He was born a cold winter morning.A. onB. inC. atD. /

问题补充：

He was born a cold winter morning.

A. on

B. in

C. at

D. /

答案：

(答案→)A. on

B. in

C. at

D. /

解析：句意：他出生在一个寒冷的冬天的早上。在具体某一天的早、下午、晚上，应用介词on。in 用于泛指早、下午或晚上；at 用在具体的时间点前。故选A。