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BMAT考试练习题:
It has been shown that most people are either‘Night Owls’, who describe themselves as naturally more active and alert in the
evening, or‘Morning
Larks’, who
wake early and become less alert once daylight decreases. These patterns are
linked to changes in the levels of the hormone melatonin (which is associated with
feelings of sleepiness). Those who follow a‘Morning Lark’pattern showhigh levels of melatonin early in the evening and low levels by the earlymorning, with the opposite being true in‘Night Owls’with higher levels of melatoninstill present in the morning after waking. Therefore employers should allow forflexible working hours to accommodate people’s sleep patterns
Which one of the following, if true, most weakensthe above argument?
A Melatonin levels rise and fall as a result of‘Owl’or‘Lark’behaviour.
B Melatonin tablets have been used to treat jet-lagby adjusting the sleepwake cycle.
C Changing patterns of shift-work have a negativeeffect on health.
D The amount that we sleep usually changesthroughout our lifespan.
E Analysis of changes in body temperature have
shown that shift workers’bodies take a long time to adjustto changes in routines.
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