His little son was born ____ a rainy night last year. [ ]
A. on
B. in
C. at
D. by
答案:A
存本取息的每期利息可视为( )。
A.即付年金
B.递延年金
C.先付年金
D.永续年金
溃疡病穿孔
A.限制钠盐B.限制蛋白质C.低糖低脂D.多喝肉汤、鸡汤E.禁食