Be careful when you deal with this chemical, as it will explode when _____ to sunlight. [ ]

A. being exposed

B. to expose

C. exposing

D. exposed

新鲜脱位（）

A.外伤后皮肤裂伤并穿通、反常活动及骨擦音

B.外伤后出现畸形，反常活动及骨擦感及皮肤擦伤

C.外伤后出现畸形，反常活动，功能障碍及皮肤擦伤

D.外伤后皮肤裂伤，肿胀，疼痛

E.外伤后疼痛及关节的弹性固定