看图解决问题。

根据短文内容，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整，每空一词，每词限用一次。

    My name is Betty. I am twelve. I have some ____. We are middle school students. We are in Class Two, Grade Seven. This is Miss Green. She is an American teacher. She ____ us English. Her classes are very ____. We all like her.

    This is my new classroom. In the classroom you can see many ____ and chairs. A blackboard, a clock and a map ____ China are on the wall. On a desk, you can see some pencils. The red one is mine. The green one is ____.

    Look! You can see a ball under the desk. That's Kate's desk. The ball is____, too. This is my desk. You can see a ____on it.

有关水和溶液的知识是初中化学的重要内容．根据你所学的知识，回答下列问题：

（1）自来水厂净水的主要过程是沉淀、____ 、吸附、消毒，其中属于物理变化的是____．

（2）软化硬水的方法：家庭中常用____法，实验室中常用____法．

（3）在一定温度下，将少量的生石灰放入一定量的饱和石灰水中，搅拌、静默并冷却至原来温度．下列有关反应后溶液的说法正确的是____ ．

a．溶质质量增加      b．溶剂质量不变

c．溶液中溶质质量分数不变    d．溶解度增大