题目内容：
根据下列材料，回答题Do vou filld it very difficult and painful to get up in the morning?This m。ight be called laziness， but Dr．Kleitman has a new explanation．He has proved that everyone has a daily energy cycle.
During me hours when you labor through your work you may say that you’re“hot”·That’s tlue．The time of day when you feel most energetic is when your cycle of body temperature IS at its peak．For some people the peak comes during the forenoon．For others it comes in the afternoonor evening．No one has discovered why this is S0，but it leads to such familiar monologues as：“Get up，Peter!You，11 be late for work again!’’The possible explanation to the trouble is that Peter is at his temperatureandenergy peak in the evenin9．Much family quarrel ends when husbands and wives realize what these energy cycles mean，and which cycle each．member of the family has.
You can’t change your energy cycle，but you Can learn to make your life fit it better·Habit can help，Dr．Kleitman believes．Maybe you’re sleepy in the evening but feel you must stay up late anyway．Counteract your cycle to some extent by habitually staying up later than you want t0.If your energyislow in the morning，but you have all important job to do early in the day，rise before your usual hour．This won’t change your cycle，but you’11 9et up steam and work better at Your low
Point.
Get off to a slow start which saves your energy．Get up with a leisurely yawn and stretchsit On the edge of the bed a minute before putting your feet on the floor．Avoid the troublesonle search forcleanclothes by laying them out the night before．Whenever possible，do routine work in the aftemoon and save tasks requiring more energy or concentration for your sharper hours．
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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