Đáp án tham khảo có thể sai: 1d, 2b, 3a, 4a, 5a, 6b, 7ad, 8b, 9d, 10c, 11a, 12a, 13c, 14b, 15a, 16a, 17a, 18c, 19b, 20a, 21b, 22b, 23c, 24b, 25d, 26c, 27b, 28b, 29c, 30d, 31b, 32c, 33a, 34a, 35b, 36d, 37d, 38a, 39a, 40a, 41b, 42c, 43b, 44a, 45a, 46b, 47c, 48a, 49b, 50c, source : DBI202S5 - FA...