604389T
BDCBD CCCDC DADCC
DCDDC BDADB DBABD
√××√× √×√××
12 23 28a
31343638对
1 4 25 27 29b
12 23 28 A
1 4 21 25 27 29 B
3 6 7 8 10 14 15 17 20 C
31 34 36 38 正确