Đáp án tham khảo có thể sai: 1a, 2b, 3d, 4d, 5a, 6d, 7a, 8d, 9c, 10c, 11c, 12a, 13c, 14a, 15d, 16b, 17d, 18d, 19a, 20c, 21d, 22a, 23b, 24d, 25a, 26d, 27b, 28a, 29d, 30a, 31a, 32d, 33a, 34d, 35c, 36b, 37d, 38d, 39b, 40b, 41d, 42b, 43d, 44b, 45a, 46c, 47d, 48c, 49d, 50d, source : IBC201 - RE - SU 2023