按要求画角．

画一个大于60°的锐角．

The tourists screamed their               down to a safe landing when they were sitting in car that “fell” through the air from a tall tower.

阅读文章，选择最佳选项。

C

    On a small farm in Mexico, there are no schools. A bus is the school. The driver of the bus is the teacher. It's a school bus, but it doesn't take the children to school. It just goes round from place to place, and sometimes it comes to this farm. The bus will stay here for three weeks. The farmers call it a school on wheels. Every time when the bus comes, the farmers will come, running to it, shouting and laughing. They warmly welcome the school bus.

    When the bus is on the farm, in the morning, the teacher teaches the small children. In the afternoon, the bigger children come to have their lessons because they must work in the morning. At night, the fathers and mothers come to school. They want to learn, too. How the farmers hope that some day they can have a real school on their farm!

23. Often he _________ sit for hours doing nothing at all when he was in low spirits.

图 5 漫画告诉我们，在社会生活中（     ）

①不讲信用就要付出代价      ②要内诚于心，外信于人
③只要失信就不能贷款         ④只要诚信就能成就事业