单项选择题

If a person finds getting up early a problem, most probably ______.

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

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单项选择题

Which of the following may lead to family quarrels according to the passage ______.

A．Unawareness of the 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

单项选择题

You are advised to rise with a yawn and stretch because it will ______.

A．help to keep your energy for the day's work
B．help you to control your temper early in the day
C．enable you to concentrate on your routine work
D．keep your energy cycle under control all day