男性，20岁，踢足球时右膝摔伤，8周后仍疼痛。查体：右膝肿胀，浮髌试验阳性，前抽屉试验阳性，侧方应力试验阴性。

其最佳的诊治方法是（）

A.膝关节镜

B.切开探查修复

C.膝关节CT

D.膝关节穿刺抽液检查

E.膝关节X线片

The rich only _________ themselves in making money and had no eye for the needs and welfare of their workers．

A．occupied

B．concerned

C．enjoyed

D．devoted