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【题目一】一架飞机在某纬线上以每小时15°的速度向东飞行,图1为飞机上观测到的某时段太阳高度变化曲线。读图回答1~2题。
【Topic One】 An aircraft flew eastward on a latitude at a speed of 15 ° per hour. Figure 1 shows the curve of the solar altitude observed in a certain period of time on an aircraft. Read the answer to 1 ~ 2 questions.