什么情况下应立即切断电缆电源？
参考答案：
①电缆着火爆炸时，或击穿接地时。②电缆着火或电缆邻近着火处有明显的灼烧的可能。
We have sent some books to the children in that village. However, they still need ______.
A．more
B．much
C．many
D．most
保尔为何被神父赶出学校？
