17．Do you find getting up in the morning so difficult that it's painful？This might be called laziness，but Dr．Kleitman has a new explanation．He has proved that everyone has a daily energy cycle．
During the hours when you labor through your work you may say that you're"hot"．That's true．The time of day when you feel most energetic is when your cycle of body temperature is at its peak，F(xiàn)or some people the peak comes during the forenoon．For others it comes in the afternoon or evening．No one has discovered why this is so，but it leads to such familiar monologues （自言自語）as："Get up，John!You'll be late for work again!"The possible explanation to the trouble is that John is at his temperature-and-energy peak in the evening．Much family quarrelling 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（對抗）your cycle to some extent by habitually staying up later than you want to．If our energy is low in the morning but you have an important job to do early in the day，rise before your usual hour．This won't change your cycle，but you'll get 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 stretch．Sit on the edge of the bed a minute before putting your feet on the floor．Avoid the troublesome search for clean clothes by laying them out the night before．Whenever possible，do routine work in the afternoon and save tasks requiring more energy or concentration for your sharper hours．
86．If a person finds getting up early a problem，most probablyD．
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
87．If one wants to work more efficiently at his low point in the morning，he shouldA．
A．change his energy cycle
B．overcome his laziness
C．get up earlier than usual
D．go to bed earlier
88．You are advised to rise with a yawn and stretch because it willA．
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
89．Which of the following statements is NOT TRUE？B
A．Getting off to work with a minimum effort helps save one's energy．
B．Dr．Kleitman explains why people reach their peaks at different hours of day．
C．Habit helps a person adapt to his own energy cycle．
D．Children have energy cycles，too．
分析 這是一篇說明類文章．通過Dr．Kleitman解釋的人類日常的能量周期來告訴人們合理利用個人不同的能力高峰期和低谷期來合理的安排自己的工作和生活．
解答 86．D 細(xì)節(jié)題．由第一段第二行might be called laziness可能被稱為懶惰可以知道答案，所以選D．
87．A 考查細(xì)節(jié)分析．根據(jù)第三段"If your energy is low in the morning but you have an important job to do early in the day，rise before your usual hour．This won't change your cycle，but you'll get up steam （打起精神） and work better at your low point．"如果你早上的精力很低，但是你有一個重要的工作要做，那就在平時之前起床．這不會改變你的周期，但你得到了更好的精神可知，A為正確答案．
88．A 考查推斷能力．根據(jù)倒數(shù)第二段和最后一段"Begin with a slow start which saves your energy．Get up with a slow yawn and stretch．"可知，早起放慢動作是為了白天的工作節(jié)省能量，所以正確答案為A．
89．B 細(xì)節(jié)題，由第二段最后一句Much family quarrelling ends when husbands and wives realize what these energy cycles each member of the family has當(dāng)丈夫和妻子意識到家庭成員的這些能量循環(huán)時，許多家庭爭吵就結(jié)束了．可以知道答案，所以選B
點(diǎn)評 本文是一個人物故事類閱讀理解，題目涉及多道細(xì)節(jié)理解題，做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進(jìn)行仔細(xì)分析，結(jié)合選項選出正確答案．推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案，切忌胡亂猜測，一定要做到有理有據(jù)．
