Peasants earn their living by selling agriculture __________ in China.

A．cost

B．food

C．products

D．production

经皮椎间盘切吸术合并症中，例外的是（）

A.截瘫

B.出血形成腰肌血肿

C.腰椎间盘感染

D.神经损伤

E.穿入腹腔引起脏器损伤