DidyousleepthedayawayonMarch21?Well，youshouldhavedonethatbecauseitwasWorldSleepingDay.Thisistheonedayoftheyearwhenpeoplearoundtheworldcareabouttheirsleepandaskthemselvesalotofquestionsaboutsleep.
Whydoweneedsleep?Nobodyasyetcangiveacorrectanswertothisquestion.However，testshaveshownthatlackofsleepoveraboutfourweeksleadstoastrongdropinbodytemperature，greatweightlossandfinallysickness.
Differentpeopleneeddifferentamountsofsleep.Eighthoursanightisconsideredtheaverageamountofsleep.Forteenagerstheleastnumberofsleepinghoursadvisedbydoctorsaretenhoursforprimaryschoolstudents，nineforjuniorhighsandeightforseniorhighs.
Somepeopleseemtogetalongjustfinewithverylittlesleepatnight.LeadingAmericanscientistThomasEdisonsaidthatsleepwasawasteoftime.Hedid，however，takenapsduringtheday.Ontheotherhand，AlbertEinstein，anothergreatscientist，saidheneededatleasttenhours’sleepanight.
Herearesomeofthemostusefulsuggestions，foragoodnight’ssleep.
Gotobedregularly.Useyourbedonlytosleep.Don’texerciseintheevening.Keepthebedroomdarkandquiet.Drinkaglassofmilkbeforesleep.
【1】Lackingofsleepoverfourweeksleadstomanyproblems，except______.
A.dropinbodytemperature B.greatweightloss
C.sickness D.memoryloss
【2】Forprimaryschoolstudents，____hours’sleepistheleast.
A.Eight B.Nine C.Ten D.Eleven
【3】 _____onlytooknapsduringtheday，while____needed tenhours’sleep.
A.AlbertEinstein;ThomasJefferson
B.ThomasEdison，AlbertEinstein
C.AlbertEinstein，ThomasEdison
D.ThomasJefferson，AlbertEinstein
【4】WhichisNOTausefulsuggestionforagoodnight’ssleep?
A.Keepthebedroomdarkandquiet
B.Drinkaglassofmilkbeforesleep
C.Doexerciseintheevening
D.Gotobedregularly
【5】Whichisthebesttitleofthispassage?
A.SomethingAboutSleep B.WorldSleepingDay
C.AGoodSleep D.AmountofSleep
【答案】【1】D
【2】C
【3】B
【4】C
【5】A
【解析】这篇短文讲了睡眠的重要性。文章介绍为什么要保证充足的睡眠，以及对于不同年龄段的人睡足多长时间是合适的。还为我们提供了一些保证睡眠质量的小建议。
【1】D考查细节理解题。A.dropinbodytemperature体温下降；B.greatweightloss体重减轻；C.sickness疾病；D.memoryloss记忆丧失。根据第二段第三句However，testshaveshownthatlackofsleepoveraboutfourweeksleadstoastrongdropinbodytemperature，greatweightlossandfinallysickness.可知缺少睡眠会导致体温下降，体重减轻和疾病。故选C。
【2】C考查细节理解题。根据第三段第三句Forteenagerstheleastnumberofsleepinghoursadvisedbydoctorsaretenhoursforprimaryschoolstudents，可知选C。
【3】B考查细节理解题。根据文中第四段LeadingAmericanscientistThomasEdisonsaidthatsleepwasawasteoftime.Hedid，however，takenapsduringtheday.Ontheotherhand，AlbertEinstein，anothergreatscientist，saidheneededatleasttenhours’sleepanight.可知选B。
【4】C考查细节理解题。根据最后一段Gotobedregularly.Useyourbedonlytosleep.Don’texerciseintheevening.Keepthebedroomdarkandquiet.Drinkaglassofmilkbeforesleep.可知选C。
【5】A考查细节理解题。A.SomethingAboutSleep关于睡眠的一些事情；B.WorldSleepingDay世界睡眠日；C.AGoodSleep睡个好觉；D.AmountofSleep睡眠时间。本文主要讲述了睡眠的原因，并就睡眠给出了一些建议。根据本文主要内容可知选A。