题目

Most Chinese people these days know what it is like to have an “English teacher”, since almost all pupils study English from their third year. Usually that first English teacher will be a young and lovely lady in primary school. But my first English teacher is no other than my father. Looking back, I can see that, when I was only a little girl, he created an English environment by providing me with flashcards（识字卡），fun English- language toys and even dolls which can sing English songs! My interest in English had certainly been awakened（唤起） when I began to learn English a某垃圾处理厂对生活垃圾进行处理与综合利用的部分流程如图：资料1：垃级焚烧产生的烟气中含有SO2等有害气体。资料2：FeSO4容易被空气中的O2氧化。回答下列间题：（1）石灰浆吸收SO2（性质与CO2相似）的化学方程式为______________________。（2）溶解步骤中同时发生了三个化学反应，其中一个反应的化学方程式为： Fe＋Fe2(SO4)3＝3FeSO4，再写出其中一个：______________________________________。（3）将所得FeSO4溶液在氮气环境中蒸发浓缩、___________、过滤，得到FeSO4晶体，其中氮气的作用是____________________________________________________________。（4）政府倡导垃圾分类，其好处是（写一点）：_____________________________。