Đáp án tham khảo, có thể sai: 1b, 2b, 4a, 5d, 6a, 7b, 8b, 9b, 10d, 11d, 12d, 13b, 16b, 18a, 19d, 20b, 21d, 22d, 23b, 24a, 26c, 27b, 28a, 29a, 30d, 31a, 32d, 33a, 35d, 36d, 37d, 38b, 39b, 40c, 41b, 42b, 43c, 44d, 45a, 46b, 47b, source : PRP201c_TE2_SU23_954266