____ in sleep and waking times is the greatest cause of sleep problems.
举一反三
- Why one should get proper sleep before learning to play piano? A: Because waking early can cause serious problems. B: Because you wouldn't feel refreshed if you sleep less. C: Because getting less than five or six hours of sleep has been connected to the inability to learn more sequence. D: Because sleeping less will lead to cognitive problems.
- Lack of sleep will not lead to any health problems.( )
- What is the best title for the text A: Too Much Sleep B: It's Homework Time C: Sleep to Succeed D: Math Problems
- She is ______ , but her husband is ______. A: waking, asleep B: wake, asleep C: awake, sleep D: awake, asleep
- If some has poor quality sleep for a long period of time, she or he may _____________. A: Have cognitive problems B: Track sleep process C: Dream all night D: Have sleep apnoea