1. 阅读短文，根据所提供的信息判断句子正误。

    The history teacher is having a lesson, but Frank is thinking about other things. The teacher asks, "Frank, do you know who is the first president(总统)of the United States?" Frank stands up, but he can't answer this question. So the teacher gets angry and shouts, "George Washington!" Frank sits down. "Stand up!" the teacher says angrily, "I don't let you sit down." "Oh, I'm sorry," says Frank. "I thought you called another student."

1. （1） Frank is listening carefully when the teacher is having a class.
3. （2） George Washington is one of Frank's classmates.
5. （3） The teacher tells Frank the answer.
7. （4） This is a history lesson.
9. （5） The teacher asks Frank to sit down when he can't answer the question.