单项选择题
A．Unawareness of energy cycles. B．Familiar monologues. C．A change in a family member's energy cycle. D．Attempts to control the energy cycle of other family members.
A．he is a lazy person B．he refuses to follow his own energy cycle C．he is not sure when his energy is low D．he is at his peak in the afternoon or evening
A．their academic performance will affect their future careers B．they are heavily involved in student affairs C．they have to observe university discipline D．they want to run for positions of authority