2021职称英语B【2017年职称英语考试理工类B级阅读试题及答案8】.doc
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1、2021职称英语B【2017年职称英语考试理工类B级阅读试题及答案8】职称英语网权威发布2017年职称英语考试理工类B级阅读试题及答案8,更多2017年职称英语考试理工类B级阅读试题及答案8相关信息请访问职称英语考试网。Easy LearningStudents should be jealous. Not only do babies get to doze their days away, but theyve also mastered the fine art of learning in their sleep.By the time babies are a year old th
2、ey can recognise a lot of sounds and even simple words. Marie Cheour at the University of Turku in Finland suspected that they might progress this fast because they learn language while they sleep as well as when they are awake.To test the theory, Cheour and her colleagues studied 45 newborn babies
3、in the first few days of their lives. They exposed all the infants to an hour of Finnish vowel sounds one that sounds like “oo”, another like “ee” and a third boundary vowel peculiar to Finnish and similar languages that sounds like something in between1. EEG2 recordings of the infants brains before
4、 and after the session showed that the newborns could not distinguish the sounds.Fifteen of the babies then went back with their mothers, while the rest were split into two sleep-study groups3. One group was exposed throughout their night-time sleeping hours to the same three vowels, while the other
5、s listened to other, easier-to-distinguish vowel sounds.4When tested in the morning, and again in the evening, the babies whod heard the tricky boundary vowel all night showed brainwave activity indicating that they could now recognise this new sound. They could identify the sound even when its pitc
6、h was changed, while none of the other babies could pick up the boundary vowel at all.Cheour doesnt know how babies accomplish this night-time learning, but she suspects that the special ability might indicate that unlike adults, babies dont “turn off” their cerebral cortex while they sleep. The ski
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