打印本文 
關閉窗口 B
Getting less sleep has become a bad habit for most American kids. According to a new survey(調查) by the National Sleep Foundation, 51% of kids aged 10 to 18 go to bed at 10 pm or later on school nights, even though they have to get up early. Last year the Foundation reported that nearly 60% of 7- to 12-year-olds said they felt tired during the day, and 15% said they had fallen asleep at school.
How much sleep you need depends a lot on your age. Babies need a lot of rest: most of them sleep about 18 hours a day! Adults need about eight hours. For most school-age children, ten hours is ideal(理想的). But the new National Sleep Foundation survey found that 35% of 10- to 12-year-olds get only seven or eight hours. And guess what almost half of the surveyed kids said they do before bedtime? Watch TV.
“More children are going to bed with TVs on, and there are more opportunities(機會) to stay awake, with more homework, the Internet and the phone,” says Dr. Mary Carskadon, a sleep researcher at
Because sleepiness is such a problem for teenagers, some school districts have decided to start high school classes later than they used to. Three years ago, schools in
25. What is the new National Sleep Foundation survey on?
A. American kids’ sleeping habits.
B. Teenagers’ sleep-related diseases.
C. Activities to prevent sleeplessness.
D. Learning problems and lack of sleep.
26. How many hours of sleep do 11-year-olds need every day?
A. 7 hours. B. 8 hours.
C. 10 hours. D. 18 hours.
27. Why do teenagers go to sleep late according to Carskadon?
A. They are affected by certain body chemicals.
B. They tend to do things that excite them.
C. They follow their parents’ examples.
D. They don’t need to go to school early.
打印本文 關閉窗口