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閱讀理解：
During the hours when you labour 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.For some people the peak comes during the morning.For others it comes in the afternoon or evening.No one has discovered why this is so,but it leads to such familiar monologues 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.
Which of the following may lead to family quarrels according to the passage?
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.
正確答案：A
答案解析：本題的關(guān)鍵是看懂本段的最后一句（即："Much family quarrelling ends when husbands and wives realize what these energy cycles mean，and which cycle each member of the family has.")，同時聯(lián)系本段的第四句和第五句（即："For some people the peak comes during the morning.For others it comes in the afternoon or evening.")的意思。該句的直接意思是"如果丈夫和妻子能明白能量周期是怎么回事，以及家庭每個成員有什么樣的周期，很多家庭爭吵就會停止。"也就是說，家庭爭吵的發(fā)生是因?yàn)檎煞蚝推拮硬涣私饽芰恐芷谑窃趺椿厥�，更談不上了解每個家庭成員有什么樣的能量周期了。因此A項：Unawareness of energy cycles（不知道能量周期)應(yīng)是正確答案。
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