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