Đáp án tham khảo, có thể sai: 1c, 2b, 3d, 4acd, 5c, 6a, 7b, 8b, 9a, 10a, 11d, 12a, 13b, 14a, 15b, 16c, 17b, 18ab, 19a, 20b, 21d, 22d, 23b, 24b, 25d, 26a, 27b, 28a, 29d, 30b, 31a, 32a, 33a, 34b, 35d, 36a, 37b, 38c, 39a, 40c, 41c, 42d, 43b, 44d, 45b, 46b, 47a, 48c, 49a, 50c, source : WDU202c - TE2...