First of all,the situation in China is that for the________of customers it's the first time they've entered a gym  in their life.[ ]

A．quantity 

B．majority  

C．amount    

D．number

不符合掌指关节脱位临床表现的是（）。

A.局部肿胀，关节屈伸活动消失

B.脱位的掌指关节侧面隆起

C.掌指关节过伸畸形，并弹性固定

D.指节长度缩短

E.远侧掌横纹皮下可摸到脱位的掌骨头