The subject wants to ask "What is the level of students in the preliminary contest of the national middle school students' mathematical Olympics"? Students from Grade One to Grade One. In May, 2022, at 8: 30 am-10: 30 am, Beijing held the Beijing Invitational Tournament (preliminaries) of the National Mathematical Olympiad for Middle School Students. The contestants were students from Grade One to Grade One in all middle schools in Beijing. 8 fill-in-the-blank questions (8 points for each question) +3 big questions, *** 120 points.