阅读理解Enoughsleepisimportanttohealth．Theamountofsleepneededdependsontheageofthepersonandtheconditionsinwhichsleeptakesplace．Theyoungmayneedmoresleepthantheold

　　阅读理解

　　Enoughsleepisimportanttohealth．Theamountofsleepneededdependsontheageofthepersonandtheconditionsinwhichsleeptakesplace．Theyoungmayneedmoresleepthantheoldbutusuallyeighthoursareenoughforthehealthofgrown-ups．

　　Somecandowithlessthanthisamountbutothersmayneedmore．Everypersonknowshisownneed．Itisthenamatterofgoodjudgementtosatisfyhisneed．Sleepshouldalwaysbeenoughtomakeonebringbackhisstrengthandgetreadyforaday’swork．

　　Freshairisnecessarytosoundsleep．Itisnotwithoutreasonforsomepeopletothinkthatitispracticabletosleepintheopenair．Whenonecankeephimselfwarmout-of-doorsleepingprobablygivesthebodyitsmostcompleterelaxation(松弛)．

　　Abilitytosleepislargelyahabit．Theconditionsreferredtoonlyleadtosleep．Out-of-doorexercisesagoodhabitofregularhoursandtheavoidance(避免)oflateeatingandworrywhicharelargelywithinthecontrolofanypersonareallhelpfultosoundsleep．

　　Abathatbedtimeneitherhotnorcoolbutofbodytemperaturemaybehelpfultosleep．Sleep-producingdrug(药)shouldneverbetakenexceptwhensuggestedbyadoctor．

　　(1)

　　Howmanyhoursareusuallyenoughforthehealthofapupil?

　　[]A．

　　Lessthaneighthours．

　　B．

　　Nomorethaneighthours．

　　C．

　　Eighthoursorso．

　　D．

　　Nolessthaneighthours．

　　(2)

　　Whichofthefollowingishelpfultogoodsleep?

　　[]A．

　　Keepinggoodhabits．

　　B．

　　Stayinguplateatnight．

　　C．

　　Eatingsomethingatbedtime．

　　D．

　　Formingthehabitofta