一道英语完形填空题,Howmuchsleepdoyouneed?Wearealldifferent.Somepeopleneedonlythreehour'ssleepanight,__1__needtenhoursofsleepanight.Afteragefifty,theaveragesleeptimegoes__2__to6.5hoursanight.Mostofpeopleh

　　一道英语完形填空题,

　　Howmuchsleepdoyouneed?Wearealldifferent.Somepeopleneedonlythreehour'ssleepanight,__1__needtenhoursofsleepanight.Afteragefifty,theaveragesleeptimegoes__2__to6.5hoursanight.

　　Mostofpeoplehaveanightwhentheycan'tsleep.AboutoneinthreeAmericanshasaproblemwith__3__.Manyofthesepeople__4__fallasleep.

　　Thisisnot__5__problem.Manyfamouspeople__6__couldnotfallasleep.Someofthesepeoplehadtheirownideastomakethemselvessleep.BenjaminFranklin,thefamousstatesmanandinventorhadfour__7__.He__8__fromonetoanothertofallasleep.KingLouisXIV(路易十四）ofFrancehad413bedsandhadtofall__9__inoneofthem.Marktwain,thefamous__10__writer,hadadifferentway.Helayonhissideacrosstheendofthebed.

　　1.A.anotherB.theotherC.othersD.theothers

　　2.A.upB.outC.inD.down

　　3.A.workB.sleepC.theirbedD.theirhealth

　　4.A.cannotB.canC.easilyD.wantto

　　5.A.anoldB.anewC.theonlyD.adifferent

　　6.A.inAmericaB.inFranceC.inhistoryD.nowadays

　　7.A.bedsB.housesC.waysD.ideas

　　8.A.wantedB.layC.movedD.wenton

　　9.A.sleepB.asleepC.sleepingD.sleepy

　　10.A.AmericanB.AustralianC.CanadianD.Chinese

　　第①⑨题请附上解释