B

(2015•安徽)Doyousleepwell?Ifyouranswerisnothefollowingmighthelpyou.

Setacertainbedtimeandrisingtime

Acertainbedtimeandrisingtimecanhelpyoubuildupyourbodyclocks.Setabedtimewhichisgoodandnaturalforyou.Don’tchangeyourbedtimeandrisingtimeonweekends.

AvoidexcitingactivitiesjustbeforesleepingExcitingactivitiesgetyourthoughtsrunning.Atthesametimeifyoumaketomorrow'splanorreadanexcitingstorybeforeturningoffthelightitdoesn’tgiveyouenoughtimetorelaxbeforeyoutrytosleep.

KeepthebedroomforsleepingonlyIt5sabadhabitforyoutouseyourbedroomasaplacetoeatwatchTVreadtalkonthephoneordiscussimportantmatterswithyourfamilymembers.Breakthathabittogetbettersleep.

Don’tgotobedtooearlyYourbodyusuallyletsyousleeponlythenumberofhoursitneeds.Youshoulddecidehowmanyhoursyoumustsleepinordernottoexperiencedaytimesleepiness.

Takeawarmshowerbeforeyourbedtime

Atwenty-minutewarmshoweratatemperatureofabout45-50notonlyisagreatrelaxataday'sendbutalsoraisesyourbodytemperaturebyseveraldegrees.Thecomingdropintemperatureofyourbodywillnaturallymakeyoufeelsleepy.

4.Ifyouwanttobuildupyourbodyclocksyoushould.

   A.setacertainbedtimeandrisingtime

   B.gotobedneithertooearlynortoolate

   C.keepthebedroomforsleepingonly

   D.takeawarmshowerbeforesleeping

5.Whyshouldyouavoidexcitingactivitiesjustbeforesleeping?

   A.Becausetheywillgetyourthoughtsrunning.

   B.Becauseyouhavetomaketomorrow'splan.

   C.Becauseyoushouldreadanexcitingstory.

   D.Becauseyouwillhavetoturnoffthelight.

6.Yourbedroomshouldbekeptforonly.

   A.talking   B.eating   C.reading   D.sleeping

7.Accordingtothepassagewillmakeyoufeelsleepy.

   A.takingacoldshower   B.thedroppingofyourbodytemperature

   C.yourdailyexpe