2015年12月大学英语六级阅读真题.docxVIP

2015年12月大学英语六级阅读真题答案As it is, sleep is so undervalued that getting by on fewer hours has become a badge o? Plus, we live in a culture that 36 to the late –nighter, from 24-hourgrocery 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) negotiatedB) caters J) pierceC) chronically K) presumptionD) debated L) readyE) deprivation M) recommendedF) ideal N) surpassesG) improvements O) targetH) necessarily答案：BMDFO GELHJClimate change may be real, but it’s still not easy being greenHow do we convince our inner caveman to be greener?We ask some outstanding social scientists.A)The road to climate hell is paved with our good intentions. Politicians may tackle polluters while scientists do battle with carbon emissions. But the most pervasive problem is less obvious: our own behavio