四大须生是马连良、谭富英、杨宝森、奚啸伯，余叔岩、马连良、言菊朋、高庆奎。
参考答案：对
He is ___this afternoon.
A．go hiking
B．goes hiking
C．going hike
D．going hiking
辅机检修前应注意哪些事项？
