—____he going to stay at home?
—Yes, ____ ____.
—Would you please help me _______, Wang Fei? This question is too hard for me.
—OK. Let me have a try.
It________Sunday,I didn’t go to school.I helped my mom to clean the house.
下列知识归纳有错误的一组是( )
A 物质组成
B 化学与生活
苏打、纯碱化学式都是Na2CO3
蔗糖、葡萄糖、淀粉都属于糖类物质
酒精、汽油、液化气﹣﹣是易燃物
油锅着火、电器着火﹣﹣用水浇灭
C 物质与变化
D 食品与健康
煤的干馏、汽油燃烧﹣﹣是化学变化
碳铵与草木灰混用﹣﹣产生氨气而降低肥效
重金属中毒﹣﹣喝鸡蛋清解毒
人体缺碘﹣﹣多吃海带、紫菜、海鲜