中国古代纪年法有（）。
A.王位纪年法
B.干支纪年法
C.年号纪年法
D.岁星纪年法
E.生肖纪年法
参考答案：A, B, C, D, E
Mr. Smith would have come to see you if it had been possible, but he _______ so busy.[ ]
A. was
B. had been
C. has been
D. were
男性，47岁，上腹疼痛7小时。伴发热，体温38.7℃，频繁呕吐。查体发现上腹部肌紧张，压痛，无移动性浊音。血白细胞17×109/L，X线检查：膈下未见游离气体。
如果病人治疗期间出现上腹部包块，首先考虑的诊断是（）。
A.腹膜转移癌
B.粘连肠梗阻
C.胰腺假性囊肿
D.胰腺癌
E.结肠癌
