Sleepisafunnythingbecause____________.( )
·thelongeronesleeps,thelesssoundsleephegets
·themoresleeponegets,themorelikelyastrokeoccurs
·manypeoplesticktoabouteighthoursofsleeptostayfine
·manypeoplewhosleepsixhoursanightstillfeelenergeticintheday
出自：华北水利水电大学英语
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