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
2024-05-15
67
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. 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
信息明示题。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/3600132.html
相关试题推荐
[originaltext]Theworld’ssmartestadolescentsinmathematicsandsciencea
[originaltext]InBritainthereare11nationaldailynewspapersmidmostpe
[originaltext]InBritainthereare11nationaldailynewspapersmidmostpe
[originaltext]InBritainthereare11nationaldailynewspapersmidmostpe
[originaltext]M:Weseemtobehavingthisconversationoverandoveragain.W:
[originaltext]M:Weseemtobehavingthisconversationoverandoveragain.W:
[originaltext]M:Hey,Amy,whereareyouoffto?W:TotheRecreationCenter.I
[originaltext]W:I’mreallylookingforwardtothistripwithourgeologyclass
[originaltext]W:I’mreallylookingforwardtothistripwithourgeologyclass
[originaltext]Yuppiesareyoungpeoplewhocamalotofmoneyandliveina
随机试题
[originaltext]ThereissayinginAmericaneducationalcirclesthatHarvard
Cheatingisnothingnew.Buttoday,educatorsandadministratorsarefinding
[originaltext]Bodylanguage,especiallygestures,variesamongcultures.Fo
关于建设工程超过合理使用年限后需要继续使用的说法,正确的是()。A.经过勘察、
下列关于法的本质和特征的表述中,正确的有()。A、法具有国家强制性 B、法反
如果企业销售收入增长足够快,且核心流动资产的增长主要是通过短期融资实现的,则需要
下列属于商业银行的非利息收入的业务是()。A.个人贷款业务 B.托管、支付结
甲、乙为劫取财物将在河边散步的丙杀死,当场取得丙随身携带的现金2000余元。甲、
根据《建筑安装工程费用项目组成》(建标[2013]44号文),建筑安装工程措施项
在网络计划中,工作N最迟完成时间为第25天,其持续时间为6天。该工作三项紧前工作
最新回复
(
0
)