| Song | 六级真题 10年 6月 A 12题 |
| Artist | 英语听力 |
| Album | 六级真题 |
| Question 12 W: Doctor, I haven't been able to get enough sleep lately, and I'm too tired to concentrate in class. M: Well, you know, spending too much time indoors with all that artificial lighting can do that to you. Your body loses track of whether it's day or night. Q: What does the man imply? |