根据题意得:x-3≠0,解得:x≠3.
—Why are you in such a hurry, John?
—There _______ an NBA basketball game in ten minutes.
A.will be
B.was
C.would be
D.has been
急性胰腺炎最常见的病因是( )
A.胰管梗阻B.胆道疾病C.饮食不节D.手术与创伤E.感染