A modern teaching building has been set up in ______ was a wasteland ten years ago.

A．what

B．which

C．that

D．where

脊髓亚急性联合变性的临床表现不包括（）

A.多中年以上起病，无性别差异

B.慢性、亚急性起病，缓慢进展

C.从肢体近端无力开始，逐渐出现手动作笨拙，行走不稳，踏棉花感

D.双下肢震动觉、位置觉障碍，远端明显

E.多数患者出现神经系统病变前有倦怠、头痛、上呼吸道感染