Most American families are smaller than the families in other countries. Children in the USA will leave their parents when they grow up. They usually live far from their parents because they want to find good jobs. They often write to their parents or telephone them. And they often go to visit their parents on holidays.

    Parents usually let their children choose their own jobs. Americans think it is important(重要的) for them to make decisions(作决定).

    Children are also asked to do some housework at home. And in many families，children will get money from their parents for doing some housework. Because American parents want to let their children learn how to make money for their own use.

阅读下列材料，回答问题

材料一：“麻雀叫，麻雀叫，日本人，真凶暴。夺我东三省，杀我们同胞。小朋友！大家起来闹，日本糖果我不吃，东洋玩具我不要。”

材料二：命令前线官兵坚决抵抗，卢沟桥即尔等之坟墓，应与桥共存亡，不得后退。

──第二十九军司令部命令

材料三：日本士兵武夫日记记载：上午8时30分列队。到城外下关打扫战场，也就是去处理敌人的尸体。扬子江岸边尸体遍地，令人吃惊。用汽船搬运死尸，投入扬子江的江心。仅我们处理的尸体就约2000具。