内耳道底的单孔内走行的是()
A.前庭神经上终末支的椭园囊神经
B.前庭神经下终末支的球囊神经
C.前庭神经下终末支的后壶腹神经
D.前庭神经下终末支
E.蜗神经
参考答案:C
-- Would you please ___your radio a little? I can hardly go to sleep.
-- Oh, sorry.
A.turn off
B.turn on
C.turn down
D.turn up
口语交际教学应注意哪些问题?