Fire can help people in many ways. But it can also be very harmful. Fire can make water hot and house warm, give light and cook food. But fire can burn (燃烧) things, too. It can make trees, houses, animals and other things catch fire (起火). If some people can't run away from fire, it can kill them. This happens in every country every year.

Sometimes big fire can burn forests. A month ago, a large forest fire broke out in Yunnan Province. It lasted nearly half a month. The forest in Heilongjiang Province and the grassland in Inner Mongolia caught fire in May, 2006. After more than ten days' fight, over 30,000 people and soldiers put out (扑灭) the fire at last.

Nobody knows clearly when people began to make fire, but there are many interesting stories about the first time a man or a woman started a fire. One story from Australia tells about a man who went to the sun and brought fire down a long time ago. Today people know how to make a fire with matches (火柴). Children sometimes like to play with them. But matches can be very dangerous. The match can burn a piece of paper and then it can burn a house. A small fire can become a big fire, and destroy many things. Fire kills many people every year. So you must be careful with fire.

1.The main idea of the passage is that _________.

2.Matches can be dangerous because _________.

3.The word “destroy” in the passage means ________in Chinese.

4.The writer of the passage wants to tell us that ________.

Fire can help people in many ways. But it can also be very harmful. Fire can make water hot and house warm, give light and cook food. But fire can burn (燃烧) things, too. It can make trees, houses, animals and other things catch fire (起火). If some people can't run away from fire, it can kill them. This happens in every country every year.
Sometimes big fire can burn forests. A month ago, a large forest fire broke out in Yunnan Province. It lasted nearly half a month. The forest in Heilongjiang Province and the grassland in Inner Mongolia caught fire in May, 2006. After more than ten days' fight, over 30,000 people and soldiers put out (扑灭) the fire at last.
Nobody knows clearly when people began to make fire, but there are many interesting stories about the first time a man or a woman started a fire. One story from Australia tells about a man who went to the sun and brought fire down a long time ago. Today people know how to make a fire with matches (火柴). Children sometimes like to play with them. But matches can be very dangerous. The match can burn a piece of paper and then it can burn a house. A small fire can become a big fire, and destroy many things. Fire kills many people every year. So you must be careful with fire.
【小题1】The main idea of the passage is that _________.

阅读：

　　Peter was a small boy．He lived with his parents in a small house near some hills．The people there were all poor． One night it was very dry and windy． When everybody was asleep, Peter suddenly heard some noise．It came out from the kitchen(厨房)．He got up and walked to the kitchen．He found that the wood beside the stove(火炉)was burning．There was no water tap(水龙头)in the house, so he could not put out(扑灭)the fire．he shouted loudly to wake up everyone in the house．Then he ran out of his house and knocked on the doors of many houses to wake the people up．They all left their houses quickly． At last the fire was put out by the firemen．Many houses were burnt(烧毁)．But nobody was hurt(受伤)in the fire．

1. Peter lived with his ______．

[　　]

A. sisters　　　B. brothers　　　C. uncles　　　D. parents

2. One night he found that ______ beside the stove was burning．

[　　]

A. the table　　　B. the wood　　　C. the door　　　D. the window

3. ______, so he could not put out the fire．

[　　]

A. Everybody was asleep　　

B. He couldn't shout loudly

C. The kitchen was very big

D. There was no water tap in the house

4. Peter knocked on the doors of many houses ______．

[　　]

A. to wake the people up 

B. to get some water

C. to find his classmates

D. to visit them

5. ______ hurt in the fire．

[　　]

A. People in other houses were

B. Peter's parents were

C. Nobody was 　　　　　　　　 

D. Peter was

阅读短文,回答问题.

    What do you hear? Sounds all round you! You can hear the sound of traffic, the wind in the trees, a dog barking, your own breathing and lots of other things.

    But what is sound? Sound happens when something vibrates(振动) or shakes. We can make something vibrate by hitting it. Try this experiment (实验). Put your ruler on your desk so that part of it sticks out (伸出) over the edge. Put your hand on the part of the ruler that is on the desk. Now pull the part that is sticking out over the edge down, and then let it go. The part you let go will vibrate. It will move up and down very quickly, and give out sound.

    The part of the ruler sticking out over the edge of the desk produced the sound. If you make that part longer, you will hear a lower sound. When you shorten it, you will hear a higher sound. Why does this happen?

    When you shorten the ruler, it will vibrate more quickly. When something vibrates more quickly it produces a higher sound. If you lengthen the ruler, it will vibrate more slowly. When something vibrates more slowly, it produces a lower sound.

1. How does sound happen?

_____________________________________________________________________________

2. How can we make something vibrate?

______________________________________________________________________________

3. Can we hear a higher sound or a lower sound if we make the part of the ruler sticking out over the edge of the desk longer?

_____________________________________________________________________________

4. What does the word “lengthen” mean in Chinese?

_______________________________________________________________________________

5. What’s the best title of the passage?

________________________ ______________________________________________________