Sleep
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
答案: DBCBA
婚期已定!哈里王子将于5月19日迎娶梅根!
葛浩文英译莫言的《变》:语义的不对等
2017年度中国媒体十大流行语发布 “十九大”“新时代”上榜
国际英语资讯:37 feared dead in massive shopping mall fire in the Philippines: vice mayor
国际英语资讯:Turkey welcomes UN resolution on U.S. Jerusalem decision
国内英语资讯:Chinas top legislature starts bi-monthly session, supervision law on agenda
内蒙古集宁一中西校区2017-2018学年高二第三次月考英语试卷
女人更喜欢看起来强壮点的男人
国际英语资讯:Macedonias opposition elects new leader
国内英语资讯:China underscores one-China principle as Gambian president visits
中国年轻一代对国家的未来充满自信
国际英语资讯:UN General Assembly adopts resolution on status of Jerusalem
国际英语资讯:Feature: Aleppo celebrates liberation anniversary amid huge public turnout
为什么星巴克的咖啡那么贵
这些迹象表明你的抑郁症越来越严重了
广场舞跳出千亿市场规模 中国大妈演绎美好新生活
The Unexpected Visit 突如其来的到访
国际英语资讯:Shotgun found in Chicago airport parking garage
World’s steepest railway line 世界上最陡峭的缆索铁路
体坛英语资讯:Guerrero cleared to play in World Cup after doping ban halved
体坛英语资讯:Sanya steps up efforts to build international sailing city
国内英语资讯:SW Chinese province steps up anti-poverty efforts
体坛英语资讯:Bayern overcome Dortmund 2-1 in German Cup
毒舌解析英国人的圣诞委婉语
一艘载客200多人的轮渡在菲律宾倾覆
MK、Jimmy Choo将停用皮毛,保护环境!
金曲MV放送:2017年最好听的十首歌(视频)[1]
外媒公布年度最糟糕的密码榜单,你中招了吗?
国际英语资讯:Constitutional issues internal matter of respective countries: British PM
国内英语资讯:PLA Naval Air Force conducts drills in West Pacific Ocean
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |