颈椎不稳的主要诊断依据之一，是过伸过屈位椎体角度位移大于（）
A.15°
B.12°
C.11°
D.10°
E.9°
参考答案：C
治疗气血不足，疮疡脓成不溃或溃久不敛，常选的药物是
A．山药
B．西洋参
C．白术
D．黄芪
E．太子参
We have been in China three years. We like it very much.
A. in B. since C. for
