Nowadays, few people form the habit of keeping the habit of candles in the house in case of  power      .

A．drop

B．lack

C．absence

D．failure

右眼瞳孔扩大，直接对光反射消失，间接对光反射存在，左侧瞳孔间接反射消失，提示病灶部位在（）

A.右视束

B.视交叉

C.右侧视反射

D.右侧视神经

E.左侧视神经