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  3. Taking a coffee break at work may actually hinder employees’ ability to do their jobs and undermine teamwork instead of boosting

Taking a coffee break at work may actually hinder employees’ ability to do their jobs and undermine teamwork instead of boosting

admin2013-09-16  71
问题     Taking a coffee break at work may actually hinder employees’ ability to do their jobs and undermine teamwork instead of boosting it, suggests a new research.
    Dosing up on caffeine is particularly unhelpful to men,【C1】______their emotions and hampering their ability to do certain tasks,【C2】______a report by psychologists Lindsay St Claire and Peter Rogers at Bristol University in the UK.
    Many people take coffee breaks at work believing this will reduce their feelings of stress. But theories about the effects of caffeine are【C3】______. Some studies suggest caffeine can worsen anxiety and trigger stress,【C4】______others show it boosts confidence, alertness, and【C5】______, making certain tasks easier.
    But this latest report,【C6】______by the UK’s Economic and Social Research Council on Friday, 【C7】______the view that coffee worsens stress. 【C8】______in men. and makes people less co-operative when working in teams.
    St Claire and Rogers decided to【C9】______caffeine’s effects on work stress after hearing a story. A man described how he and a group of normally cooperative colleagues went【C10】______a business trip to the US.
    Unlike in the UK. coffee was freely【C11】______and the team over-indulged. Within days their stress had【C12】______and they believe the extra caffeine had disrupted their working relationships, and【C13】______their working ability.
    The Bristol team tested caffeine’s effects on 32 coffee-drinkers. They told them they would be given a caffeinated coffee that would【C14】______their performance. or a caffeinated coffee which causes stress-like side-effects, or decaffeinated coffee. However. 【C15】______to the volunteers, only half the drinks contained 200 mg of caffeine and the other half contained none. The【C16】______then carried out two stressful tasks.
    "Unexpectedly. men told their coffee ’contained caffeine, which enhances performance’ had higher heart rates and used less【C17】______coping strategies— that is showed more stress. " say the pair.
    They add that caffeine’s effects on men may be worse because men may feel more【C18】______or challenged by some tasks than women. and caffeine【C19】______their stress.
    St Claire warns against people being "tempted into having extra coffee". "And if you are【C20】______a business meeting, go a bit easy on the percolator(煮. 咖啡壶), or you might actually find weird things going wrong from your attempt at hospitality, " she adds.  
【C15】
选项 A、contrary
B、indifferent
C、unknown
D、adjustable
答案C
解析 形容词辨析题。此处意为“但是，志愿者不知情的是…”，故选unknown，be unknown to sb．意为“某人不知道的是…”。
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