1 . I am worried about the air in the city because the smoke makes it difficult for many people to ________.

A．spread

B．breathe

C．pollute

D．destroy

2 . 根据提示按顺序写出单词Created using the Crossword Maker on TheTeacherscamer.net
Across
4. to make a very loud, high-pitched cry, for example because they are in pain or are very frightened.
5. an extremely large mass of ice which moves very slowly, usually seen in the Arctic
6. be worth a lot of money
8. to cause much damage to something
10. to go under the surface of the sea or a lake, using special breathing equipment.
Down
1. belonging to the area where you live, or to the area that you are talking about.
2. to prevent something from being harmed or damaged.
3. the science which is all about the study of living things.
7. something has become very hard because the weather is very cold.
9. to find a solution or an answer to a problem

3 . Don't throw away the waste paper. It needs ________ so that it can be reused.

A．to destroy

B．destroying

C．to collect

D．collecting

4 . People can’t continue __________ (destroy) the forests to build houses.

5 . Countless buildings were ________ during the WenChuan earthquake.（destruction）

6 . A number of forests ______(destroy) in many parts of the world in the past few years.

7 . The soldiers tried many ways to prevent the flood from________ the roads and fields.

A．destroy

B．to destroy

C．destroying

D．destroyed

8 . Most of the people in the south of China enjoy drinking tea because tea is ________ mainly in that area.

A．carried

B．answered

C．destroyed

D．produced

9 . Don’t throw away the waste paper. It needs _________ so that it can be reused.

A．to destroy

B．collecting

C．to collect

D．destroying