We all know that the normal human daily cycle of some 7-8 hours sleep alternating with some 16-17 hours wakefulness and that, broadly speaking, the sleep normally coincides with the hours of darkness. Our present concern is win how easily and to what extent this cycle can be modified.
The question is no more academic one. The case, for example, with which people can change from working in the day to working at night is a question of growing importance industry where automation calls insistently for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed of sleep and wakefulness, sleeping during the day and working at night. Unfortunately it is often the case in industry that shifts are changed every week; a person may work from 12 midnight to 8 a.m. one week , 8 a.m. to 4 p.m. the next, and 4 p.m. to 12 midnight the third and so on. This means that no sooner has he got used to one routine than he has to change to another, so that much of his time is spent neither working nor sleeping very efficiently.
One answer would seem to be longer periods on each shift, a month, or even three months. Recent research by Bonjer of the Netherlands, however, has shows that people on such systems will revert to their normal habits of sleep and wakefulness during the week-end and that this is quite enough to destroy any adaptation to night work built up during the week.
The only real solution appears to be to hand over the night shift to a corps of permanent night workers whose nocturnal wakefulness may persist through all weekend and holidays. An interesting study of the domestic life and health of night-shift workers was carried out by Brown. She found a high incidence of disturbed sleep, digestive disorder and domestic disruption among those on alternating day and night shifts, but no abnormal occurrence of these symptoms among those on permanent night work.
1. The question raised in Paragraph 1 is no mere academic one
A)because Bonjers findings are different from Browns.
B)because sleep normally coincides with the hours of darkness.
C)because some people can change their sleeping habits easily.
D)because shift work in industry requires people to change the sleeping habits.
2. According to the passage, the main problem about night work is that
A) people hate the inconvenience of working on night shifts.
B) your life is disturbed by changing from day to night routines and back.
C) not all industries work at the same hours.
D) it is difficult to find a corps of good night workers.
3. According to the passage, the best solution on the problem seems to be
A) not to change shifts from one week to the next.
B) to make periods on each shift longer.
C) to employ people who will always work at night.
D) to find ways of selecting people who adapt quickly.
4. In the second paragraph, the third means
A) the third week
B) the third shift
C) a third of the time
D) the third routine
5. In the last sentence of the second paragraph, another means
A) another routine
B) another shift
C) another week
D) another person
key: DBCBA
SAT阅读考试应对策略三个
SAT阅读长难句分析五例
SAT长对比文章阅读答题原则5个
SAT阅读核心方法之社科类
SAT阅读初期备考用书五部
SAT文章阅读高级方法一个
SAT填空题分类解答方法介绍
SAT阅读小说:UNCLE SILAS系列(1)
根据语气词突破SAT填空题
分享我的SAT阅读经验
三大SAT阅读考试高分答题策略
SAT阅读考试快速答题小技巧
7道SAT完成句子练习题
SAT阅读长难句的特点和分析方法
SAT和托福阅读考试的异同点
SAT阅读文章类别小结
SAT填空题要求及备考方法
最根本的SAT阅读高分备考建议
快速解答SAT填空题需要注意什么?
SAT双短篇阅读的特点和应对技巧
SAT文章阅读为什么拿不到高分?
6道SAT阅读填空模拟题
SAT填空题考试要求及答题步骤
SAT填空题备考建议和答题步骤
攻克SAT阅读六大题型技巧
如何备考SAT阅读考试最有效率?
SAT填空题练习题七道
SAT阅读文章高分规律
SAT阅读答题高分定位词
怎样提高SAT阅读速度?
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |