When she heard about the experiment, the writer thought that things would Прочитайте текст и выберите правильный вариант ответа на вопросы 4–7. I was 12 when I came to Maywood School, three years ago. Like most schools in the USA, classes began at 8.00 am. However, the headteacher, Mr Bergman, thought there was a problem, because so many students were either missing the ­ first class or arriving late. My classmates and I often found it hard to keep our eyes open in the mornings, so lessons were no fun for us. Our marks weren’t brilliant either. In the end, Mr Bergman asked the school doctor for advice. The doctor explained that because teenagers’ bodies are growing so quickly, they need more sleep than adults and children. But their body clocks make it hard for them to go to bed before 11.00 pm, so the best time for them to wake up is around 8.00 am. Dr Bergman decided to try an experiment. He changed the start time for lessons to 9.00 am. The school still opened at 8.00 am and teachers used the extra hour for preparing lessons. I didn’t think the new timetable would make much difference, but I was wrong. I felt much better! Everyone’s marks improved, and we all felt more healthy. Also, more students had time for a hot breakfast together in the cafeteria. After three months Mr Bergman asked the staff, students and parents if they wanted to keep the new timetable. Everyone did.