16. (1)
Every year, there is a day for people around the world to celebrate the importance of good and healthy sleep﹣World Sleep Day.
(2)
A good amount of sleep helps the body and brain grow and develop.
(3)
According to the National Sleep Foundation in the US, adults need seven to nine hours of sleep every night. For students aged 10 to 17, a healthy amount is about eight to nine per night.
However, many students don't get enough sleep because of early school start times and too much homework. The China Youth and Children Research Center reported that about 80 percent of middle school students don't get enough sleep.
A lack of sleep(缺觉) can greatly affect a person's life. (4)
They can't pay attention in class or do well in sports.
To solve this problem, scientists advise that students should have less schoolwork and more time to sleep, such as taking a 20﹣minute nap(午睡)during the day. (5)
For example, try to go to sleep and wake up at the same time every day, even on weekends and during holidays.
A. Sleep is part of a person's daily activity cycle. B. People spend almost a third of their lives doing one thing:sleeping. C. Students who don't get enough sleep may get poor grades. D. People of different ages need different amounts of sleep. E. Lack of sleep also has a great deal of harm to attention. F. Sleep is like food for the brain. G. Good sleep habits are also helpful. |