根据航道条件与河岸地形，首尾导标的共享标可位于另两坐标的（）.
A、前方
B、后方
C、左侧或右侧
D、以上都对
参考答案：D
The thief admitted over 10 motorbikes and now he has been arrested .[ ]
A. to steal
B. to have stolen
C. stealing
D. having stolen
善于治霍乱吐泻转筋的药物是
A．独活B．紫菀C．羌活D．木瓜E．防己
