Đáp án chỉ để tham khảo vẫn có thể sai: 1d, 2a, 3c, 4c, 5a, 6d, 7c, 8c, 9c, 10e, 11a, 12c, 13b, 14a, 15b, 16c, 17a, 18a, 19a, 20a, 21c, 22b, 23c, 24c, 25b, 26a, 27b, 28c, 29a, 30d, 31c, 32c, 33a, 34d, 35d, 36a, 37b, 38c, 39b, 40c, 41a, 42b, 43a, 44c, 45c, 46abc, 47a, 48c, 49c, 50c, 51b, 52b...