1911年的干支纪年为辛亥，则该年的生肖应属( )。
A．鸡
B．狗
C．猪
D．虎
参考答案：C
The _____ on his face suggested that he was a little nervous. [ ]
A. instruction
B. expression
C. attitude
D. behaviour
机械连接接头面积在受拉区占受力钢筋总截面积的允许百分率的最大值为（）
A.10%
B.25%
C.50%
D.55%
