问题补充:
Luckily, only a few passengers aboard were injured in the traffic accident.
A. slightly
B. approximately
C. exactly
D. gradually
答案:
(答案→)A. slightly
B. approximately
C. exactly
D. gradually
解析:考查副词:A. slightly稍微地B. approximately大约C. exactly 确切地D. gradually逐渐地,句意:幸运的是,在车祸中只有几个车上的乘客轻微受伤。选A。