Cait， 11， was trying to fall asleep when her 8﹣year old brother， Doug，came into her room．He looked around， but seemed really out of it．Then Doug went back into the hallway and stood there looking straight up at the light．This was really strange．Cait didn't know what to do．Just then，Cait's father appeared and explained Doug was sleepwalking．

Not all sleep is the same every night． We experience some deep， quiet sleep and some active sleep，which is when dreams happen．You might think sleepwalking would happen during active sleep， but a person isn't physically active during active sleep．It usually happens in the first few hours of sleep in the period called deep sleep．

The truth is that not all sleepwalkers walk．Some simply sit up or stand in bed or act like they're awake when， in fact， they're asleep! Most，however，do get up and walk around for a few seconds or for as long as half an hour．

Sleepwalkers' eyes are open，but they don't see the same way they do when they're awake．They tend to go back to bed on their own and won't remember it in the morning．

You also might have heard that sleepwalkers can get frightened if you wake them up．That's true，so what do you do if you see someone sleepwalking？You should call for a grown﹣up who can lead the person back to bed．And once the sleepwalker is tucked back in bed， it's time for you to get some sleep， too!

Word Bank tend 倾向于 frightened 受惊的 tuck 掖好被子

根据材料内容选择最佳答案．

（1）What does "out of it" most probably mean in Chinese？ 　　

A．	茫然不觉．
B．	心满意足．
C．	垂头丧气．
D．	悠然自得．

（2）When does sleepwalking usually happen？ 　　

A．	During active sleep．
B．	In the first few hours of sleep．
C．	When dreams begin．
D．	When we're trying to fall asleep．

（3）Which paragraphs tell what sleepwalkers do？ 　　

A．	①②．
B．	②③．
C．	③④．
D．	④⑤．

（4）What should we do if we see people sleepwalking？ 　　

A．	Wake them up．
B．	Walk around with them．
C．	Do nothing and get your own sleep．
D．	Ask grown﹣ups to lead them to bed．

（5）Who is the text written for？ 　　

A．	Teachers．
B．	Doctors．
C．	Parents．
D．	Children．