直面成长烦恼，探究解决对策

成长中的我们，难免会有一些挥之不去的烦恼。有烦恼并不可怕，关键是要正确对待它。请你一起参加九年级（1）班组织的“成长的烦恼”探究学习活动吧。

如图是模拟海水制盐的流程：

（1）操作X的名称是____ ；

（2）实验①加入过量Ca（OH）₂溶液的目的是____ ；

（3）写出实验②发生的其中一个反应____ ；

（4）写出实验④发生的中和反应　____ ；

（5）粗盐水中氯化钠的质量____ 粗盐水中氯化钠的质量．（填＞、=、＜）

下列物体中，在通常情况下属于绝缘体的一组是（　　）

    Bill is an English boy. He is twelve. He lives in China with his family. There are four people in his family. They are his father Jack Cliton, his mother Catherine and his little sister Abby. He has a yellow dog. Its name is Barbi. His father is mending his bike. What is Bill doing? Ah, he is doing Chinese homework. He can't speak Chinese very well. But he loves Chinese very much. Bill's father works in middle school. He is an English teacher. His mother is in a TV factory. Bill and his sister go to the same school.