首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Late-night Drinking Coffee lovers, be careful. Having a quick "pick-me-up" cup of coffee late in the day will interrupt your
Late-night Drinking Coffee lovers, be careful. Having a quick "pick-me-up" cup of coffee late in the day will interrupt your
admin
2013-06-25
93
问题
Late-night Drinking
Coffee lovers, be careful. Having a quick "pick-me-up" cup of coffee late in the day will interrupt your sleep. As well as being a stimulant(兴奋剂), caffeine interrupts the flow of melatonin(褪黑激素), the brain hormone that sends people into a sleep.
Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again. "It’s the neurohormone(神经激素)that controls our sleep and tells our body when to sleep and when to wake, "says Maurice Ohayon of the Stanford Sleep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body’s levels of this sleep hormone.
Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slept less well after a cup of caffeinated coffee than after drinking the same amount of decaf(脱咖啡因咖啡). On average, subjects slept 336 minutes per night after drinking caffeinated coffee, compared with 415 minutes after decaf. They also took half an hour to drop off, twice as long as usual.
In the second phase of the experiment, the researchers woke the volunteers every three hours and asked them to give a urine(尿)sample. Shilo measured concentrations of a breakdown product of melatonin. The results suggest that melatonin concentrations in caffeine drinkers were half those in decaf drinkers. In a paper accepted for publication in Sleep Medicine, the researchers suggest that caffeine blocks production of the enzyme(酶)that drives melatonin production.
Because it can take many hours to eliminate caffeine from the body. Ohayon recommends that coffee lovers switch to decaf after lunch.
Ohayon advises coffee lovers
选项
A、to drink less coffee during the day.
B、to take decaf after lunch.
C、not to go to bed after taking coffee.
D、not to drink coffee after supper.
答案
B
解析
题意:奥哈永建议咖啡爱好者午餐之后喝低咖啡因的咖啡。短文最后一段提到“因为将咖啡因从体内排除需要几个小时的时间,奥哈永建议咖啡爱好者午餐之后就改换成低咖啡因咖啡”,故选B。
转载请注明原文地址:https://kaotiyun.com/show/Pj1d777K
本试题收录于:
职称英语卫生类C级题库职称英语分类
0
职称英语卫生类C级
职称英语
相关试题推荐
Today’scareerassumptionsareyoucangetalotofdevelopment,challengeandjobsatisfactionandnotnecessarilybeinamana
Therearemanydifferentreasonswhyfashionissuchapowerfulculturalandeconomicinfluenceindevelopedsocietiesatthebe
Therearemanydifferentreasonswhyfashionissuchapowerfulculturalandeconomicinfluenceindevelopedsocietiesatthebe
Therearemanydifferentreasonswhyfashionissuchapowerfulculturalandeconomicinfluenceindevelopedsocietiesatthebe
Inthe1920s,demandforAmericanfarmproductsfell,asEuropeancountriesbegantorecoverfromWorldWarIandinstitutedaus
Ifyouintendusinghumorinyourtalktomakepeoplesmile,youmustknowhowtoidentifysharedexperiencesandproblems.Your
FRIENDSHIP0Ibelievethatnothingmattersasmuchashavingacoupleofreallygood00friends.Theyhelpyoufeell
Ryanahasjustfinishedherbusinessdegree.Shewouldliketorelaxinaclean,quietcitywhichhasalonghistory.Jennyan
CancerChatisdifferentfromotherforumsinthat"Thecharity"inthelastlinebutonerefersto
随机试题
有30个2克的砝码和8个5克的砝码,如果砝码只能放一边,那么从2克到100克间的整数克质量,有多少个不能用这些砝码称量出来?
熔融时不仅要保证坩埚不受损失,而且还要保证分析的准确度。()
年轻律师张彬原住在某市A区,2004年因购买商品房迁入B区的牡丹园住宅小区,在2005年选举时,张律师发现自己的名字没有出现在小区公布的选民名单上,张律师决定依法维护自己的选举权,下列哪些说法或做法是正确的?()
[2006年,第71题]就正应力强度而言,图所示的梁,以下哪个图所示的加载方式最好?()。
目前加入FIDIC的国家和地区有(),统称FIDIC成员协会。
以银行存款缴纳所得税,所引起的变化为( )。
某股份公司因2009年度出现亏损,董事会提议2009F度暂缓发放优先股票股息,待以后盈利年度一并发放。根据上述描述,可知该公司的优先股属于()。
编制工作清单的工具和技术包括________。
在资本主义发展中,平均利润率有下降的趋势,因为( )
Всепошливкино,насосталосьтолько_____.
最新回复
(
0
)