To extinguish (熄灭) different kinds of fires, several types of fire extinguishers have been invented. They must be ready for immediate use when fire breaks out. Most portable (手提式的) kinds operate for less than a minute, so they are useful only on small fires. The law requires ships, trains, buses and planes to carry extinguishers.

    Since fuel, oxygen (氧气) and heat must be present in order for fire to exist, one or more of these things must be removed or reduced to extinguish a fire. If the heat is reduced by cooling the material below a certain temperature, the fire goes out. The cooling method is the most common way to put out a fire. Water is the best cooling material because it is low in cost and easy to get.

    Another method of extinguishing fire is by cutting off the oxygen. This is usually done by covering the fire with sand, steam or some other things. A blanket may be used do cover a small fire.

    A third method is called separation, which includes removing the fuel, or material easy to burn, from a fire, so that it can find no fuel.

    The method that is used to put out a fire depends upon the type of fire. Fires have been grouped in three classes. Fires in wood, paper, cloth and the like are called Class A fires. These materials usually help keep the fire on. Such fires can be stopped most readily by cooling with water.

68. If a fire breaks out on a bus, which of the follow should be ready there for you to use?

A. Sand           B. Water         C. A blanket.           D. An extinguisher.

69. To cover a small piece of burning wood with a basin in order to stop the fire is an example of         .

A. separating the fire                                 B. reducing the heat

C. removing the fuel                                 D. cutting off the oxygen

70. In choosing how to put out a fire, we should first be clear about          .

A. when it breaks out                                B. how it comes about

C. what kind it is                                       D. where it takes place

71. What would the author probably discuss in the paragraph that follows?

A. Another class of fires                                   B. Another type of extinguishers

C. How fires break out.                                 D. How fires can be prevented.

My elder brother Steve, in the absence of my father who died when I was six, gave me important lessons in values that helped me grow into an adult.
For instance, Steve taught me to face the results of my behavior. Once when I returned in tears from a Saturday baseball game, it was Steve who took the time to ask me what happened. When I explained that my baseball had soared through Mrs. Holt’s basement window, breaking the glass with a crash, Steve encouraged me to confess（承认）to her. After all, I should have been playing in the park down Fifth Street and not in the path between buildings. Although my knees knocked as I explained to Mrs. Holt, I offered to pay for the window from my pocket money if she would return my ball. I also learned from Steve that personal property is a sacred（神圣的） thing. After I found a shiny silver pen in my fifth-grade classroom, I wanted to keep it, but Steve explained that it might be important to someone else in spite of the fact that it had little value. He reminded me of how much I’d hate to lose to someone else the small dog that my father carved from a piece of cheap wood. I returned the pen to my teacher, Mrs. Davids, and still remembered the smell of her perfume as she patted me on my shoulder.
Yet of all the instructions Steve gave me, his respect for life is the most vivid in my mind. When I was twelve, I killed an old brown sparrow in the yard with a BB gun. Excited with my accuracy, I screamed to Steve to come from the house to take a look. I shall never forget the way he stood for a long moment and stared at the bird on the ground. Then in a dead, quiet voice, he asked, “Did it hurt you first, Mark?” I didn’t know what to answer. He continued with his eyes firm, “The only time you should even think of hurting a living thing is if it hurts you first. And then you think a long, long time.” I really felt terrible then, but that moment stands out as the most important lesson my brother taught me.
【小题1】 What is the main subject of the passage?

A．he felt surprised	B．he was light-hearted
C．he felt frightened	D．he knelt before her

My elder brother Steve, in the absence of my father who died when I was six, gave me important lessons in values that helped me grow into an adult.

For instance, Steve taught me to face the results of my behavior. Once when I returned in tears from a Saturday baseball game, it was Steve who took the time to ask me what happened. When I explained that my baseball had soared through Mrs. Holt’s basement window, breaking the glass with a crash, Steve encouraged me to confess（承认）to her. After all, I should have been playing in the park down Fifth Street and not in the path between buildings. Although my knees knocked as I explained to Mrs. Holt, I offered to pay for the window from my pocket money if she would return my ball. I also learned from Steve that personal property is a sacred（神圣的） thing. After I found a shiny silver pen in my fifth-grade classroom, I wanted to keep it, but Steve explained that it might be important to someone else in spite of the fact that it had little value. He reminded me of how much I’d hate to lose to someone else the small dog that my father carved from a piece of cheap wood. I returned the pen to my teacher, Mrs. Davids, and still remembered the smell of her perfume as she patted me on my shoulder.

Yet of all the instructions Steve gave me, his respect for life is the most vivid in my mind. When I was twelve, I killed an old brown sparrow in the yard with a BB gun. Excited with my accuracy, I screamed to Steve to come from the house to take a look. I shall never forget the way he stood for a long moment and stared at the bird on the ground. Then in a dead, quiet voice, he asked, “Did it hurt you first, Mark?” I didn’t know what to answer. He continued with his eyes firm, “The only time you should even think of hurting a living thing is if it hurts you first. And then you think a long, long time.” I really felt terrible then, but that moment stands out as the most important lesson my brother taught me.

1. What is the main subject of the passage?

A．The relationship between Mark and Steve.

B．The important lesson Mark learned in school

C．Steve’s important role in mark’s growing process.

D．Mark and Steve’s respect for living things.

2. It can be inferred from the passage that when Mark confessed to Mrs. Holt, __________.

A．he felt surprised                        B．he was light-hearted

C．he felt frightened                       D．he knelt before her

3.In the story about the pen, which of the following lessons did Steve teach his brother?

A．Respect for personal property.

B．Respect for life.

C．Sympathy for people with problems.

D．The value of honesty.

4. According to the writer, which was the most important lesson Steve taught his young brother?

A．Respect for living things.

B．Responsibility for one’s actions.

C．The value of the honesty.

D．Care for the property of others.

5.Which of the follow is true according to the passage?

A．Mark was still a boy when he wrote this passage.

B．Mark lost the small dog his father carved somewhere.

C．When a living thing hurts you, you should kill it.

D．Even if a living thing hurts you, you should not kill it without hesitation.

My elder brother Steve, in the absence of my father who died when I was six, gave me important lessons in values that helped me grow into an adult.

For instance, Steve taught me to face the results of my behavior. Once when I returned in tears from a Saturday baseball game, it was Steve who took the time to ask me what happened. When I explained that my baseball had soared through Mrs. Holt’s basement window, breaking the glass with a crash, Steve encouraged me to confess（承认）to her. After all, I should have been playing in the park down Fifth Street and not in the path between buildings. Although my knees knocked as I explained to Mrs. Holt, I offered to pay for the window from my pocket money if she would return my ball. I also learned from Steve that personal property is a sacred（神圣的） thing. After I found a shiny silver pen in my fifth-grade classroom, I wanted to keep it, but Steve explained that it might be important to someone else in spite of the fact that it had little value. He reminded me of how much I’d hate to lose to someone else the small dog that my father carved from a piece of cheap wood. I returned the pen to my teacher, Mrs. Davids, and still remembered the smell of her perfume as she patted me on my shoulder.

Yet of all the instructions Steve gave me, his respect for life is the most vivid in my mind. When I was twelve, I killed an old brown sparrow in the yard with a BB gun. Excited with my accuracy, I screamed to Steve to come from the house to take a look. I shall never forget the way he stood for a long moment and stared at the bird on the ground. Then in a dead, quiet voice, he asked, “Did it hurt you first, Mark?” I didn’t know what to answer. He continued with his eyes firm, “The only time you should even think of hurting a living thing is if it hurts you first. And then you think a long, long time.” I really felt terrible then, but that moment stands out as the most important lesson my brother taught me.

1. What is the main subject of the passage?

A. The relationship between Mark and Steve.

B. The important lesson Mark learned in school

C. Steve’s important role in mark’s growing process.

D. Mark and Steve’s respect for living things.

2.It can be inferred from the passage that when Mark confessed to Mrs. Holt, __________.

A. he felt surprised           B. he was light-hearted

C. he felt frightened          D. he knelt before her

3.In the story about the pen, which of the following lessons did Steve teach his brother?

A. Respect for personal property.          B. Respect for life.

C. Sympathy for people with problems.     D. The value of honesty.

4.According to the writer, which was the most important lesson Steve taught his young brother?

A. Respect for living things.         B. Responsibility for one’s actions.

C. The value of the honesty.         D. Care for the property of others.

5.Which of the follow is true according to the passage?

A. Mark was still a boy when he wrote this passage.

B. Mark lost the small dog his father carved somewhere.

C. When a living thing hurts you, you should kill it.

D. Even if a living thing hurts you, you should not kill it without hesitation.

To extinguish (熄灭) different kinds of fires, several types of fire extinguishers have been invented. They must be ready for immediate use when fire breaks out. Most portable (手提式的) kinds operate for less than a minute, so they are useful only on small fires. The law requires ships, trains, buses and planes to carry extinguishers.

Since fuel, oxygen (氧气) and heat must be present in order for fire to exist, one or more of these things must be removed or reduced to extinguish a fire. If the heat is reduced by cooling the material below a certain temperature, the fire goes out. The cooling method is the most common way to put out a fire. Water is the best cooling material because it is low in cost and easy to get.

Another method of extinguishing fire is by cutting off the oxygen. This is usually done by covering the fire with sand, steam or some other things. A blanket may be used do cover a small fire.

A third method is called separation, which includes removing the fuel, or material easy to burn, from a fire, so that it can find no fuel.

The method that is used to put out a fire depends upon the type of fire. Fires have been grouped in three classes. Fires in wood, paper, cloth and the like are called Class A fires. These materials usually help keep the fire on. Such fires can be stopped most readily by cooling with water.

1.If a fire breaks out on a bus, which of the follow should be ready there for you to use?

A. Sand                             B. Water

C. A blanket.                           D. An extinguisher.

2.To cover a small piece of burning wood with a basin in order to stop the fire is an example of         .

A. separating the fire                  B. reducing the heat

C. removing the fuel                    D. cutting off the oxygen

3.In choosing how to put out a fire, we should first be clear about          .

A. when it breaks out                   B. how it comes about

C. what kind it is                      D. where it takes place

4.What would the author probably discuss in the paragraph that follows?

A. Another class of fires                   B. Another type of extinguishers

C. How fires break out.                 D. How fires can be prevented.