《2025年暑假作业本大象出版社八年级英语人教版》

D
Sleep plays an important role in brain (大脑) development. Children should get enough sleep. 16. ______ A study says that because of being short of sleep, it is much harder for children to do something carefully. And also they become forgetful and easy to make mistakes. Another study shows that the right amount of sleep is just as important as healthy eating and taking exercise for children's development.
17. ______ In general, a younger child needs more sleep than an older one. Children between 5 and 11 need 10 to 12 hours' sleep a night, while older children need fewer hours.
In fact, many parents don't know how to help their children get enough sleep. Here is something you can do. For children between 5 and 11, 30 to 40 minutes' routine (日常的) activities before sleep is helpful. 18. ______ In the activities, children relax and enjoy themselves a lot, and they will go to sleep more easily.
Children more than 11 may go to bed late in the evening. They may talk with friends online, play games or watch TV. 19. ______ What's worse, they will be tired and sleepy in class. So limit (限制) your children's use of the Internet and the TV before they go to bed. 20. ______
根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使文章意思通顺、内容完整。
A. And don't put a mobile phone or a TV set in the bedroom.
B. Why does a child need so much sleep?
C. How many hours' sleep is enough for a child?
D. So they will find it difficult to get up in the morning.
E. It includes taking a shower, reading a story together and so on.

答案： 16.B 17.C 18.E 19.D 20.A