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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】《西厢记艺术谈》中作者认为元杂剧《西厢记》中有两类矛盾，分别是崔莺莺、张生和（）之间的矛盾。
A.
老夫人、郑恒
B.
老夫人、红娘
C.
红娘、郑恒
D.
郑恒、孙飞虎