Bài Làm:
| 1 | C | 21 | D |
| 2 | C | 22 | C |
| 3 | D | 23 | C |
| 4 | C | 24 | B |
| 5 | A | 25 | A |
| 6 | C | 26 | D |
| 7 | A | 27 | B |
| 8 | B | 28 | C |
| 9 | B | 29 | B |
| 10 | A | 30 | A |
| 11 | C | 31 | A |
| 12 | D | 32 | B |
| 13 | C | 33 | C |
| 14 | A | 34 | D |
| 15 | B | 35 | D |
| 16 | A | 36 | A |
| 17 | A | 37 | B |
| 18 | D | 38 | A |
| 19 | A | 39 | A |
| 20 | C | 40 | C |