A:ρA>ρB>ρC
B:ρA<ρB<ρC
C:ρA=ρB=ρC
D:无法判断
— I saw Mr. Green at school this morning.
— No, it _____ him. He flew to Canada last week.
①防止和消除社会腐败行为 ②建设社会主义法治国家
③营造维护诚信的社会环境 ④切实保障公民的受教育权