根据下列句子及所给单词的首字母，写出各单词的完全形式（每空限填一词）。

1. Of the twelve m_____ in the year, January comes first.

2. Jackie, do remember to wash your hands b_____ the meal!

3. Mary's suitcase was too heavy; Mike c_____ it upstairs for her.

4. I'd like to s_____ the last cake with you; you have half and I'll have half.

5. Mobile phones cost less now; they are much c_____ than they once were.

6. Many people believe that it is a good h_____ to get up early in the morning.

7. Shakespeare was b_____ on April 26, 1564 and died on the same day in 1616.

8. If something happens s_____, it happens quickly and unexpectedly.

某化学实验小组做了如下实验，请回答以下问题。

 

（1）图A所示实验可观察到“铁树”上浸有无色酚酞试液的棉团由白色变为红色，该实验说明：①                        ；②                        。

（2）图B所示实验，将注射器中氢氧化钠溶液注入瓶中，会看到的现象是      ，发生反应的化学方程式为                                  。

（3）图C所示，取一朵用石蕊试液染成紫色的干燥小花，将小花用水喷湿，放入集气瓶中，观察到的现象是         ，有关的化学方程式为                   。