答案

Compared with other useful professions, I believe that teachers make the greatest contribution to our social progress. In every school, college or university, it is the sacred duty of teachers to disseminate knowledge among their students, who then use their learning to play different roles in society. Also, teachers have undeniably strong influence on students and sometimes become role models during their formative years. For instance, my high school teacher Peihua Liu is such a diligent person that she was my role model at that time. So I make every effort to follow her steps and keep working hard since then. In addition, it is generally recognized that education is the foundation of national success, so teachers are the pillars of modern society.