3-variant choose the answer which correctly completes the sentence


B) were normally acquired through a period of apprenticeship


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3-VARIANT

B) were normally acquired through a period of apprenticeship

C) gained importance in the universities only after 1600

D) were acquired by nearly all university students


The effects of sleep loss are subject to a great many popular misconceptions. The belief that everyone must sleep 8 hours a night is a myth. According to the results of a recent survey on the subject, adults average about 7 to 7.5 hours of sleep per night, and many individuals function effectively with 5 to 6 hours of sleep. In fact, 30 percent of the population (slightly more in men) sleep less than 5 hours per night. Another significant fact is that sleep time decreases with age.


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