3 Victor gets eight hours of sleep a night.
举一反三
- Sleep: Jerry gets hours of sleep a night. Sometimes he can sleep for a week and then not sleep for two or three or four days.
- Two groups of people are compared in the third study. They are people______. A: with less than5 hours of sleep a night and with 7 to 9 hours of sleep B: who slept 4 hours a night and who slept 4 hours for 2 nights C: with less than 4 hours of sleep a night and with 7 to 9 hours of sleep D: with less than 5 hours of sleep a night and with 8 hours of sleep
- What is TRUE of human sleep A: Most people need less sleep when grow older. B: Most people need seven and a half hours of sleep every night. C: On average, people in the U. S. today sleep less per night than they used to. D: For most people, less than six hours of sleep on a typical work night is enough.
- 8. Teenagers should get at least eight hours of sleep every day.
- Few things are as_________as getting a good night’s sleep every night.