题目

完形填空What do the people usually do on weekends? Some people like to 1 at home, but others like to go out for a walk or play football. Mr Smith 2 hard in a factory during (在期间) the 3 . On the weekends, he usually 4 the same thing. On Saturday he washes his car and on 5 he goes with his family to a village(村庄) by car. His uncle and aunt 6 a farm there. It isn't a big one, but there is always 7 to do on the farm. The children help with the animals and give them some 8 . Mr and Mrs Smith help in the field. At the end of the day, they are all 9 and Mr Smith's aunt 10 them a5．化学与生产、生活、社会密切相关，下列说法错误的是（　　）A．绚丽缤纷的烟花中添加了含钾、钠、钙、铜等金属元素的单质或化合物B．食用植物油的主要成分是高级脂肪酸甘油酯，是人体所需营养物质C．臭氧、高锰酸钾溶液、次氯酸钠溶液、乙醇溶液均可用于消毒杀菌，且原理相同D．PM2.5是指大气中直径小于或等于2.5微米的颗粒物，与肺癌等疾病的发生相关