一、试题设计居住在河北张家口的小明和小亮在“寻找最佳滑雪地”的课外研究中发现,张家口市从每年10月中下旬开始降雪,11月到来年4月初是当地的雪季,常年平均降雪量为384.7毫米。分析张家口过去十年的气象数据可知,张家口的降雪量能够满足举办冬奥会滑雪比赛的要求。滑雪的适宜温度在-10℃~-15℃,如果温度过低,雪的硬度不但不利于运动员成绩的提升,而且还会对运动员的身体造成损害。图1示意张家口在我国北方地区的位置,图2示意北京到张家口的交通距离。 First, the test design Living in Zhangjiakou, Hebei Xiaoming and Xiaoliang in “Looking for the best skiing ” Extracurricular studies found that Zhangjiakou City from the beginning of late October each year snowfall, November to early April next year is the local snow Quarter, the average annual snowfall of 384.7 mm. Analyzing the weather data of Zhangjiakou in the past ten years shows that the amount of snowfall in Zhangjiakou can meet the requirements for hosting the Winter Olympics skiing competitions. The optimum temperature for skiing is -10 ℃ ~ -15 ℃. If the temperature is too low, the hardness of snow is not only not conducive to the improvement of athletes ’performance, but also the athletes’ body will be damaged. Figure 1 shows the location of Zhangjiakou in northern China, Figure 2 shows the traffic distance from Beijing to Zhangjiakou.