[]河南省林州一中分校（林虑中学）2017-2018学年高一下学期开学考试英语试题（图片版）

学利网 学科网( ZXXK COM)-名校独家资料 独家授权,侵权必究! Getting less sleep has become a bad habit for most American kids. According to a Dew survey(aA) by the National Sleep Foundation, 51% of kids d 10 to 18 go to bed at 10 pm or later on scbool 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 fe It tired dunng 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 most of them sleep about 18 hours a day Adults need about houng. For mos school- age children, ten hours is ideal(理想的). But the Foundation survey found that 359 of 10- to 12-year-olds get hat almost half of the surveyed kids said m seven or eight do before bedtime? More children are going to bed with TVs on, and there are more opportunities(tL A)to stay awake, with more homework, the Intermet and the phone. "says Dr Mary Carskadon, a slecp researcher at Brown University Medical School. She says