平衡反应是属于那个水平的反应（）
A.脊髓水平
B.中脑水平
C.皮质水平
D.小脑水平
E.以上均不对
参考答案：C
It was a bad idea to build a power station in the deep valley, but it _____ as well as we had hoped.
A．cameoff
B．madeout
C．broughtout
D．wentoff
刚体绕定轴转动时，刚体上所有点的轨迹一定是圆
