Although the trffic is not busy, he likes to drive at a _______

Although the trffic is not busy, he likes to drive at a _______ speed.
A、spare
B、fast
C、moderate
D、moral
【正确答案】：C
【题目解析】：这里解释为适中。尽管交通不是很拥挤,但他还是喜欢开适中些的速度(注意是转折哦!)