-Was your brother born May, 1995?----No, he was born May 1st, 1996.A. in, onB. on, on

---- Was your brother born May, 1995?
----No, he was born May 1st, 1996.
A. in, on
B. on, on
C. at, on
D. on, at

(答案→)A. in, onB. on, onC. at, onD. on, at解析：在表示时间时，in表示在一个时间范围；on表示在具体某一天；at表示在具体时刻。结合语境可知May, 1995为一个时间范围，故前面用介词in。May 1st, 1996.为具体某一天，故前面用介词on。选A。

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