- 問題詳情:Howmuchsleepdoesapersonneed?Weareallpeopleneedonlythreehoursofsleepaday_61_othersneedtenhoursor_62_(suggest)amountofsleepis8hoursforpeopleaged18to21and7hoursforpeopleoverpeoplegetold,theyneedlesssleeptime,_63_decreasesto6.5hoursanightafterage...
- 8043