足厥阴肝经的走向是（）
A．从脏走头
B．从手走头
C．从头走足
D．从足走腹
参考答案：D
长度为a的线段AB的两个端点A、B都在抛物线y2=2px（p＞0，a＞2p）上滑动，则线段AB的中点M到y轴的最短距离为______．
---The thread of my kite broke and it flew away.
---I told you it would easily break _____ was the weakest.
A．where
B．the place where
C．for it
D．where it
