找出下列句子中的对应词，写在横线上。

1. My grandparents live in the village and we live in the city.  ______________

2. My father is very thin and my mother is very strong.  ______________

3. Our English teacher is very active but my math teacher is very quiet.  ______________

4. There is a big tree in front of the house and we often play games behind it.  ______________

5. The monkey has a long tail but the rabbit has a short one.  ______________

有盐酸、硫酸铜、纯碱、熟石灰四种物质，它们有关用途是①改良酸性土壤；②用于家庭蒸馒头；③农业上作杀菌剂；④金属表面除锈．按上述四种物质排列顺序，它们相应的用途正确的是（　　）

A．①②③④

B．④③②①

C．③④①②

D．④③①②