— Who's that man in our classroom? It ________ be Mr. Brown. He is much taller. — You mean the man in white? He is an exchange student from England.
近几年山东省教育事业加快发展,据2015年末统计的数据显示,仅普通初中在校生就约有334万人,334万人用科学记数法表示为( )