Justin was excited because his class would visit the fire station. His uncle Frank was one of the firemen (消防队员) and would show the class around during the visit.

The next day, Justin’s class left for the fire station and waited for Uncle Frank to come and start their visit. They began by looking at the big fire trucks (消防车).“Being a fireman is a hard job,” said Uncle Frank. “You need to be in good health and get enough rest.” The kids got to try on some fire hats and climbed on the trucks. After looking at all the trucks, the class went inside, and Uncle Frank showed them where they stay when they are not fighting a fire. Uncle Frank told them that when there is a fire, the alarm rings (警报响起). Just as he finished showing them the alarm, it rang! All the men ran to get ready to leave for the fire. “I am sorry,” said Uncle Frank to the class. “We need to leave now, but Mr Martin will stay with you.” The firemen ran quickly to the fire trucks and left the station. Mr Martin showed the class around inside the station.

That night Justin told his parents about the great trip to the fire station. “We learned some ways to prevent (预防) fires and what to do if our house ever had a fire,” said Justin. “It sounds like you learned a lot of good information,” said Dad. “We sure did,” said Justin. “I think I’m going to be a fireman when I grow up.”

1.What did the class do first after they arrived at the fire station?

A. They tried on some fire hats.

B. They looked at the fire trucks.

C. They learned about the fire alarm.

D. They saw how the firemen fought a fire.

2.What happened after the class saw the fire alarm?

A. It rained hard

B. The class ate a snack.

C. The class had to go outside.

D. The alarm rang for a real fire.

3.Who finally showed the class around inside the station?

A. Mr Martin. B. Uncle Frank.

C. Justin’s dad. D. Justin’s teacher.

4.Justin felt _____ about his trip to the fire station.

A. sad B. nervous

C. happy D. worried

5.Which of the following is TRUE according to the passage?

A. The class learned what to do if the house had a fire.

B. Justin told his teacher he learned a lot from the visit.

C. Justin learned some ways to fight fires from the visit.

D. Uncle Frank allowed the class to drive the fire trucks.

Answer the questions (根据短文内容回答下列问题):

In the time it takes you to read this sentence, the population of the Earth will have grown by 10 people. That may not sound much, but it is about 14,000 people an hour. That is the same as adding most of the population of Germany to the world every year!

Most of these new people are born in developing countries. These countries are found in much of Africa, South America, and parts of Asia. In the developed coun?tries of Europe and North America, the population is growing very slowly. This is because women in these countries have, on average, only one or two children. In the developing countries, many women have five or more children. In 1950, around one quarter of the world’s population lived in the developed countries. By 2050, these countries will be the home to only around one tenth of the world’s people.

In the developing countries,more than one billion people already live below the poverty line(贫困线).These people don’t have enough food to eat and they live in poor housing; children get little or no time at school and suffer from many kinds of diseases.

The United Nations(UN) tries to guess population growth. At the beginning of the 21st century, the world's population was around six billion people. The UN has said that the world's population will level off at 12. 5 billion people by the year 2100. Other people think the world's population will continue to grow, reaching 14 billion people before it becomes stable or even falls.

1.How many people are added to the world’s population an hour?

2.In what areas of the world can developing countries be found?

3.In 1950,what percentage of the worlds population lived in developing coun?tries?

4.By 2050,there will be many more people living in the developed countries, won’t there?

5.How many people will there be in 2100 according to the UN?

6.What may happen if the population keeps growing?

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