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
A、Because the number of the subjects was rather small. B、Because the significance of the survey was limited. C、Because the amoun
A、Because the number of the subjects was rather small. B、Because the significance of the survey was limited. C、Because the amoun
admin
2021-09-29
47
问题
Caffeine and napping have something in common.
They both make you feel alert and can enhance your performance, whether that’s driving, working or studying.
But some people are convinced that drinking a cup of coffee before taking a nap gives you extra energy when you wake up.
Drinking coffee can also help us get through the day. And since the 1990s, researchers have been studying how combining the two might help.
In a 1997 study, 12 sleep-deprived people drank the equivalent of one large cup of brewed coffee and five minutes later had the chance to nap for 15 minutes. They then did some driving tests in a simulator to check their alertness.
Although drinking a coffee (without a nap) helped their driving performance, combining caffeine with a nap—a coffee nap—improved it even further.
People who took a coffee nap were less likely to drift out of their lanes on a two-hour monotonous simulated drive.
This was compared to when they just drank a cup of coffee (and had no nap) or when they had a cup of decaffeinated coffee (and without a nap).
A coffee nap even helped performance if people dozed during their nap time rather than falling into a deeper sleep. A coffee nap also reduced sleepiness once people got up, with people remaining alert for a couple of hours.
However, this early, small study was questioned. For instance, we don’t know how much coffee the people in the study were used to drinking or if they were what researchers call caffeine-naive and so more likely to experience a greater caffeine "hit. "
Questions 9 to 11 are based on the passage you have just heard.
9.What did the 1997 study find about people who took a coffee nap?
10. What did the study find about the benefit of a coffee nap?
11.Why was the study questioned according to the speaker?
选项
A、Because the number of the subjects was rather small.
B、Because the significance of the survey was limited.
C、Because the amount of caffeine the subjects have was unknown.
D、Because the subjects’ sensitivity to caffeine was unknown.
答案
D
解析
短文最后提到,这个早期的小研究遭到了质疑。讲话者提到了两个例子:我们不知道研究对象平时习惯于喝多少咖啡,不知道他们是不是研究者所称的“初涉咖啡”而因此受咖啡因的影响更大。因此答案为D)。
转载请注明原文地址:https://jikaoti.com/ti/qkaFFFFM
0
大学英语六级
相关试题推荐
TheWorldCuphasbecomethemoststreamedlivesportingeventtheUShaseverseen,asAmericanstunedintothisyear’stourna
Inrecentyears,publishers,directorsandTVproducershavetakenakeeninterestinpopularonlinenovels,thankstotheirori
OnNovember16thanumberofwell-knownmusicianswereonhandtohelpmarkthelaunchofGoogle’snewonlinemusicservice.Al
Childrenwithattentionproblemsinearlychildhoodwere40%lesslikelytograduatefromhighschool,saysanewstudyfromDuk
A、GaininggreatfameontheInternet.B、Publishingacollectionofhisphotos.C、Collectingthebestphotosintheworld.D、Beco
IncreasedScreenTimeandWellbeingDeclineinYouthA)Haveyoungpeopleneverhaditsogood?Ordotheyfacemorechalleng
Thefutureofpersonalsatellitetechnologyishere—arewereadyforit?A)Satellitesusedtobetheexclusiveplaythingsof
A、Itwillbesmarterthanhumanbeings.B、Chipswillbeinsertedinhumanbrains.C、Itwilltakeawayhumans’jobsaltogether.D
Thedreamofpersonalisedflightisstillvividinthemindsofmanyinventors,somedevelopingcycle-poweredcraft,others【C1】_
A、Thecostofmakingpaper.B、Largemachinesandpaper-making.C、Thedevelopmentofpaper-making.D、Howtomakepaperbyhandto
随机试题
A.省药品监督管理部门不予受理或者不予批准,并给予警告,申请人在1年内不得再申请B.依法取缔,没收违法配制的制剂及违法所得,并处货值金额2~5倍罚款C.省药品监督管理部门应当吊销其《医疗机构制剂许可证》,并处1万元以上3万元以下的罚款,申请人在5年
()是内蒙古北部鄂伦春族人的传统节日,在每年的6月18日举行。
小导管注浆宜采用()
第四方物流要成功整合第三方物流企业,需要具备()。
人均可支配收入增长比人均消费支出增长慢的城市的个数是()。
在常见的分布式数据库参考模式结构中,存在多种分布透明性。关于分布透明性,下列说法错误的是()。
一网站创建时,输入的网站IP地址为192.168.1.1,网站的TCP端口为8080,网站的主机头为www.example.com。访问该网站时,在浏览器的地址栏中输入的可以是()。Ⅰ.www.example.ComⅡ.192.168.1.1
Hisjobwassotiringthathefeltabsolutely______.
AccordingtotheWorldHealthOrganization,malaria,adiseasespreadbymosquitoes,affectsmillionsofpeopleeveryyear.Ever
WilmaSubrahadnointentionofbecomingapublicspeaker.After【B1】______fromcollegewithdegreesinchemistryandmicrobiolog
最新回复
(
0
)