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2.Do you sleep well?If your answer is no,the following might help you.
Set a certain bedtime and rising time
A certain bedtime and rising time can help you build up your body clocks.Set a bedtime which is good and natural for you.Don't change your bedtime and rising time on weekends.
Avoid exciting activities just before sleeping
Exciting activities get your thoughts running.At the same time,if you make tomorrow's plan or read an exciting story before turning off the light,it doesn't give you enough time to relax before you try to sleep.
Keep the bedroom for sleeping only
It's a bad habit for you to use your bedroom as a place to eat,watch TV,read,talk on the phone,or discuss important matters with your family members.Break that habit to get better sleep.
Don't go to bed too early
Your body usually lets you sleep only the number of hours it needs.You should decide how many hours you must sleep in order not to experience daytime sleepiness.
Take a warm shower before your bedtime
A twenty-minute warm shower at a temperature of about 45-50not only is a great relax at day's end,but also raises your body temperature by several degrees.The coming drop in temperature of your body will naturally make you feel sleepy.
80.If you want to build up your body clocks,you shouldA.
A.set a certain bedtime and rising time
B.go to bed neither too early nor too late
C.keep the bedroom for sleeping only
D.take a warm shower before sleeping
81.Why should you avoid exciting activities just before sleeping?A
A.Because they will get your thoughts running
B.Because you have to make tomorrow's paln
C.Because you should read an exciting story
D.Because you will have to turn off the light.
82.Your bedroom should be kept forD only.
A.talking      
B.eating      
C.reading      
D.sleeping
83.According to the passage,B will make you feel sleepy.
A.taking a cold shower      
B.your body temperature dropping
C.your dailyexperience      
D.raising your body temperature.

分析 翻译:
你睡得好吗?如果你的回答是不,下面可能有助于你.
设置一定的就寝时间和休息时间
一定的就寝时间和休息的时间可以帮助你建立你的身体时钟,给你设置一个好的睡眠时间,不要改变你的就寝时间和周末的休息时间.
在睡觉前尽量避免刺激的活动.
令人兴奋的活动让你的思想在持续运转,同时,如果在关灯之前你在制定明天的计划或者读到一个令人兴奋的故事,你努力入睡前它不会给你足够的时间去放松.
保持卧室睡觉
对你来说要用自己的卧室来吃饭,看电视,读书,打电话聊天或者和你的家人一起讨论重要的事情是一个坏习惯.
不要太早上床睡觉
你的身体通常只会让你只睡它需要的几个小时,你应该决定你必须睡多少小时才不会在白天嗜睡.
睡前在睡前洗澡
在一天的结束一个温度约45-的50度热水澡,不仅是一个非常棒的放松,而且也把你的体温提高了几度.接下来你的身体温度下降自然会使你感到困倦.

解答 80.A.根据语境A certain bedtime and rising time can help you build up your body clocks.Set a bedtime which is good and natural for you.可知要想建立自己的生物钟,就应该设置一定的就寝和休息时间.故选:A
81.A.根据语境Exciting activities get your thoughts running.可知睡觉前做剧烈的运动让你的思想持续运转.故选:A
82.D.根据语境It's a bad habit for you to use your bedroom as a place to eat,watch TV,read,talk on the phone,or discuss important matters with your family members可知卧室应该只用来睡觉.故选:D
83.B.根据语境The coming drop in temperature of your body will naturally make you feel sleepy.可知身体温度下下降使你感觉困倦.故选:B

点评 本题考查科普知识类阅读理解.这类文章的导语一般位于整篇文章的首段.背景交待一个事实的起因.主体则对导语概括的事实进行详细叙述,这一部分命题往往最多,因此,阅读时,同学们要把这部分作为重点.结尾往往也是中心思想的概括,并与导语相呼应,命题者常在此要设计一道推理判断题.

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