Today there are many fires than in the past. Over 100,000 wildfires burn each year in America. Russia has 20,000 to 35,000 wildfires every year. Australia has on average 60,000 each year. These fires destroy(損害)huge areas of forests and burn hundreds of homes.

Many experts believe there are several reasons for this sudden increase in fires. The first reason is climate(氣候)change. Recent weather has been warmer and drier. This leads to dangerous fire conditions. When lightening strikes(發(fā)生雷電),dry grass easily catches fire. Hot winds add to the problem. The wind spreads a fire quickly. In 2010, Russia had the hottest and driest summer in a century. In just one month, 500 fires destroyed over 2,000 homes. Some people lost their lives.

Traditional fire-fighting practices are another reason for the increase in fires. In America, firefighters used to quickly put out every fire. They didn’t allow the grass and trees to burn. As a result, today many forests have thicker vegetation(植被).Thicker vegetation means more fuel(燃料)for fires. Also, without fires from time to time, forests become overcrowded and unhealthy. Some trees are dead. The dead wood then easily catches fire. So surprisingly, America has many more fires today partly because of its past fire-fighting practices.

Scientists now understand that a fire can be a natural part of a healthy forest. As a result, countries like Australia allow more fires to burn naturally. Sometimes, fire fighters even start fires to get rid of(去除)dead wood. Of course, they carefully control the fires. The fire thins out old trees. This allows sunlight to reach the ground. As a result, fires help new trees to grow. Therefore, if a fire is not a serious threat(威脅)to people, firefighters may let it burn naturally.

1.Why did Russia have so many fires in one month in 2010?

A. Because lightening spread the fire.

B. Because there was much fuel for fires.

C. Because there were not enough firefighters.

D. Because it was unusually hot, dry and windy.

2.What happens because of the traditional fire-fighting practices in the USA?

A. There are fewer wildfires.

B. Trees and grass become thicker.

C. The weather becomes warmer and drier.

D. Sunlight reaches the ground to help forests.

3.What is the main idea of Paragraph 4?

A. Fires are serious threats to human beings.

B. Australian firefighters don’t put out fires.

C. Fires can play an important role I forests.

D. It’s difficult for firefighters to control the fires.

4.Which of the following is true according to the passage?

A. Not all the fires in the forests must be put out.

B. People’s carelessness leads to dangerous fires.

C. Australia allows all the fires to burn naturally.

D. There are more fires in Russia than in the USA.

1.D 2.B 3.C 4.A 【解析】 試題現(xiàn)在的火災(zāi)比過去更多了。每年有許多火災(zāi)發(fā)生,摧毀了許多森林和人們的家園,什么原因引發(fā)了更多的火災(zāi)?如何控制火讓其更好地服務(wù)于人類?本文分析了引發(fā)火災(zāi)的原因及怎樣控制火災(zāi)。 1. 2. 3. 4.
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IV. 補(bǔ)全對話

A: What can l do for you, sir?

B:1.

A: Could you tell me when you would like to fly?

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B: What’s the night number?

A: Flight number? It’s HU703.

B: HU703. 4.

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B: One-way.

A: How many seats, please?

B: 5.

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A: Certainly. You can help me.

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D: You have to wait for about an hour.

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In 1986,people began to use lunch boxes which were made of plastic.5.Now we can see many plastic lunch boxes with beautiful pictures on them.

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Did you know that each day one person in the US throws away 4.4 pounds of rubbish? Almost every month, we throw away our own rubbish in packaging alone. Packaging ( including boxes, bags, etc) comes to our homes with the things we have bought. Several weeks ago, the TV news said that in a city in Italy, tons of rubbish were piled up in the streets, and the smell was rather terrible. What can we do to help? We should get to know the following Rs.

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Recycling is an important part of keeping our planet clean and green. It can also save energy. Be sure that you don't throw things in the rubbish that can be recycled to make something else. Paper, plastic, cans and bottles can all be recycled, but food, electrical waste and mobile phones can't. When you are not sure whether something can be recycled, go to your parents and teachers for advice.

Follow the three Rs, and every one of us can do something to save the Earth. It is also the best way to save ourselves.

1.The first paragraph of the passage implies(暗示) that .

A. packaging should be given up

B. Italy is too dirty for us to visit

C. the US produces most rubbish

D. the Earth is becoming dirtier

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C. mainly to have a cleaner world

D. mainly to save some money

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A. Food and bottles.

B. Books and newspapers.

C. Paper and mobile phones.

D. Plastic and electrical waste.

4.The passage mainly tells us that .

A. all useless things can be recycled

B. the environment is greatly improving

C. the three Rs can help us clean the Earth

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Get outside to exercise

Jim, a player on his school football team, had a weight problem not long time ago. He could never get anyone to play with him. So his father and he started playing football for a few minutes every night. Ten minutes turned into an hour or more. In just a few years, the heavy kid became athletic, fit and healthy.

More TV means more fat

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1.According to the passage, kids put______at the end of the snack list in one study of eating habits.

A. chips B. ice cream C. fruit D. soft drinks

2.What does the underlined word “obese” mean in Chinese?

A. 苗條的 B. 虛胖的 C. 健康的 D.聰明的

3.What can we do to fight overweight according to the passage?

1. Try to get up early.

2. Try to take more exercise.

3. Try not to sit in front of TV or computer for too long.

4. Try to eat more healthy food.

A. 2 3 4 B. 1 2 3 C. 1 3 4 D. 1 2 4

4.The passage mainly talks about _______.

A. one of the biggest health problems, overweight

B. how to play football

C. the healthy food

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