为什么有时人走进菜窖会突然晕倒？进入菜窖前应怎样检验并避免发生这种事故？
可能含有二氧化碳，进行灯火实验
周围性面神经瘫痪病变在茎乳孔内鼓索神经近端，可有（）味觉的减退或消失。
“Whatever you want, you ____ have it so long as you get the best result,” said the boss.
A．would
B．ought to
C．shall
D．could
