5．
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有一项为多余选项。
Sleep is like food for the brain. However, many
Chinese do not sleep well, and many do not pay enough attention to sleep.
According to the index(指数), nearly a quarter
of Chinese people don't sleep well.
Ye Jingying, a sleep expert at Beijing Tongren Hospital, says,"
If people often wake up during the night, or always feel weak and tired in the
day, they should pay attention to their sleep pattern(模式). "
The report said that this is one of the main reasons
for bad sleep. Other reasons include stress and bad moods.
Above all, get enough sleep. Seven to nine hours of
sleep every night is perfect for an adult, and eight to nine hours is best for
a teenager.
Having good sleep habits is important. The report advised that
people need to keep away from digital devices(数码产品) for
at least an hour before sleep. Other advice includes: try to go to sleep
and wakeup at the same time every day, even on weekends and during holidays,
and do the same relaxing things before bed each night, like listening to soft
music.
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A. Many people play with their cell
phones or iPads before sleeping.
B. Enough sleep helps the body and brain
grow and develop.
C. How to sleep well?
D. The lights keep their brains excited
for a long while.
E. Half said that they feel tired after getting
up and 15 percent people have trouble falling asleep.
F. Some people have trouble sleeping,
especially if they are nervous or stressed about something.
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