学帮网首字母填空.求学霸相助.首字母填空 Sleep is very important.Doctors and scientists began s________ sleep about thirty years ago.They have learned a lot by studying s________ people,but there is still m________ to learn.Scientists have lea
来源：学生作业学帮网 编辑：学帮网 时间：2024/05/14 05:51:21
首字母填空.求学霸相助.
首字母填空
Sleep is very important.Doctors and scientists began s________ sleep about thirty years ago.They have learned a lot by studying s________ people,but there is still m________ to learn.
Scientists have learned that there are two k________ of sleep ---sleep with rapid eye movement(REM快速眼动) and sleep with no rapid eye movement(NREM无快速眼动).
NREM sleep has three stages.Stage One starts w_________ you go to sleep.You have a pleasant floating(漂流) feeling.You sleep lightly a_________ may be woken up by sudden noises .In Stage Two,you sleep more deeply .Even l_________ noises may not w__________ you up.You reach Stage Three within about thirty minutes.Your brain waves(脑电波) become smaller and l________ .You reach REM sleep within a_________ thirty minutes.Dreams happen in this kind of sleep.During sleep,REM and NREM come in turn.
....最后第二个应该是longer 还是less......第二个是sleeping还是some.......
studying
sleeping
much
kinds
when
and
loud
wake
longer
about
第二个改成sleeping吧.比我的some好、
studying, some, much, kinds, when, and, loud, wake, less, about