诊断强直性脊柱炎最可靠的依据是
A．HLA-B27阳性
B．驼背畸形
C．脊柱“竹节样”改变
D．双侧骶髂关节炎
E．抗核抗体阳性
参考答案：C
---We should forgive him for making such mistakes.
---You are right, ______ that he is only a new hand.
A．being considered
B．considering
C．to be considered
D．considered
可与Girard T反应生成水溶性缩合物的是( )
A．酚性成分B．酸性成分C．醛或酮类成分D．酮类成分E．碱性成分
