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【单选题】第二篇 Sleep We all know that the normal human daily cycle of activity is of some 7 - 8 hours’ sleep alternating with some 16 - 17 hours’ wakefulness and that, broadly speaking, the sleep n...
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.
【单选题】维基百科上说：“博尔顿和瓦特成为合伙人后，博尔顿倾其精力和财力使瓦特的蒸汽机梦想成为现实，并在1775年通过国会将瓦特的专利保护从1769年延长到1799年。”这本质上体现了（）
A.
经济利益驱动着工业革命
B.
专利制度推动科技成果的推广
C.
新技术的推广需要志同道合的帮助
D.
蒸汽机的发明促进了经济垄断