优等生选择英文怎么说

优等生选择英语的正式说法是"Valedictorian"，这个词来自拉丁语 "valedicere"，意思是"谢幕"或"告别"。Valedictorian是指学校毕业典礼上发表演讲的学生，通常是学术成绩最好的学生。

例句：

She was chosen as the valedictorian for her class because of her excellent grades. (因为她的优异成绩，她被选为班里的优等生。)
The valedictorian's speech at the graduation ceremony was inspiring and emotional. (优等生在毕业典礼上的演讲鼓舞人心并让人感动。)