(以下3题共用备选答案)
头、面、颈、阴囊部位手术后拆线最好在( )。
A.3~4天B.6~7天C.10~14天D.视情况而定E.分期拆线
参考答案:A
---- What do you think of Harry, our new roommate?
---- I am not sure, but he is always asking ______ questions and them are very hard to answer.
A.a great many of; a great number of
B.a great many; many of
C.a great number; a great many of
D.a large amount of , many
各铁路局的统称语通电略号是()。