His little son was born ____ a rainy night last year. [ ]

A. on

B. in

C. at

D. by

国家药监局在批准进口药品的同时，发布经核准的进口药品的

A．药品注册文件
B．安全性、稳定性
C．注册标准
D．注册标准和说明书
E．说明书