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
50
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
Specialistscallthefeelingswhichpeopleexperiencewhentheycometoan
LastmonthTomwentonholidaytoFrance.HecaughtthetrainfromLondonto
TheNewBusinessModelsA)Mostemergingcount
It’sperhapstheworld’smostfamousunderwaterattraction,immortalizedin
CSMA,althoughmoreefficientthanALOHA
A.溴丙胺太林 B.石杉碱甲 C.溴新斯的明 D.泮库溴铵 E.硝酸毛果
A.注意力缺陷,活动过度 B.中枢性运动障碍,姿势异常 C.发热、呕吐,脑膜
下列关于盆式绝缘子正确的说法是(____)。(A)新投运GIS采用带金属法兰的盆
病人哮证日久,反复发作,发时喉中痰鸣如鼾,声低,气短不足以息,咳痰清稀,面色苍白
甲公司是一家上市公司,企业所得税税率为25%,基准折现率为8%,相关资料如下:
最新回复
(
0
)