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刷刷题刷刷变学霸
举一反三
【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.
【多选题】如果鲜叶杀青适度,具有以下特征( )。
A.
叶色由鲜绿转为暗绿，不带红梗红叶
B.
叶质柔软，嫩茎梗折而不断
C.
略有粘性，紧捏叶子成团，稍有弹性
D.
青草气消失，略带茶香。