A
Entering the room, I found Mary ______at the desk and ______a letter.
A.Seated;wrote
B.Sitting;written
C.Seating;writing
D.Seated;writing
银行本票和银行承兑汇票都是由银行签发的。( )