If you are worried about things and are under a lot of stress at work or school, then you are probably not sleeping well. Worry can keep you awake, tossing and turning in bed until the early hours of the morning when you eventually fall asleep. When you wake up, you don’t feel refreshed（精神振作）, but tired and worn out and unable to face a new day.
Dr. Henry Winkle, in a recent newspaper article entitled Stress and Sleep, indicates（暗示、表明） that . Dr. Winkle says, “The more we worry, the less we sleep, the more we are unable to deal with stress. If we can find a way to get a good night’s sleep,” he adds, “we can often find the energy to deal with what’s worrying us.”
So, what is a good night’s sleep? Research shows that the amount of sleep which people need in order to keep healthy varies a lot. Seven hours is about the average amount, though strangely enough, sleeping longer often gives you a headache instead of making you feel more refreshed.
Dr. Winkle believes that preparing for sleeping is important. People who work 
late should try to give themselves a short break and do something restful before going to bed. This could be watching TV or listening to music. Doing some exercise earlier in the day should help you to feel physically as well as mentally tired. A bedtime drink can also help, but coffee or tea should be avoided as they contain caffeine and will keep you awake. “When you put the light out,” Dr. Winkle says, “concentrate on relaxing your muscles, working slowly up from your feet, and you’ll be asleep before you know it.”
小题1:What is the best title of the passage? (Please answer within 10 words)
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小题2:Which sentence in the passage can be replaced by the following one?
People shouldn’t go to sleep immediately but should take a break after working late in the night.
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小题3:Please fill in the blank in the second paragraph with proper words or phrases to complete the sentence. (Please answer within 10 words)
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小题4:Someone says that the longer you sleep, the better you feel. Try to find some arguments from the passage against the idea. (Please answer within 30 words)
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小题5:Translate the underlined sentence in the first paragraph into Chinese.
2Z(g) △H＜0 
