函数f(x)=lg(x+1)的定义域是______.
由x+1>0,得x>-1,所以原函数的定义域为(-1,+∞).
故答案为(-1,+∞).
男,78岁,上腹痛1月余,反酸,无嗳气,空腹加重。体检:上腹压痛,结合图像,最可能的诊断为()
A.正常表现
B.慢性胃炎
C.胃癌
D.十二指肠憩室
E.十二指肠占位
Double Eagle II, the first transatlantic balloon, was greeted by avid crowds in France.
A.eager
B.surging
C.creative
D.vigorous