《2025年名师面对面同步作业本九年级英语全一册人教版浙江专版》

B 提升能力
六、阅读理解。
①Have you ever experienced the feeling of falling as you start to fall asleep? Sometimes you may come to realize this feeling.If so,don't worry.Many people have felt the same thing.In fact,these muscle twitches(肌肉抽搐)in the arms,legs or other parts of the body are called hypnic jerks(入睡抽动).And they are very common."Up to 70 percent of people experience them sometimes," Huffington Post reported. But what causes this feeling?
②There are some theories.Some scientists believe that the feeling of falling comes from the body relaxing itself,especially if the person is anxious or unable to get comfortable.As you are about to sleep,your muscles become relaxed. But your brain stays awake. It misunderstands the relaxing of your muscles as a sign that you're falling.Then the brain jerks the body awake as if it's trying to protect you.
③Other scientists believe that different phases of sleep might cause hypnic jerks.When we sleep,we experience two phases：non-rapid eye movement ( NREM ) and rapid eye movement(REM).During REM,our heart rate,breathing and nervous system can act irregularly.If the body experiences flashes of REM while entering sleep,these irregularities could cause twitches.
④If you don't want to experience hypnic jerks,scientists have some suggestions.When you become deeply relaxed,you can learn how to reconnect slowly by moving your fingers and toes a little bit.Then start to move your head and open your eyes,while being aware of yourself as you get out of the relaxed state.
⑤But experts agree that hypnic jerks,though sometimes scary,are harmless. If it wakes you up,simply roll over and go back to sleep.But keep in mind：A caffeinated(含咖啡因的)drink,exciting evening activities or stress may make hypnic jerks happen more often.
( )31.What does Paragraph 3 mainly tell us?
A.The difference between REM and NREM.
B.The feeling of falling comes from the body relaxing itself.
C.The bad influence of REM.
D.The different stages of sleep that lead to hypnic jerks.
( )32.What can we learn from the passage?
A.At least 70 percent of people always experience hypnic jerks.
B.Experts agree that hypnic jerks are scary and harmful.
C.Our heart rate acts irregularly during REM.
D.We can reconnect by moving fingers,toes and then open our eyes at once.
( )33.Which of the following shows the RIGHT structure of the passage?

A B C D
( )34.In which column of a magazine can we read this passage?
A.Science.
B.Sports.
C.Travel.
D.Animals.
词汇积累
①misunderstand /ˌmɪsʌndəˈstænd/ v. ______

答案： 31.D 32.C 33.D 34.A