_____their students, the famous teacher came into the hall.

A．Followed

B．Followed by

C．Being followed

D．Having been followed

手的肌腱断裂后，出现的体征是

A．手的休息位发生改变
B．局部出现剧烈的疼痛
C．被动活动丧失
D．出现手的成角畸形
E．出现侧方摆动