蝶骨电极进针部位错误的是（）。
A.颧弓中点下缘乙状切迹处
B.耳屏前方2.5cm
C.进针深度约4～5cm
D.卵圆孔周围
E.可用针电极
参考答案：B
It is said that dogs will keep you _________for as long as you want when you are feeling lonely．
A．safety
B．company
C．house
D．friend
The new CRH train between Beijing and Shanghai ________ speed can reach about 380km/h will benefit ________ takes it.
A．whose; whoever
B．which; whichever
C．whose; who
D．where; whoever
