[题目1]一架飞机自东向西飞,则飞机上的“一天”比地面上“一天”24小时长或短?[解析]此题虽然题干描述简单,但却较难理清思路,学生在掌握中也容易混淆,常常得出错误答案。思路之所以不清,在于忽略了飞机飞行与地球自转的参照物不同。我们应该清楚飞机飞行时的参照物为地球,而 [Topic 1] When a plane flies from east to west, is the “one day” on the plane 24 hours longer or shorter than “one day” on the ground? [Analysis] Although the title description is simple, it is difficult to clarify the thinking. Students are also apt to be confused in mastering and often get wrong answers. The reason why the train of thought is unclear is that it ignores the difference between the plane’s flight and the earth’s rotation. We should be clear that the reference for the flight of the plane is Earth, and