阅读大观园，快乐连一连。

In the morning, Jim gets up and eats breakfast.He likes fruit.  Mary is hungry.

    She wants to cat some chicken and fish for her lunch.  In the evening,  Bill cats supper. His favorite food is rice and soup.

当接触网的绝缘不良时，在其支柱、支撑结构及其金属结构上，在回流线与钢轨的连接点上，都可能出现（），因此平常应避免与上述部件相接触；当接触网绝缘损坏时，禁止与之接触。