女性，30岁，被确诊为类风湿关节炎，药物治疗7个月，效果不明显，双膝关节肿胀明显，体检双膝关节肿胀，触之肥厚感，皮温稍高，关节活动度0°～120°。X线片可见关节轻度骨质破坏。正确的治疗方法为（）

A.关节穿刺抽液

B.滑膜切除术

C.人工膝关节置换

D.继续内科治疗

E.理疗

Bulk cargo refers to（）.

A.cargo which occupies a large volume of space

B.cargo which require refrigeration

C.cargo which is very dense

D.homogeneous cargo not enclosed in a container