单项选择题

According to tile passage, ______.

A．one should get up earlier if he wants to work better at his low point in the morning
B．one can change his cycle
C．whenever you feel hot, your energy cycle reaches the highest
D．your cycle must be in the morning if you can get up early

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单项选择题Which of the following can save your energy in the morning

A．Getting up late.
B．Jumping out of bed as quickly as possible.
C．Looking for clean clothes.
D．Sitting for a while before getting out of bed.