第二部分：语言知识及应用（共两节，满分25分）
第一节完形填空 (共10小题；每小题1.5分，满分15分)
阅读下面短文，掌握其大意，然后从1—10各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Do you find getting up in the morning so difficult that it’s painful? This might be called 1 , but Dr. Kleitman has a new 2 . He has proved that everyone has a 3 energy cycle. During the hours when you 4 through your work you may say that you’re “hot”. That’s 5 . The time of day when you feel most 6 is when your cycle of body temperature is at its peak.
