The _____ of the U.S. is now .[ ]
A. president
B. queen
C. king
D. flag
答案:A
Will you________me a favour and carry this box?It’s too heavy for me.
A.give
B.make
C.do
D.bring
隋唐五代时期,伤科首次采用()法,治疗肩胛骨脱臼。