某同学在学习“近代西方民主政治的确立与发展”这一专题时，制作了下面的学习卡片，请指出以下内容共有几处错误(   )

    There are forty-eight students in our class. There are twenty-three boys and twenty-five girls. Some students live near the school, and some others live very far from the school. About half of the students come to school by bike. They often get to school at a quarter to seven. About ten students often come to school by bus. They often go to school very early, too. Another ten students come to school on foot. Their homes are near the school, but they are often late for school, because they get up very late.