Sleepisabasichumanneed，asbasicastheneedforoxygen．Gettingagoodnight'ssleepisnotonlydirectlyrelatedtohowwefeelthenextday，buttoourlong-termhealthaswell．However，manyofussufferfrominsomnia （失眠）．Evenmoreodfusreportatleastonenightofrestlesssleepperweek．Thisisaseriousproblem．
Well，howcanwemakesurethatwerestwellandstayhealthy？Herearesomesuggestions．
Ifyoucan'tsleepinthemiddleofthenight，don'tgetup．Thebrightlightwillaffectyourbodyclockandworsenyourinsomnia．Stayinbed!
Avoidshortsleepduringtheday，exceptforabrieftentofifteen-minutesleepbetween2：00and4：00P．M．
Limityourtimeinbedtotheaveragenumberofhoursyou‘veactuallysleptpernightlastweek．Don'ttrytomakeupforlostsleep．Itcan'tbedone．
Getregularexerciseeachday，butfinishatleastsixhoursbeforebedtime．Exercisingintheeveningcanhelpkeepyouawake．
Takeahotbathforthirtyminuteswithintwohoursofbedtime．Thebathwillwarmyou，relaxyou，andmakeyoufeelsleepy．
Keepourbedroomdark，quiet，andwellventilated （通风）．
Keeparegularschedulesevendaysaweek．Avoidsleepinglateonweekends．Althoughitmayfeelgoodwhileyou'redoingit，sleepinglateonweekendcanleadtoinsomniaduringtheweek．
Don'tdrinkalcohol （酒精）．Although，havingadrinkbeforebedmakesyousleep，alcohollosesitseffectsafterawhile．Thesecondaryeffectsofalcoholcanwakeyouupduringthesecondhalfofyournight'ssleep．
Keepthefaceoftheclockinyourbedroomturnedaway，anddon'tfindoutwhattimeitiswhenyouawakeninthenight．
59．Thefirstparagraphservesasa（n）___．
A．comment B．argument C．explanation D．introduction
60．WhichofthefollowingisNOTadvisedforagoodnight'ssleep？___
A．Don'texercisesixhoursbeforesleeping．
B．Preventingthewindfromblowingintoyourroom．
C．Stayinginbedafterfailingtosleep．
D．Don'tdrinkalcoholbeforesleeping．
61．Tosleepwell，youneedto___．
A．sleepduringthedaysometimes
B．getuplateonweekends
C．avoidlookingatyourclock
D．ha
