【题目】The motorway was closed because of fog; as a result we had to find an ________ route.
A. impressive B. effective
C. aggressive D. alternative
在线课程【答案】D
【解析】impressive印象深刻的； effective有效的；aggressive 好斗的；alternative可选择的。根据句意，故选D。句意：由于大雾道路被封了；结果我们之后找另外一条路。