Is it, in your opinion, possible _____ new measures will be taken to improve the terrible traffic? [ ]

A. whether

B. what

C. when

D. that

男，13岁，运动后膝关节疼痛，结合图像，最可能的诊断是()

A．正常影像

B．动脉瘤样骨囊肿

C．骨软骨瘤

D．成骨细胞瘤

E．骨样骨瘤