躯干骨有哪些？各有多少块？
参考答案：
躯干骨包括有椎骨，肋和胸骨：其中椎骨24块，骶骨1块，尾骨1块，肋骨12对，胸骨1块。
膀胱冲洗及滴药法的评估
________of recent political developments, he was taken by surprise upon his arrival in the capital.
A．Unexpected
B．Unacquainted
C．Unaware
D．Unknowing
