填空题

American society is not nap friendly. In fact, says David Dinges, a sleep (36)________at the University of Pennsylvania School of Medicine. "There’’s even a (37)________against admitting we need sleep." Nobody wants to be caught napping or found (38)________at work. To quote a proverb: "Some sleep five hours, nature requires seven, laziness nine and (39)________eleven." The way not to fall asleep at work is to take naps when you need them. "We have to totally change our (40)________toward napping", says Dr. William Dement of Stanford University, the godfather of sleep research. Last year a national commission led by Dement (41)________an "American sleep debt" which one member said was as important as the national debt. The commission was (42)________about the dangers of sleepiness: people causing (43)________accidents or falling asleep while driving. This may be why we have a new sleep policy in the White House. According to recent reports, the President is trying to take a half hour nap every afternoon. (44)________________. We seem to have "a mid-afternoon quiet phase" also called "a secondary sleep gate". (45)________________. Clearly, we were born to nap. We Superstars of Snooze don’’t nap to replace lost shut eye or to prepare for a night shift. Rather, we "snack" on sleep, whenever, wherever and at whatever time we feel like it. (46)________________.