七选五练习( 2 020 - 2 - 10 ) For most teens, bedtime is just a childhood memory. Keep in mind the risks that come along with a lack ( 缺乏 ) of shut-eye; don’t wait to reintroduce a bedtime, and be sure to pass along these five ways to get a better sleep. Don’t stay up late to study. Teens are often found staying up late to study. Studies show sleep helps you understand and remember information. 36 If you think you badly need to study more, get up early and study in the morning instead. 37 Sleeping with your smartphone nearby results in 21 minutes less sleep each night. If your phone is easy to reach, you’ll probably end up using it when you should be dreaming. Turn your phone on airplane mode ( 飞行模式 ) . Even if your phone is out of reach, you may want to get up and check it when you hear it. Turn your phone on airplane mode. 38 Create a bedtime routine ( 常规 ) . 39 Having a bedtime routine will cause your body to prepare for sleep around that time each night. Set a time you think is proper and stick to it. Use your desk for working and your bed for sleeping. Getting into bed to do homework, read, or check your phone may make you feel good. 40 A. Bedtimes aren’t just for babies. B. Don’t sleep right by your phone. C. Besides, sleeping by your phone may be harmful to your health. D. But getting into bed should be a sign for sleep, not other activities. E. Your texts won’t come until you turn airplane mode off in the morning. F. That’s why teens often get poor grades when they cannot get enough sleep. G. After all, your bed is likely one of the most comfortable spaces in your home.