—I heard a bus accident happened yesterday.
—The bus crashed. Luckily, only a few passengers aboard were injured in the traffic accident.
A. slightly
B. approximately
C. exactly
D. gradually
网友回答
(答案→)A. slightly
B. approximately
C. exactly
D. gradually
解析：考察副词词义辨析。A轻微地；B大约；C确定地；D逐渐地；句意：—我听说昨天发生了一次交通事故。—公交车撞了。幸运地是，只有一些乘客在事故里受了轻伤。故A正确。