The living room is clean and tidy, with a dining table already ______ for a meal to be cooked. [ ]

A. to lay          

B. laying        

C. laid            

D. being laid

无骨折脱位的脊柱脊髓损伤早期最有效的治疗方法是

A．20%甘露醇脱水

B．地塞米松

C．短期大剂量甲基泼尼松龙

D．神经营养剂

E．颈部固定制动