Lei Feng died   ________ 1962  ________ the age of 22, but the spirit（精神）of Lei Feng will never be out of style.　

A．in; on

B．in; at

C． on ; in

D．on; at

导致脊髓损伤最常见的脊柱骨折类型为（）

A.直接暴力造成脊柱骨折

B.屈曲型脊柱骨折

C.伸展型脊柱骨折

D.纵向压力型脊柱骨折

E.扭转型脊柱骨折