A. body temperature changes when the cycle of sleep and wakefulness alternates
B. body temperature changes when he changes to night shift or back
C. the temperature reverses when the routine is changed
D. people have higher temperatures when they are working efficiently
30. Which of the following statements is NOT TRUE?
A. Body temperature may serve as an indication of a workers performance.
B. The selection of a number of permanent night shift workers has proved to be the best solution to problems of the round-the-clock working system.,
C. Taking body temperature at regular intervals can show how a person adapts to the changes of routine.
D. Disturbed sleep occurs less frequently among those on permanent night or day shifts.
26. D 27. B 28. C 29. D 30. B
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