阅读理解。Sittingonachairalldayinschoolcanmakeanyonewanttomo...
问题详情：阅读理解。Sittingonachairalldayinschoolcanmakeanyonewanttomovearound.So,moreandmoreteachersarelettingstudentshaveaball.Bysittingonexerciseballsinsteadofchairs,teachersfindstudents’attentionim...