Our journey was slow because the train stopped ________ at different villages.
A、unceasingly
B、gradually
C、continuously
D、continually
【正确答案】：D
【题目解析】：C. adv.连续不断地.由句子可知,火车是有停下来的,所以可以排除掉. D、adv.不断地；频繁地.由at different villages可知,火车停的次数很频繁.符合句意. B、adv.逐步地；渐渐地.强调的是循序渐进,动作频率不一样. A. unceasingly不断地，继续地。