ĐÁP ÁN THAM KHẢO 1C 11C 21B 31D 41C | | | | | 2D 12C 22C 32B 42A | | | | | 3D 13A 23B 33C 43A | | | | | 4D 14B 24A 34A 44C | | | | | 5D 15C 25C 35A 45D | | | | | 6D 16B 26A 36C 46A | | | | | 7D 17C 27A 37B 47D | | | | | 8B 18C 28A 38A 48A | | | | | 9D 19D 29C 39B 49B | | | | | 10B 20A 30B 40D 50A