单词拼写.根据下列句子及所缺单词的首字母或汉语意思,写出单词的正确形式.

1. A ________ (化学的) change takes place in paper when it burns.

2. We must r________ ourselves of these old ideas.  

3. Not having had food for over forty hours, we were all weak from h_________.

4. Because of the heavy rain the l________ of the lake has risen 6 inches.

5. It was a new form of ________ (细菌) and nobody knew how it would affect humans.

6. The cookies are made from g________ and fruit.  

7. Farmers consider rabbits to be p________, because they destroy some crops they grow.

8. The violent film is not ________(合适的) for children.

9. This food provides the ________(营养) your dog needs.

10. The average ________(产量) of the factory is 20 cars a day.