【维护正义】
材料一 在公交车上，青年马某发现小偷正在偷乘客的东西，大声喊抓小偷，并和其他乘客一起制服小偷。
材料二 在放学路上，中学生陈某发现有几个社会青年在敲诈小同学，他想：“和自己无关。“悄悄走开了。

Two Little Monkeys

    The monkey mother has two little monkeys. She likes the younger, not the other.

    One day, they were playing in a forest when a wolf came running at them. The monkey ran away with the younger monkey in a hurry and left the older alone. She climbed up a tree and held the younger in her arms.

    After some time, the wolf went away slowly. The monkey took the baby out of her arms. She was surprised to see that the baby had died, for the baby was held in arms too highly. Very long time later, she remembered to look for the older baby. The older baby was hiding in a wood. So he saved himself.

读句子判断对错。