The heavy snow lasted for a week, a serious traffic confusion in the whole area.
A. causing
B. caused
C. having caused
D. being caused
网友回答
(答案→)A. causing
B. caused
C. having caused
D. being caused
解析：考察分词作状语用法。现在分词作状语表示意料之中的结果，本题不存在完成时的形式，故A正确。句意：暴雪持续了一个星期，导致了整个地区严重的交通堵塞。