As it is, sleep is so undervalued that getting by on fewer hours has become a badge of honor. Plus, we live in a culture that __26__ to the late-nighter, from 24-hour grocery stores to online shopping sites that never close. It’s no surprise, then, that more than half of American adults don’t get the 7 to 9 hours of shut-eye every night as __27__ by sleep experts.
Whether or not we can catch up on sleep—on the weekend, say —is a hotly __28__ topic among sleep researchers. The latest evidence suggests that while it isn’t __29__ , it might help. When Liu, the UCLA sleep researcher and professor of medicine, brought __30__ sleep-restricted people into the lab for a weekend of sleep during which they logged about 10 hours per night, they showed __31__ in the ability of insulin(胰岛素) to process blood sugar. That suggests that catch-up sleep may undo some but not all of the damage that sleep __32__ causes, which is encouraging given how many adults don’t get the hours they need each night. Still, Liu isn’t __33__ to endorse the habit of sleeping less and making up for it later.
Sleeping pills, while helpful for some, are not __34__ an effective remedy either. “A sleeping pill will __35__ 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 of the brain to go through the different stages of sleep,” says Dr. Nancy Collop, director of the Emory university Sleep Center.
A) alternatively
B) caters
C) chronically
D) debated
E) deprivation
F) ideal
G) improvements
H) necessarily
I) negotiated
J) pierce
K) presumption
L) ready
M) recommended
N) surpasses
O) target
答案解析：
根据“we live in a culture that...to the late - nighter, from 24 - hour grocery stores to online shopping sites that never close”，可知这里表达我们的文化迎合了熬夜的人，“cater to”有“迎合”之意，所以选B。
根据“more than half of American adults don’t get the 7 to 9 hours of shut - eye every night as...by sleep experts”，可知是像睡眠专家推荐的那样，“recommend”表示“推荐”，这里用其过去分词形式，所以选M。
根据“Whether or not we can catch up on sleep...is a hotly...topic among sleep researchers”，可知在睡眠研究者中这是一个被热烈争论的话题，“debated”表示“被争论的”，所以选D。
根据“The latest evidence suggests that while it isn’t..., it might help”，可知虽然它不理想但可能有帮助，“ideal”表示“理想的”，所以选F。
根据“brought...sleep - restricted people into the lab”，可知是带那些长期受睡眠限制的人进实验室，“chronically”表示“长期地”，所以选C。
根据“they showed...in the ability of insulin(胰岛素) to process blood sugar”，可知他们表现出胰岛素处理血糖能力的提高，“improvements”表示“提高”，所以选G。
根据“that catch - up sleep may undo some but not all of the damage that sleep...causes”，可知是睡眠剥夺造成的损害，“deprivation”表示“剥夺”，这里“sleep deprivation”表示“睡眠剥夺”，所以选E。
根据“Still, Liu isn’t...to endorse the habit of sleeping less and making up for it later”，可知Liu还不准备认可少睡然后补觉的习惯，“ready”表示“准备好的”，所以选L。
根据“Sleeping pills, while helpful for some, are not...an effective remedy either”，可知安眠药不一定是有效的补救办法，“necessarily”表示“必然地”，所以选H。
根据“A sleeping pill will...one area of the brain”，可知安眠药会针对大脑的一个区域，“target”有“针对”之意，所以选O。
