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现行人教版最新八年级《数学》(上)中,有三次提到一日之内气温随时间变化情况．第一次是在第11页以观察问题的形式出现,特别指出“一天中凌晨4时气温最低(-3℃),14时气温最高(8℃),第二次是在第16页,以练习题的形式让比较上海与北京的气温．从图中可以看出是凌晨4时气温最低,分别
In the current eighth grade mathematics (the first) of the People’s Education Press, there are three references to changes in temperature over time within a day. The first time was on page 11 in the form of an observation question, noting that “the temperature is lowest at -4°C in the morning at 4am, the highest temperature is 8°C at 14:00, and the second time is at 16°. The format of the exercises allows comparison of temperatures in Shanghai and Beijing. It can be seen from the figure that the temperature is the lowest at 4am, respectively.