类风湿性关节炎病变始于
A．滑膜B．肌肉及肌腱C．软骨D．骨
参考答案：A
The train was__________ to arrive at 11:30,but was an hour late.
A．about
B．likely
C．certain
D．supposed
假声带（）
A.室襞
B.前庭
C.声襞
D.前庭裂
E.声门
