WhatarethetargetconsumersofDigitalPowerShot$230camera？[A]Youngwhite-collarmen．[B]Middle-ag

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• 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. (1) A．allegation B．alternation C．allocation D．alternative

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• 先进的社会意识之所以能对社会的发展起促进作用，是因为（）。

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• 甲和乙准备设立经营烟花爆竹的生产经营的有限责任公司，甲出资20万元，乙出资价值40万元的机器设备。公司设立登记后在经营过程中发现乙的机器设备价值只有20万元。则以下关于甲和乙设立的有限责任公司成立日期说法正确的是（）。

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• 在设备采购合同中，因买受人原因致使设备不能按照约定期限交付的，买受人应当自（）之日起承担标的物毁损、灭失的风险。

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• 只有农民生活水平提高了，才能搞好农村基层民主建设，保持农村社会稳定。由此可 见（）。

  A. 如果农村社会稳定，基层民主建设搞好了，那么农民生活水平一定提高了 B. 只要农民生活水平提高了，就能搞好农村基层民主建设，保持农村社会稳定 C. 如果农村社会稳定，农民生活水平提高了，那么农村基层民主建设一定可以搞好 D. 而今农民生活水平提高了，可见农村社会稳定，农村基层民主建设搞好了

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