阅读理解。 Schools in the U.S.A are a little different from schools in China. Usually, there is no school uniform. In many Chinese schools, students have school uniforms. Classes start at 8: 30 each morning and the school day ends at 3:30 or 4 o'clock in the U. S. A. And in China, classes usually start at 8:00 in the morning and the school day ends at 5:30 in the afternoon. Students have one hour for lunch and two 20-minute breaks each day in the U. S. A.  One break is in the morning, and the other is in the afternoon. In China, students have two hours' break during lunchtime and ten minutes' break for each class period. In the U. S. A, students often go to the school cafeteria at lunchtime or at break. They buy snacks and drinks there. The most popular after-school activities are baseball, football and basketball. 根据短文内容，判断句子正（T）误（F）。 (     )1. Students do not usually wear school uniforms in the U. S. A. (     )2. Students do not have a break in the morning in China. (     )3. The school cafeteria sells food and drinks to students in the U. S. A. (     )4.  Baseball is not a popular after-school activity in the U. S. A.