图为相互串联的甲、乙两电解池．试回答：

（1）若甲电解池利用电解原理在铁上镀银，则A是     （填电极材料），电极反应式       ；B（要求同A）是      ，电极反应式       ；应选用的电解质溶液是        。

（2）乙电解池中若滴入少量酚酞试液，开始电解一段时间，铁极附近呈   ，C极附近呈        。

（3）若甲电解池阴极增重4.32g，则乙槽中阳极上放出的气体在标准状况下的体积是          。

（4）若乙电解池中剩余溶液仍为400mL，则电解后所得溶液中新生成溶质的物质的量浓度为        mol•L^-1，溶液的pH等于        。

根据句意，用括号中所给词的正确形式填空。

1. Mr King learned Chinese as his _________ (two) language.

2. If you do your homework _________ (care), you will lose the exam again.

3. We should think about what we can do _________ (keep) animals and plants from becoming endangered.

4. —Did you go to Tom's birthday party? —No, I _________ (not invite)

5. We should do something to stop sandstorms from _________ (happen)

6. The man has known a lot of Chinese since he _________ (come) to China three years ago.

7. They _________ (not go) to the market until they finish their work.

8. The policeman said that he _________ (see) a Young Pioneer help an old woman cross the road

    the day before.