幼年性强直性脊柱炎最早出现症状和X线异常表现的部位是()
A.髋关节
B.骶髂关节
C.耻骨联合
D.颈椎
E.腰椎
参考答案:A
They were______ busy talking with each other to remember to pay for the trousers.[ ]
A. so
B. very
C. too
D. such
工商企业用于支持产品稍售的物流服务同物流企业为稍售提供的物流是同一个概念,不能相混淆。()