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　　一篇任务型DidyousleepthedayawayonMarch21?WellyoushouldhavedonethatbecauseitwasWorldSleepingDay.Thisistheonedayoftheyearwhenpeoplearoundtheworldcareabouttheirsleepandaskthemselvesalotofquestionsaboutsle

　　一篇任务型DidyousleepthedayawayonMarch21?Well

　　youshouldhavedonethatbecauseitwasWorldSleepingDay.Thisistheonedayoftheyearwhenpeoplearoundtheworldcareabouttheirsleepandaskthemselvesalotofquestionsaboutsleep.

　　Whydoweneedsleep?Nobodyasyetcangiveaperfectanswertothisquestion.However,testshaveshownthatlack(缺少)ofsleepoveraboutfourweeksleadstoastrongdropinbodytemperature,greatweightlossandfinallysickness.

　　Differentpeopleneeddifferentamountsofsleep.Eighthoursanightisconsideredtheaverageamountofsleep.Forteenagerstheleastnumberofsleepinghoursadvisedbydoctorsaretenhoursforprimaryschoolstudents,nineforjuniorhighsandeightforseniorhighs.

　　Somepeopleseemtogetalongjustfinewithverylittlesleepatnight.LeadingAmericanscientistThomasEdisonsaidthatsleepwasawasteoftime.Hedid,however,takenapsduringtheday.Ontheotherhand.AlbertEinstein,anothergreatscientist,saidheneededatleasttenhours'sleepanight.

　　Herearesomeofthemostusefulsuggestions,foragoodnight'ssleep:

　　Gotobedatthesametime.

　　Useyourbedonlytosleep.

　　Don'texerciseintheevening.

　　Keepthebedroomdarkandquiet．

　　Drinkaglassofmilkbeforesleep.

　　Stoplookingatthewatchwhileyoucan'tsleep!

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2020-01-2920:24

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　　你是否把三月二十一日睡过去了?你应该那样做,因为那天是世界睡眠日.每年的这一天,世界各地的人们都关心自己的睡眠（问题）并问自己有关睡眠的许多问题.

　　我们为什么需要睡觉?至今没有人能给出完美的答案.测试表明：超过四周以上缺少睡眠能导致体温大幅下降、体重大幅减轻并最终导致生病.

　　不同的人需要的睡眠时间各不相同.八小时睡眠是平均值.对青少年来说,医生建议小学生每天至少睡十个小时,初中生睡九个小时,高中生睡八个小时.

　　有些人晚上睡得极少也过得去.美国科学带头人托马斯爱迪生认为睡觉是对时间的浪费.然而,他在白天经常小睡一下.另一方面,另一个伟大的科学家阿尔伯特爱因斯坦说他每天晚上至少需要睡十个小时.

　　以下是对良好睡眠质量的一些有用的建议：

　　每天在同一时间段睡觉

　　床只做睡觉之用

　　不要在晚上锻炼

　　卧室保持黑暗和安静

　　睡前喝一杯牛奶

　　!睡不着时不要看表

　　bytheway,youaresomean.somanytranslationsandnoextrascores!ps,countingsheepwilldonogoodtoChinesetohelpussleepsinceitwillnotremindus"sleep".itonlyworkswhenwesaysheepinEnglish.Since"sleep"and"sheep"havethesimilarpronouciationandsaysheepwilldosomepositiveimplicationtoourselves.justlikehypnosism.