题目

邢台市某天的最高气温是17℃，最低气温是－2℃，那么当天的温差是（）. A . 19℃ B . -19 ℃ C . 15℃ D . -15℃ 答案：AKeep hard and you will do better in the coming test.A. work B. workingC. to work D. works