戴上大腿假肢后出现腰椎前凸，可能原因不包括（）。

A.接受腔的前侧壁支撑不良

B.接受腔后侧壁形状不良

C.坐骨承重不充分

D.接受腔的前后径过大

E.假肢过长

He felt cheap about rushing to get in line before the old lady carrying heavy parcels.

A．felt inferior and ashamed

B．felt not worthwhile of doing something

C．felt bad about doing something

D．felt unhappy about doing something