第8题: [单项选择]One characteristic of weather maps not mentioned by the author in this passage is ______. A. wind speed B. thermal changes C. fronts D. barometric pressure 参考答案:B 答案解析:本文在第一段第二句中列举了从气象图上可以确定的信息,其中“the speed of air masses”即A选项,“fronts”即C选项,“whether an individual pressu