Deep at night, they could still

Deep at night, they could still hear gun-fire （） in the distance.
A、ambling
B、ringing
C、rumbling
D、rambling
【正确答案】：C
【题目解析】：本题考查动词辨析。amble：（马）缓行，从容地走，漫步；ring：电话铃响；rumble：隆隆作响；ramble：漫游，漫步。所选动词所修饰的名词是“gun-fire”炮火声，所以C选项“隆隆作响”最符合句意。句意：深夜，他们仍能听到远处隆隆的枪声。