B 2. B 3. A 4. A 5. A 6. A 7. A 8. C 9. D 10. C

1. - KG BAI 22 DAP AN LY THUYET VA BAI TAP DAC TRUNG VE AMINOAXIT
KG BAI 22 DAP AN LY THUYET VA BAI TAP DAC TRUNG VE AMINOAXIT

1. B 2. B 3. A 4. A 5. A 6. A 7. A 8. C 9. D 10. C