Just 10 percent of the 30 million Chinese currently suffering from depression are getting proper medical care _____ a lack of enough healthcare and social prejudice against mental illness, experts have said.

A．except for

B．apart from

C．due to

D．in spite of

7岁男孩，突发寒战、高热(T39.8℃)，烦躁不安，诉右膝下方剧痛，膝关节呈半屈曲状，拒动。查体发现右小腿近端皮温尚可，压痛

最可能的诊断是

A．风湿性膝关节炎
B．化脓性膝关节炎
C．股骨下端化脓性骨髓炎
D．创伤性膝关节炎