题目内容
（请给出正确答案）
A.根据电话提示音，先输入区号，再输入电话卡的密码和电话号码
B.根据电话提示音，先输入电话号码，再输入电话卡密码和区号
C.根据电话提示音，先输入电话卡密码，再输入电话号码和区号
D.根据电话提示音，先输入电话卡密码，再依次输入区号和电话号码
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更多“According to the reminding voi…”相关的问题
Researchers have found that REM(rapid eye movement)sleep is important to human beings. This type of sleep generally occurs four or five times during one night of sleep lasting five minutes to forty minutes for each occurrence. The deeper a persons sleep becomes, the longer the periods of rapid eye movement. There are physical changes in the body to show that a person has changed from NREM(non-rapid eye movement)to REM sleep. Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly. Accompanying these physical changes in the body there is a very important characteristic of REM sleep. It is during REM sleep that a person dreams.
According to the passage, how often does REM sleep occur in one night？
A．Once.
B．Twice.
C．Four or five times.
D．Forty times.
A.REM睡眠潜伏期延长
B.REM睡眠潜伏期缩短
C.REM睡眠片段化
D.REM睡眠连续化
During REM, ______.
A. your eyes move quickly
B. you dream
C. you are restless
D. both A and B
During REM periods, people ______.
A．dream less
B．wake up more easily
C．remember their dreams more clearly
D．experience discomfort
A、REM期脑血流量增加，大部分脑区神经元活动增加，脑组织温度升高
B、REM期自主神经系统的功能活动不稳定，呼吸浅块而不规则
C、REM期体温调节功能丧失，各种感觉功能显著减退
D、REM期声音刺激唤醒阈比NREM期底一些，比其他睡眠期更不容易自发性地醒来
E、REM期肌肉的张力极度下降，颈后肌及四肢肌张力几近消失，呈姿势性张力弛缓状态
