When US student Olivia Priedeman, 17, woke up one morning, she thought she had had a dream about making plans with a friend.
But it wasn’t a dream. Her phone showed that during the night, Priedeman had read a text message from her friend. She did it while she was fast asleep.
Reading and sending text messages while asleep—called “sleep texting”—is an unusual sleep behaviour, similar to sleepwalking. It’s also a growing concern(關心的事) among doctors: young people can’t live without their cell phones.
One in three teenagers sends more than 100 text messages a day, according to the Pew Internet & American Life Project. And at least four out of five teenagers said they sleep with their phone on or near their bed.
Elizabeth Dowdell, a professor at Villanova University in Pennsylvania, has studied sleeping texting. She said that having a phone nearby all night is a big part of the problem.
Andrew Stiehm, a sleep medicine expert with Allina Health in Minnesota, agrees. It’s possible for the part of the brain that controls motor skills (動作技能) to wake up, while the part of the brain that controls memory and judgment(判斷) may be still asleep. That’s why some people can perform basic movements ---such as walking, talking, texting or even driving—while they’re sleeping. Some of Dowdell’s students said that they’re disturbed by their nighttime texting behavior. But because sleep texting is unconscious, it’s a difficult habit to break. Dowdell said she knows of some students who wear socks on their hands to keep themselves from texting.
Marjorie Hogan, a doctor at Hennepin County Medical Center in Minneapolis, Minnesota, suggests keeping all electronic devices(電子設備) outside the bedroom at certain times.  
小題1:What happened to Olivia Priedeman?
A．She sleepwalked to a friend’s house.
B．She dreamed of making plans with a friend.
C．She phoned one of her friends during the night.
D．She read a text message from her friend while asleep.
小題2:Which part the brain controls keeps awake while asleep?
A．judgmentB．languageC．memoryD．motor skills
小題3:What does the underlined word “unconscious” mean?
A．無法B．無意識的C．無反應的D．無規(guī)律的
小題4:What does doctor Hogan suggest people who sleep text do?
A．Stop text during the daytime.
B．Take some medicine to control the behaviour.
C．Keep their phones out of their bedrooms while they sleep.
D．Wear socks on their hands to stop themselves from texting.
小題5:We can learn from the passage that ________.
A．It’s easy to give up a sleep texting habit.
B．One in three teenagers has a sleep texting habit.
C．Sleep texting can reduce the quality of one’s sleep.
D．Sleep texting does more harm to one’s health than sleepwalking.

小題1:D
小題2:D
小題3:B
小題4:C
小題5:C

試題分析：這篇短文主要介紹了睡眠短信類似于夢游”是一種不尋常的睡眠行為。形成這種行為的原因是頻繁的使用手機并發(fā)信息。專家說在睡眠中大腦控制運動技能的一部分是醒著的而大腦的控制記憶和判斷一部分可能還在睡覺。所以出現(xiàn)了睡眠短信這一現(xiàn)象。
小題1:細節(jié)理解題。根據(jù)短文第二段Her phone showed that during the night, Priedeman had read a text message from her friend. She did it while she was fast asleep.描述，那不是一個夢。她的手機顯示,在夜間她讀過從她的朋友發(fā)來的短信。她睡著的時候做的這件事。故選D
小題2:細節(jié)理解題。根據(jù)短文It’s possible for the part of the brain that controls motor skills (動作技能) to wake up, while the part of the brain that controls memory and judgment(判斷) may be still asleep.描述，有可能大腦控制運動技能的部分醒來,而大腦的控制記憶和判斷一部分可能還在睡覺�？芍谒咧写竽X控制運動技能的一部分是醒著的，故選D
小題3:詞意猜測題。根據(jù)上下文可知因為睡眠短信是無意識,所以這是一個難以打破的習慣。故選B。
小題4:細節(jié)理解題。根據(jù)根據(jù)最后一段描述，可知醫(yī)生建議在睡覺時將所有電子設備移到臥室以外。故選C。
小題5:是非判斷題。根據(jù)But because sleep texting is unconscious, it’s a difficult habit to break.可知A錯誤，根據(jù) One in three teenagers sends more than 100 text messages a day,可知B錯誤。根據(jù)第三段可知sleep texting is similar to sleepwalkin，故D項錯誤，根據(jù)短文大意，故C正確，故選C。
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The importance of    小題1:   the environment
Problems
◆ More fish being caught.
◆ More   小題2:   being cut down.
◆ More waste products being    小題3:    into rivers.
◆ More     小題4:   being born.
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◆ The world is becoming too    小題5:   .
◆ Modern methods make the situation  小題6:   .
   小題7:    
We human beings will not survive on the earth.
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◆ Eat more vegetables and less meat so that more food will be
  小題8:   for everyone.
◆ Use modern methods of    小題9:   control so that the population will not grow too fast.
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