pattern will only gradually go back to match the new routine and the speed with
which it does so parallels, broadly speaking, the adaptation of the body as a whole, particularly
in terms of performance. Therefore, by taking body temperature at intervals of two hours
throughout the period of wakefulness it can be seen how quickly a person can adapt to a re-
versed routine, and this could be used as a basis for selection. So far, however, such a form of se-
lection does not seem to have been applied in practice.
36. Why is the question of "how easily people can get used to working at night" not a mere a-
cademic question?
A) Because few people like to reverse the cycle of sleep and wakefulness.
B) Because sleep normally coincides with the hours of darkness.
C) Because people are required to work at night in some fields of industry.
D) Because shift work in industry requires people to change their sleeping habits.
37. The main problem of the round - the - clock working system lies in
A) the inconveniences brought about to the workers by the introduction of automation
B) the disturbance of the daily life cycle of workers who have to change shifts too
frequently
C) the fact that people working at night are often less effective
D) the fact that it is difficult to find a number of good night workers
38. The best solution for implementing the 24 - hour working system seems to be
A) to change shifts at longer intervals
B) to have longer shifts
C) to arrange for some people to work on night shifts only
D) to create better living conditions for night workers
39. It is possible to find out if a person has adapted to the changes of routine by measuring his
body temperature because
A) body temperature changes when the cycle of sleep and wakefulness altermates
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
40. Which of the following statements is NOT TRUE?
A) Body temperature may serve as an indication of a worker's 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.
Part II Vocabulary and Structure (20 minutes)
41. You should have put the milk in the ice-box; I expect it _____ undrinkable by now.
A) became B) had become C) has become D) becomes
42. Codes are a way of writing something in secret; _____ , anyone who doesn' t know the
code will not be able to read it.
A) that is B) worse still C) in short D) on the other hand
43. His long service with the company was _____ with a present.
A) admitted B) acknowledged C) attributed D) accepted
44. The atmosphere is as much a part of the earth as _____ its soils and the water of its
lakes, rivers and oceans.
A) are B) is C) do D) has
45. Our house is about a mile from the station and there are not many houses _____
A) in between B) among them C) far apart D) from each other
46. The drowning child was saved by Dick's _______ action.
A) acute B) alert C) profound D) prompt
47. Children and old people do not like having their daily _________ upset.
A) habit &
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