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  3. （中南大学2007年试题） The normal human daily cycle of activity is of some 7~8 hours’

（中南大学2007年试题） The normal human daily cycle of activity is of some 7~8 hours’

游客2025-04-15  21
问题 （中南大学2007年试题）
    The normal human daily cycle of activity is of some 7~8 hours’ sleep【1】with some 16-—17 hours’ wakefulness and that the sleep normally coincides【2】the hours of darkness. Our present【3】is with how easily and to what extent this【4】can be modified.
    The question is no mere academic one. The ease with【5】people can change from working in the day to working at night is a【6】of growing importance in industry where automation【7】round-the-clock working of machines. It normally【8】from five days to one week for a person to adapt to a【9】routine of sleep and wakefulness, sleeping【10】the day and working at night.【11】it is often the case in industry that shifts are changed every week. This【12】that no sooner has he got used to one routine【13】he has to change to another,【14】much of his time is spent neither working nor sleeping very【15】One answer would seem to be【16】periods on each shift, a month, or even three months.【17】, recent research has shown that people on such systems will revert to go back to their【18】habits of sleep and wakefulness during the week-end and that this is quite enough to destroy any【19】to night work built up during the week. The only real solution appears to be to hand over the night shift to those permanent night workers whose【20】may persist through all week-ends and holidays. [br] 【11】
选项 A、In comparison
B、In a word
C、Unfortunately
D、Therefore
答案 C
解析 本题考查对上下文的理解。上文提到“颠倒作息时间大约需要五天到一个星期”，而后文又说“在工厂里这种轮班工作经常是每周一换的”。工人们刚调整过来的作息时间又得换回去，这显然是“不幸地”。in comparison意为“比较”；in a word意为“总之”；therefore意为“因此，所以”，此三项意思上不符合原文，所以选C。
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