--- Beautiful day, isn’t it? Shall we go out for a picnic?

--- ________!

A．Good luck

B．Sounds great

C．You are right

D．Have fun

如果此肿物突然生长加快，X线片示在瘤体边缘有模糊不清的棉絮状钙化阴影，对其治疗应采用

A．观察

B．肿瘤切除术

C．局部广泛切除或截肢

D．放射疗法

E．化学疗法