首页
登录
职称英语
[originaltext] Many say their brain doesn’t start working properly in the mo
[originaltext] Many say their brain doesn’t start working properly in the mo
游客
2023-09-04
55
管理
问题
Many say their brain doesn’t start working properly in the morning until they have had a cup of coffee. (30)But the stimulating effect for which caffeine is famous may be an illusion, say researchers. Those who drink a lot of coffee may feel more alert after their first cup of the day. But this is probably because it reverses the fatiguing effects of overnight caffeine withdrawal, say the researchers. (31)Their study suggests coffee drinkers may actually be better off without their habitual morning mug as it raises the risk of anxiety and high blood pressure. In the study, 379 people who abstained from caffeine for 16 hours before drinking either caffeine or a placebo (安慰剂) were tested for a range of responses afterwards. The Bristol University researchers found little variance in levels of alertness among the volunteers. Around half the volunteers drank little or no caffeine and the other half were medium-high caffeine consumers. All were asked to rate their levels of anxiety and alertness and whether they had a headache before and after being given the caffeine or the placebo. They were also asked to carry out a series of computer tasks to test their levels of memory, attentiveness and vigilance. The medium-high caffeine consumers who received the placebo reported a fall in alertness and an increase in headaches, neither of which were reported by those who received caffeine. However, their post-caffeine levels of alertness were no higher than those of no or low-level consumers received a placebo. (32) This suggests caffeine only brings coffee drinkers back up to "normal."
30. What does the passage say about coffee?
31. What does the study suggest coffee drinkers do?
32. What does the study say about caffeine?
选项
A、It shows great variance in levels of alertness among volunteers.
B、It proves that coffee improves memory and attentiveness.
C、It suggests that caffeine only brings drinkers back up to normal.
D、It indicates that coffee drinking is addictive.
答案
C
解析
事实细节题。短文最后明确指出,该研究表明咖啡因只不过使喝咖啡的人回到正常状态而已。
转载请注明原文地址:https://tihaiku.com/zcyy/2984880.html
相关试题推荐
Peopleimproperlydressedwillnotbe______tothishotel.A、acceptedB、permitte
[originaltext]TheUKgovernmentisproposingagraduatetaxforstudentsin
[originaltext]TheUKgovernmentisproposingagraduatetaxforstudentsin
[originaltext]TheUKgovernmentisproposingagraduatetaxforstudentsin
[originaltext]TheUKgovernmentisproposingagraduatetaxforstudentsin
[originaltext]JaneAldridgehopedtogetafewreaderswhenshestartedas
[originaltext](30)MillionsofyoungstersacrossEuropecouldsufferpermane
[originaltext]W:(19)Youareon"JustOneThing"today.Dr.LawrenceRosenis
[originaltext]W:(19)Youareon"JustOneThing"today.Dr.LawrenceRosenis
[originaltext]W:(19)Youareon"JustOneThing"today.Dr.LawrenceRosenis
随机试题
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]Q:Howmanypeoplewillattendthemeeting?[/originaltext]A、About
[originaltext]W:Janemissedtheclassagain,didn’tshe?Iwonderwhy?M:Well
下列关于球墨铸铁管道铺设施工的说法中,表述正确的是()。A.接口工作坑每隔一个
用于眼部的散剂应通过A.4号筛 B.5号筛 C.6号筛 D.7号筛 E.
乙酰胆碱作用消失主要依赖A.胆碱酯酶水解B.摄取C.排泄D.胆碱乙酰转移酶的作用
下列各句中,加点的成语使用不恰当的一项是()。A. B. C. D.
根据《幼儿园工作规程》幼儿园品德教育的主要内容是( )。A.纪律教育和培养遵纪
房地产开发项目的全寿命周期包括()等阶段。A:项目前期策划 B:规划设计 C
设高温热源的热力学温度是低温热源的热力学温度的n倍,则理想气体在一次卡诺循环中,
最新回复
(
0
)