2015年12月英语六级真题及答案（卷一）_第3页

　　As it is，sleep is so undervalued that getting by on fewer hours has become a badge on Plus， we live in a culture that(36) to the late neighter， from 24 hour grocery store to ? shopping site that never 　　close。 It’s no surprise， then， that more than half of American adults get the 7 to 9 hours of shut-eye every night as (37)by sleep experts。

　　Whether or not we can catch up on sleep on the weekend， say- is a hotly (38) among sleep researchers。 The latest evidence suggests that while it isn’t (39)， it might ? when Liu， the UCLA sleep researcher and professor of medicine， brought (40) sleep-rest people into the lab for a weekend of sleep during which they lagged about 10 hours per night。showed (41)in the ability of insulin(胰岛素) to process blood sugar。 That suggests up sleep may undo some but not all of the damage that sleep (42) causes， which is encouraging ? given how many adults don’t get the hours they need each night。 Still， Liu isn’t (43) to end the habit of sleeping less and making up for it later。

　　Sleeping pills，while helpful for some， are not(44) an effective remedy either。 “A sleeping pill will (45) one area of the brain， but there’s never going to be a perfect sleeping pill， because you couldn’t really replicate (复制)the different chemicals moving in and out of different parts ? the brain to go through the different stages of sleep，” says Dr。 Nancy Collop， director of the Em? University Sleep Center。

　　A) alternatively I) negotiated

　　B) caters 　　 J) pierce

　　C) chronically 　 K) presumption

　　D) debated 　L) ready

　　E) deprivation M) recommended

　　F) ideal 　　 N) surpasses

　　G) improvements O) target

　　H) necessarily