We have always been warned of the dangers of forest fires. They cause _____ 85 _____ to a forest. They kill many plants and animals in an eco-system, which is a group of living things and their environment. But have you ever heard of a forest fire that can be _____86_____  for a forest? People start some of the fires with a special reason to actually do good to the eco-system.
In fact, fires are a natural part of any eco-system. Without fires, the oldest and largest trees would stop sunlight from reaching the forest floor. Fires can _____87_____ some of these old trees. When the trees die, they provide something good for the earth. New trees can grow strong and healthy in their place.
Some trees even need fires to grow. These trees hold their seeds (种子) inside. Heat from a fire allows the coat of the seeds to open up. Then the seeds fall to the ground and have the _____88____ to grow/
Scientist, who know about nature’s needs, start some of these fires, called controlled burns. A fire is started and kept under control. This way, the fire does not spread out of the area or _____89_____ a after forest fires, they can go hungry _____90_____ their food has been damaged in the fire. Small, controlled fires mean than animals will not have to move far to find food. After some time, small plants begin to grow. Animals return soon after the plants return. This _____91_____  makes an eco-system.
So the next time you hear about a forest fire, think about the good as well as the bad. It may take a new eco-system a while to return, but it will likely come back stronger and healthier than ever.

Choose the words or expressions and complete the passage (选择最恰当的单词或词语，完成短文)
1．We have always been warned of the dangers of the forest fires. They cause     1   to a forest. They kill many plants and animals in an eco-system, which is a group of living things and their environment. But have you ever heard of a forest fire that can be     2    for a forest?
2．People start some of the fires with special reasons to actually do well to the eco-system.
3．In fact, fires are a natural part of any eco-system. Without fires, the oldest and largest trees would stop sunlight from reaching the forest floor. Fires can       3      some of these old trees. When the trees die, they provide something good for the earth. New trees can grow strong and healthy in their place.
4．Some trees even need fires to grow. These trees hold their seeds(种子) inside. Heats from a fire allow the coat of the seeds to open up. Then the seeds fall to the ground and have the 4 to grow.
5．Scientists, who know about nature’s needs, start some of these fires, called controlled burns. A fire is started and kept under control. This way, the fire does not spread out of the area or 5   a large space of the forest. Fires can be dangerous for animals. Even when animals continue to live after forest fires, they can go hungry   6    their food has been damaged in the fire. Small, controlled fires mean that animals will not have to move far to find food. After some time, small plants begin to grow. Animals return soon after the plants return. This   7 makes an eco-system.
6．So the next time you hear about a forest fire, think about the good as well as the bad. It may take a new eco-system a while to return, but it will likely come back stronger and healthier than ever.

1Choose the words or expressions and complete the passage (选择最恰当的单词或词语，完成短文)

1．We have always been warned of the dangers of the forest fires. They cause     1    to a forest. They kill many plants and animals in an eco-system, which is a group of living things and their environment. But have you ever heard of a forest fire that can be     2     for a forest?

2．People start some of the fires with special reasons to actually do well to the eco-system.

3．In fact, fires are a natural part of any eco-system. Without fires, the oldest and largest trees would stop sunlight from reaching the forest floor. Fires can       3       some of these old trees. When the trees die, they provide something good for the earth. New trees can grow strong and healthy in their place.

4．Some trees even need fires to grow. These trees hold their seeds(种子) inside. Heats from a fire allow the coat of the seeds to open up. Then the seeds fall to the ground and have the 4 to grow.

5．Scientists, who know about nature’s needs, start some of these fires, called controlled burns. A fire is started and kept under control. This way, the fire does not spread out of the area or 5    a large space of the forest. Fires can be dangerous for animals. Even when animals continue to live after forest fires, they can go hungry   6     their food has been damaged in the fire. Small, controlled fires mean that animals will not have to move far to find food. After some time, small plants begin to grow. Animals return soon after the plants return. This   7  makes an eco-system.

6．So the next time you hear about a forest fire, think about the good as well as the bad. It may take a new eco-system a while to return, but it will likely come back stronger and healthier than ever.

1.A. illness            B. difficulty       C. damage      D. flood

2.A. helpful            B. powerful         C. harmful     D. awful

3.A. take the place of  B. get ready for    C. be bad for  D. get rid of

4.A. time               B. water            C. chance      D. skill

5.A. discover           B. cover            C. but         D. waste

6.A. because            B. although         C. but         D. so

7.A. almost             B. again            C. never       D. even

单词拼写：根据句意和首字母拼写单词，或者用括号中给的单词的正确形式填空

1. At the e_______ of the fairy tale, the prince and princess lived happily ever after.

2. The advertisement says we’d better take our o________ shopping bag to the supermarket, for it is good for our environment.

3. ---“It seems Tom never gets tired.”

---“Yes, he’s always full of e________.”

4. At the Spring Festival, Chinese people often visit their r_________ and have a get-together.

5. On the Internet, there were plenty of _________(报道) about how the cruel man _______(杀) cats for fun.

6. As the sun was shining b_________, the driver had to wear his sunglasses.

7. He has such a bad temper(脾气) that f_______ people are willing to make friends with him.

8. The little boy tried to _________ (捉住) the butterfly, but failed.

9. A_________ is a country famous for its pleasant environment and special animals, like the kangaroo and the koala bear.

10. Before sleep, the housekeeper(管家) would make sure the door was shut and _________(吹) out the candle.

We have always been warned of the dangers of forest fires. They cause _____ 85 _____ to a forest. They kill many plants and animals in an eco-system, which is a group of living things and their environment. But have you ever heard of a forest fire that can be _____86_____  for a forest? People start some of the fires with a special reason to actually do good to the eco-system.

In fact, fires are a natural part of any eco-system. Without fires, the oldest and largest trees would stop sunlight from reaching the forest floor. Fires can _____87_____ some of these old trees. When the trees die, they provide something good for the earth. New trees can grow strong and healthy in their place.

Some trees even need fires to grow. These trees hold their seeds (种子) inside. Heat from a fire allows the coat of the seeds to open up. Then the seeds fall to the ground and have the _____88____ to grow/

Scientist, who know about nature’s needs, start some of these fires, called controlled burns. A fire is started and kept under control. This way, the fire does not spread out of the area or _____89_____ a after forest fires, they can go hungry _____90_____ their food has been damaged in the fire. Small, controlled fires mean than animals will not have to move far to find food. After some time, small plants begin to grow. Animals return soon after the plants return. This _____91_____  makes an eco-system.

So the next time you hear about a forest fire, think about the good as well as the bad. It may take a new eco-system a while to return, but it will likely come back stronger and healthier than ever.

1.A) illness     B) difficulty      C) damage       D) flood

2. A) helpful    B) powerful      C) harmful       D) awful

3. A) take the place of    B)  get ready for     C)  be bad for      D) get rid of

4.A) time       B) water       C) chance       D) skill

5.A) discover    B) cover       C) but          D) waste

6. A) because    B) although      C) but         D) so

7.A) almost     B) again        C) never      D) even