《2026年金考卷中考45套汇编英语河北专版》

D
连环闹钟偷走深度睡眠
Let's say you need to wake up by 7 am to get to school on time. So you set your first alarm for 6:30 am, your second for 6:45 am and your third for 6:55 am for fear of oversleeping. However, this can be bad for your health because it makes sleep quality poorer.
A good sleep happens in cycles (周期). Each cycle has four periods. During Period One, we go into a light sleep. Our body relaxes and our heartbeat (心跳) slows. As we fall deeper into sleep, Period Two begins. Our eyes stop moving and our body temperature drops with slower heartbeat. Then comes the third period which is the deepest sleep and also the hardest for people to wake up from. The last is the fourth period, known as rapid eye movement sleep, or REM sleep. Our eyes move rapidly from side to side during this period. At the same time, our breathing (呼吸) picks up and our heartbeat rises.
REM sleep is very important because most of our dreams take place during it. This allows our brain to process emotions (情绪). REM sleep also helps the brain turn the new knowledge gained during the day into memories. When we get enough REM sleep, it is easier to focus on studying the next day.
Since REM sleep mostly takes place in the last hours of a night's sleep, it is a bad idea to disrupt it with alarms ringing one after another.
"My advice is that you set one alarm," said a doctor. She also suggested that people try alarms that use light, not sound, to wake up.
66. How does the writer start the text?
A. By listing facts.
B. By telling a story.
C. By comparing ideas.
D. By giving an example.
67. Which of the following shows the change of heartbeat during a sleep cycle?
($x$ = a sleep cycle, $y$ = heartbeat)

 
68. What may happen during REM sleep?
①Eyes move quickly.
②Breathing picks up.
③Brain processes emotions.
④Brain gets new knowledge.
A. ①②③
B. ②③④
C. ①③④
D. ①②④
69. What does the underlined word "disrupt" mean?
A. Check.
B. Record.
C. Break.
D. Discuss.
70. What is the best title for the text?
A. What do you usually do to avoid oversleeping?
B. What's the most important period in a sleep cycle?
C. Why do we have trouble getting up in the morning?
D. Is it wise to wake ourselves up with several alarms?

答案： 66.D 67.B 68.A 69.C 70.D