Besides damaging people’s ability to do their best in sports, lack of sleep has also been linked to _______ troubles, such as feelings of sadness.

I’m not sure whether I’m going to take that job offer. I have _______ about my future there. A: fixed feelings B: assorted feelings C: combined feelings D: mixed feelings

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.

Techniques for ________ sleep wouldinvol...hat sleep can occur.

下面让线程休眠1分钟的正确方法是（） A: sleep(1) B: sleep(60) C: sleep(1000) D: sleep(60000)

Which of the following “mind-map branches” for the main topic"Friendship" are in the correct order? A: Friendship, respect, admiration, mutual feelings B: Friendship, mutual feelings, respect, admiration C: Friendship, admiration, mutual feelings, respect D: Respect, mutual feelings, friendship, admiration

____ in sleep and waking times is the greatest cause of sleep problems.

Did you ____________ last night? A: sleep well B: slept good C: good sleep D: well sleep

The doctor told the child ____less and ____more. A: to eat;sleep B: eat;sleep C: eating;sleeping D: eat;to sleep

What are the two kinds of sleep we experience every night Every night we have two kinds of sleep: active sleep and