To their great fear, they found _______ in the heaviest snowfall they had ever had.

A．they were catching

B．themselves caught

C．they had caught

D．themselves catching

下列选项中骨筋膜室综合征是（）

A.好发于前臂或小腿石膏包扎过紧时

B.石膏固定压迫，皮肤脱屑、出汗和瘙痒，继而水疱破溃感染

C.大量钙盐从骨骼中进入血液，并从肾中排出

D.若上腹部包裹过紧，进食后可呕吐胃内容物

E.长期固定肢体后，关节内外组织发生纤维粘连，同时关节囊和周围肌肉挛缩