-Do you know the boy________ is sitting next to Peter?

-Yes. He is Peter's friend. They are celebrating his ________ birthday.

A．who; ninth

B．that; nineth

C．/; nineth

D．which; ninth

下列引起放射性坐骨神经痛的疾病有（）.

A.急性腰扭伤

B.腰椎间盘突出症

C.第3腰椎横突综合征

D.神经根鞘膜瘤

E.腰部肌筋膜纤维织炎