骨关节炎的治疗方法是()

A．注意保护关节，避免过度负重活动或损伤

B．非甾体类抗炎镇痛药物

C．关节内注射透明质酸钠

D．人工关节置换术

E．活血化淤中草药内服以及外部热敷，熏洗，浸泡

Once a decision has been made, all of us should ________ it.[ ]

A. direct to  

B. stick to

C. lead to  

D. refer to