下面哪一项是关节松动术中Ⅳ级手法的作用（）

A.缓解关节内结构的压力

B.减少关节面的承重

C.治疗关节周围组织粘连、挛缩引起的关节活动受限

D.确定关节活动范围末端阻力的性质

E.缓解疼痛

—It was very crowded （）I went there last night.
—I don't care whether it's crowded or not. I'd like to see it anyway.

A. though

B. because

C. when

D. since