题目

阅读理解 Garden parties are one of the traditions that began in the United Kingdom and France a number of centuries ago. Both the British and French versions have roots in the weekend getaways that were enjoyed by the upper classes. In the afternoons and evenings, the grounds of the estates (房产) would be softly lit with candles and lanterns, food prepared and set in long buffet tables for the guests, and comfortable seating always within reach. People tended to dress up for these types of outdoor events, which made them quite a festive occasion. String bands often provided a graceful m我市某天最高气温是80C，最低气温是-10C,那么当天的最大温差是    0C．