Passage One

Sound sleep occurs when one s intermal clock is regulated.Cireadian rhythms(生理节奏)can become compromised quite easily.Many people with sleep troublestend to vary bedtimes.To avoid thi scommon problem，sleep sufferers shoud go to bed and wake up at the same time every day.To help improve crcadian rhythms，sufferers should enjoy 15 minutes of sun exposure the first thing in the morming.

A bedtime routine can help prevent insmnia(失眠).One hour before betime，one shoud lower the lights and relax.

Reading a book or listening to calm music can help prepare the body for a night's seep.Taking a warm，candlelit bathor drinking a cup of warm milk can also help you prepare for deep sleep at night.

Stress can have a bad efeet on the body and the ability to seep.A daily exercise routine can help lower the body'

s stress naturally.One can also manage stres by writing diaris.Writing diaries can help people express their anxieties，plan for the future and improve sleep.Other ways to lower stress include deep breathing exercises and progressive muscle relaxation.

The light sending out from computers，cellphones，tablets and televisions can cause sleep problems.Therefore，these items should be turned off at least an hour before bedtime.Additinally，lowering the backlight on these electronic devices earlier in the evening can help you fall asleep faster and stay asleep longer once bedtime arrives.

A perfect bedroom invites sweet sleep.Most people sleep better in a cool，dark，and quiet room.Lower the temperature in the room to 16 ~20 degrees for a peaceful night's sleep.A dark room can be accomplished by installing light blocking curtains or wearing a sleep mask.Noise canbe reduced with either earplugs or a white noise machine.

Finally，a comfortable mattress(床垫)and pillows are essential to a good night's sleep.

36.What is the passge mainly about?

A.How to get a sound sleep.

B.How to lower body stress

C.How to regulate intemal clocks.

D.How to manage anxieties.

37.According to Paragraph 2，which of the following may lead to insomnia?

A. Reading a book for relaxation before bedtime.

B. Lowering lights one hour before bedtime.

C. Drinking some warm milk before bedtime.

D. Listening to rock music before bedtime.

38. What can be done to reduce stress?

A. Doing exercise every day

B. Making plans for the future.

C. Writing about your sleep patterns.

D. Learning to hold your breath.

39. What is the perfect condition for sleep?

A.A quiet room with flashing lights.

B.A bright room with white curtains.

C.A cool room with comfortable pillows.

D.A dark room with electronic devices.

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