Because of the snow,many parts of the countryside are only by helicopter.
A. available
B. appropriate
C. accessible
D. achievable
网友回答
A. available
B. appropriate
(答案→)C. accessible
D. achievable
解析：available可得到的,appropriate合适的；accessible可到达的；achievable取得成就的。因为parts of the countryside 是地方,故选accessible。