to sun, rain and wind for a long time, the stone split.
A. Being exposed
B. Having exposed
C. Exposed
D. To expose
网友回答
A. Being exposed
B. Having exposed
(答案→)C. Exposed
D. To expose
解析：考查分词做状语。The stone与expose构成被动关系，所以使用过去分词。排除BD。而A表示正在被暴露。句意：长时间暴露在阳光，雨水和大风中，那块石头裂开了。C正确。