1, A
2, A
3, C
4, D
5, D
6, C
7, B
8, D
9, C
10, A
11, C
12, B
13, C
1. A
2. A
3. C
4. D
5. D
6. C
7.B
8. D
9. C
10. A
11. C
12. B
13. C
1. A
2. A
3. C
4. D
5. D
6. C
7.B
8. D
9. C
10. A
11. C
12. B
13. C
\1A
2A
3C
4D
5D
6C
7B
8D
9C
10A
11C
12B
13C
chúc bạn học tốt