首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The normal human daily cycle of activity is some 7-8 hours’ sleep alternation with some 16-17 hours’ wakefulness and that the sl
The normal human daily cycle of activity is some 7-8 hours’ sleep alternation with some 16-17 hours’ wakefulness and that the sl
admin
2013-11-10
30
问题
The normal human daily cycle of activity is some 7-8 hours’ sleep alternation with some 16-17 hours’ wakefulness and that the sleep normally coincides(1)_____ the hours of darkness. Our present concern is how easily and to what extent this(2)_____ can be modified.
The question is not merely an academic one. The ease with which people can change from working in the day to working at night is a(3)_____ of growing importance in industry where automation (4)_____ round-the-clock working of machines. It normally(5)_____ from five days to one week for a person to adapt to a(6)_____ routine of sleep and wakefulness,(7)_____ during the day and working at night.(8)_____, it is often the case in industry that shifts are changed every week. This (9)_____ that no sooner has he got used to one routine(10)_____ he has to change to another, (11)_____ much of his time is spent neither working nor sleeping very(12)_____.
One answer would seem to be(13)_____ periods on each shift, a month, or(14)_____ three months.(15)______, recent research has shown (16)_____ people on such systems will go back to their(17)_____ habits of sleep and wakefulness during the weekend and that this is quite enough to destroy any(18)_____ to night work built up during the week. The only real solution appears to be to(19)_____ the night shift to those permanent night workers whose(20)_____ may persist through all week-ends and holidays.
(5)
选项
A、takes
B、spends
C、demands
D、asks
答案
A
解析
由句子主语it及空格后的from five days...week这个表时间的短语。可知此处为it takessome time to do...的句型,故答案选A。
转载请注明原文地址:https://kaotiyun.com/show/ZkGK777K
0
专业英语四级
相关试题推荐
Peopletaking"do-it-yourself"asawayoflifemaydothefollowingthingsEXCEPT
Thereasonwhybirdsdon’tgetlostonlongflights______.
Whatdoestheactivitywarnagainst?
Thelawyer______allaboutthecasebeforehedecidedtotakeitover.
SciencewriterTomStandagedrawsaptparallelsbetweenthetelegraphandthegemoflate20thcenturytechnology,theInternet.
SciencewriterTomStandagedrawsaptparallelsbetweenthetelegraphandthegemoflate20thcenturytechnology,theInternet.
Decidewhichofthechoicesgivenbelowwouldbestcompletethepassageifinsertedinthecorrespondingblanks.Formanype
Thecoursenormallyattracts20studentsperyear,______uptohalfwillbefromorient.
WhichofthefollowinggiftsmaybeonanormalChristmaswishlist?
随机试题
一项有效的仲裁协议通常应具备哪几个条件?
实务中,注册会计师可以采取哪些措施提高审计程序的不可预见性?
善于治疗气虚下陷诸证的腧穴是
下列叙述错误的是
房源价格波动经常随着市场状况、政策发布、城市发展规划、业主(委托方)心态的变化而不断波动,表明房源具有(),
关于电动机的起动。下面哪一条描述是正确的?(2005,108)
一个项目建成的标志是多方面的,主要包括()几方面。
下列选项中,不属于金融市场微观经济功能的有()。
非洲音乐的主要特点是节奏复杂多变。什么乐器在非洲音乐中有十分突出的地位?()
学习动机与学习效果的关系不是直接的,学习动机是通过()这一中介来影响学习效果的。
最新回复
(
0
)