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
58
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 does not wake you up.
B、It stimulates your nerves.
C、It supplies nutrition for brain.
D、It makes you more tired.
答案
A
解析
推理判断题。本文开头指出,很多人声称每天早上必须喝杯咖啡才能让大脑清醒,但是研究人员指出,咖啡因的刺激效果恐怕是一种错觉。由此可以推断,咖啡不会让大脑清醒。
转载请注明原文地址:http://tihaiku.com/zcyy/3600130.html
相关试题推荐
[originaltext]Supposesomeoneinventedagiftcardsoversatile(多功能的)that
[originaltext]Overthepastsixweeks,Nicky,42,hascutherdailyroutine
[originaltext]Overthepastsixweeks,Nicky,42,hascutherdailyroutine
[originaltext]M:(22)Thankyouforcomingtodaytotalkaboutthenewrecyclin
[originaltext]W:You’rebusyrunningtheFamiliesandWorkInstitute.(23)Whyd
[originaltext]W:You’rebusyrunningtheFamiliesandWorkInstitute.(23)Whyd
[originaltext]W:Hi,Tom.Haveyoubeenplayingmuchbasketballlately?M:Ipl
[originaltext]W:Hi,Tom.Haveyoubeenplayingmuchbasketballlately?M:Ipl
[originaltext]W:Hi,Tom.Haveyoubeenplayingmuchbasketballlately?M:Ipl
[originaltext]W:Hi,Tom.Haveyoubeenplayingmuchbasketballlately?M:Ipl
随机试题
I’msureyoursuggestionwill______theproblem.A、contributetosolveB、becontri
[A]sturdy[I]explanation[B]vessels[J]consequences[C]Previously[K]na
平时我们所讲的举一反三,闻一知十等属于以下哪种迁移?( )A.顺就迁移 B.同
某内部审计师对赊销环节的批准和监督情况进行审计,在发现的下列行为中,属于内部控制
根据压缩机类型不同,常见的水冷压缩式冷水机组可分为( )。A.活塞式冷水机组
胃痛的辨证要点是A.辨疼痛部位 B.辨疼痛性质 C.辨病程新旧 D.辨虚实
医务人员在确定辅助检查项目后,必须做到A.向病人解释清楚检查的危险性 B.只要
属于钙通道阻滞剂的是A.氯沙坦B.非洛地平C.甲基多巴D.美托洛尔E.卡托普利常
口角的正常位置相当于A.第二前磨牙与第一磨牙之间 B.第一前磨牙与第二前磨牙之
项目经理在承担项目施工管理过程中,在企业法人的授权范围内.可以行使的管理权力有(
最新回复
(
0
)