Eight-year-old Tommy opens his eyes.He looks a little confused（困惑）.Then，he gets out of bed and walks to the kitchen.After that he gets some bread and eats it.
   The next morning，he wakes up（醒來）in bed and surprisingly finds some bread on his clothes.What happened？He has no idea.Later，his mom tells him，"Dear，don't worry.You sleepwalked last night."
   Sleepwalking is very common（普遍） in kids.About 29% of kids under 13 years old have this problem.They get better as they get older.Some adults（成年人）sleepwalk too.Many sleepwalkers don't know what they did.They often find out later from their families or roommates.Sleepwalking runs in families.If your parents sleepwalk，you may sleepwalk，too
   When thinking about sleepwalking people often ask two questions.
   Why do people walk in their sleep？Scientists cannot answer the question now.But they find it happens in deep （深度的） sleep，in the first hours of the night.At that time，the brain（大腦）is sleeping，but the body is not The sleepwalkers can walk around or do simple things.Some could even drive，study or paint.But a sleepwalk lists （持續） only a few minutes.
    ▲   .Scientists say it's not dangerous，but they will be confused when they wake up.In fact，the best way is to take them back to bed.But you must do it slowly and quietly.Let them sleep.Tell them what happened the next morning.
（1）The writer tells the story of Tommy to

A

A

.
A．show us what sleepwalking is
B．make the passage interesting
C．tell us sleepwalking is terrible
D．make us feel sorry for Tommy
（2）We can know from the passage that

D

D

.
A．sleepwalking is not very common in kids
B．most sleepwalkers know what they did last night
C．scientists know why people sleepwalk now
D．it's best to take sleepwalkers back to bed slowly and quietly
（3）Which of the following is the best for the missing part "         "？

B

B

A．How far can sleepwalkers walk？
B．Are sleepwalkers dangerous？
C．Do we need to wake up sleepwalkers？
D．When can sleepwalkers wake up？
（4）If we put the passage into three parts，which of the following is the best？

D

D

（1=Para.1 ②=Para.2 ③=Para.3 ④=Para.4 ⑤=Para.S ⑥=Para.6）
A．①②； ③④⑤； ⑥
B．①； ②③④； ⑤⑥
C．①②； ③④； ⑤⑥
D．①②； ③； ④⑤⑥