Đáp án tham khảo, có thể sai: 1a, 2a, 3a, 4c, 5a, 8a, 9b, 10a, 11d, 12a, 15a, 16c, 17b, 18a, 19a, 20d, 21a, 22d, 23b, 24b, 25b, 26d, 27b, 29d, 31d, 32a, 33d, 34b, 35a, 36a, 37a, 38b, 39c, 40c, 41c, 42a, 43a, 44c, 45b, 46b, 47b, 48d, 49c, 50c, 51a, 52a, 53a, 54a, 55a, 56a, 57a, 58e, 59a, 60e...