1. (2021八上·海曙期中) 阅读理解

You may know about junk food like French fries. But do you know about junk sleep？

Recently, a British survey found that electronic products（电子产品）in teenagers' bedrooms are affecting（影响）their sleep. The survey was done among 1, 000 British kids from 12 to 16. It found that 30 percent of them got just 4 to 7 hours of sleep every day. But doctors say they need 8 to 9 hours.

Almost a quarter of the kids said they fell asleep more than once a week while watching TV, listening to music or using other electronic products.

" This is very worrying. "said Dr. Chris Idzikowski, "We call it junk sleep. It means you don't get enough sleep and the quality（质量） of the sleep is bad, too. If you don't get good rest, you won't perform well in school the next day. "

The survey found that 40 percent of the kids felt tired each day, with girls between 13 and 16 feeling the worst. Nearly all the teenagers have a phone, Mp5 or TV in their bedrooms. And many of them have all three.

1. （1） This passage is mainly about       ．

   A . junk food B . junk sleep C . electronic products D . the importance of sleep
3. （2）       of the children in the survey sleep only 4 to 7 hours a day．

   A . 200 B . 300 C . 500 D . 1，000
5. （3） Junk food and junk sleep are similar to each other in the way that       ．

   A . they are both low（低） in quality（质量） B . they are both produced(生产) in factories（工厂） C . people enjoy both in their free time D . they are both good for people's health
7. （4） Which of the following is TRUE according to the passage？      

   A . Teenagers need 4 to 7 hours of sleep each day． B . Few of the teenagers have a phone in their bedrooms． C . Teenagers spend too much time on electronic products． D . Girls between 15 and 16 spend the least time on electronic products．