阅读填空 先通读下面的短文，然后根据短文内容，在文章后表格的空格内填入一个最恰当的单词。所填单词必须写在答题卡对应题号的横线上。每个空格只能填一个单词。
These days the teenagers’ sleeping problem is getting more and more serious. World Sleep Day, on 21st March, was created to bring attention to the growing number of sleep problems. Sleep is a natural part of human life, but many people in the modern world don’t realize it’s very important. As a result, sleep problems are quite common.
In 2011, scientists at the University of Athens in Greece did a survey(调查) of over 35,000 people in 10 countries around the world, The survey found that many people suffer the effects of poor quality sleep, some even can’t fall asleep and often wake up in the middle of the night. The main reasons of the problems are pressures (压力) from school or work and a fast pace (节奏) of life, but noise pollution and light pollution also affect sleep and cause poor quality sleep.
The survey also found that large numbers of people find it hard to sleep at night. The short term effects of this are tiredness and trouble concentrating (专心). If this happens for a long time, the risk of gaining weight and having a heart attack may increase.
There are many things you can do to improve the quality of your sleep. First, you should have good sleep habits. Try to go to bed and wake up around the same time each day. You also need to make your bedroom a cool, dark, quiet place to sleep so that heat, light and noise do not disturb you. At night, you should also avoid things that include caffeine（咖啡因）, such as chocolate, coffee, tea and many soft drinks, as caffeine may keep you from sleeping.
Getting a good night’s sleep is important for everyone. By following the advice above, you can rest better at night and work better during the day.

Have a good sleep
World Sleep Day	World Sleep Day was created to make people understand the  _____of sleep.
Reasons	◇People feel the pressure from school or work . ◇A fast pace of life       to sleep problems as well. ◇Noise and light pollution also influence sleep and cause poor quality sleep.
_________	◇Some people aren’t able to fall asleep easily and often wake up at night. ◇Feeling     , people find it hard to concentrate. ◇It’s highly possible that sleepless people easily gain weight and have a heart attack.
Ways	◇Have regular sleep habits. ◇Make your bedroom cool, dark and quiet ◇Don’t drink anything     caffeine at bedtime.