Peter is a small boy. He is eight years old. Now he is a student in a primary school. Of all his subjects, he likes P. E, music and math. He thinks they are fun and easy. But he doesn't like history. He thinks it is boring and difficult. He always can't understand what his history teacher, Mr. Black, says in class. One afternoon, while Mr. Black is giving a lesson to the students, Peter is reading a storybook in class.
"When is our National Day? 'Mr. Black asks Peter suddenly（突然）Peter doesn't know the answer.
"Is it difficult for you, Peter? OK! Let me ask an easy question, "Mr. Black says. "Well, who is our first president（总统）? "Peter doesn't know the answer, either. At this time, Mr. Black is not happy. He shouts, "Washington! "But who is Washington? 'Peter asks Mr. Black.
