2. The circadian rhythm can further _________ into routine cycles during the 24-hour day.
举一反三
- 智慧职教: A travel day is a 24 hour period from 12:00 a.m. to 11:59 a.m. on the next calender day.
- A travel day is a 24 hour period from 12:00 a.m. to 11:59 a.m. on the next calender day. A: 正确 B: 错误
- A hiker walked for 3 days. She walked 18 miles on the first day, walking 3 miles per hour. On the second day she walked for one less hour, but she walked one mile per hour faster than on the first day. On the third day she walked the same number of hours as on the first day but at the same speed as on the second day. How many miles in total did she walk ？（） A: 24 B: 44 C: 58 D: 60 E: 62
- What can people enjoy during National Day
- 3. How effectively can the average person learn during sleep as in the same period during the day?