强直性脊柱炎的特点不包括
A．多数为老年发病
B．属于自身免疫性疾病
C．呈炎性病变
D．主要累及骶髂关节和脊柱
E．最终可导致脊柱强直
参考答案：A
—Why do you speak in ___ a loud voice? —Because I want to make myself ___ clearly.
A．such; hear
B．so; heard
C．such; heard
D．so; hear
生油气岩
