He told us _____ he had done in the past. [ ]

A. all that

B. all which

C. what all

D. that all

从高处坠落致第12胸椎压缩性骨折，有神经症状，脊髓损伤的节段是

A．胸段脊髓

B．胸腰髓

C．腰段脊髓

D．腰骶段脊髓

E．骶段脊髓