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     Trees in cities "live fast but die young" compared to forests in the countryside, warns a new study.

     Researchers found that trees in cities die younger than ones in the countryside because of the higher levels of CO2. City﹣living trees suffer(遭受) a loss of carbon storage(碳储量). That means trees produce less energy from the air.

     Now researchers say more must be done to deal with the situation. Ian Smith, a PhD student of Boston University in the United States, said, "Cities are in the important position in fighting against rising temperatures and increasing CO2.". "We find that tree planting alone may not be enough to keep and increase city canopy cover(树冠覆盖率). Because of the age and size of the present canopy, efforts to improve and protect tree health are badly needed for increasing city tree cover and canopy cover."

     The research team used a model to watch changes among street trees for several planting and management methods. Researchers also used the model to watch tree growth, death and planting rates(率)both among trees in Boston city and forests in the countryside in Massachusetts.

     It was discovered that rates of carbon cycling and growth rates among city trees were nearly four times faster than those in the countryside. However, loss of carbon storage and death rates are also higher, especially death rates are more than double higher than those in countryside forests.

     The study, published in PLOS ONE, has reminded scientists to encourage communities to do more to plant and protect trees. It is important to increase city canopy cover and carbon storage.

    Researchers say planting and protecting will be needed to make sure cities can develop healthily, but more needs to be done to have a better understanding of city trees ﹣﹣﹣which may be different from countryside forests.

(1)According to the passage, which of the following is TRUE?  

A. The more carbon storage loses, the more energy the trees produce from the air.

B. The higher the levels of CO2 are, the harder it will be for the plants to survive.

C. If we plant enough trees, we are sure to increase city canopy cover.

D. Cities do better in fighting against rising temperatures and increasing CO2

(2)Paragraph 4 mainly tells us  

A. the results of the study

B. the discoveries from the researchers

C. the methods of the study

D. the suggestions from the researchers

(3)What does" those" in Paragraph 5 refer to?  

A. Death rates.

B. Rates of carbon cycling.

C. Growth rates.

D. Loss of carbon storage.

(4)The writer's main purpose of writing the passage is  

A. to teach us how to improve and protect tree health

B. to warn us that trees in cities live fast but die young

C. to let us have a better understanding of city trees

D. to tell us to take action to increase city canopy cover

科目 英语   题型 阅读理解   难度 中等
知识点: 判断推理 综合型 新闻报道类阅读 内容归纳
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During the summer holiday, some students might have been busy with traveling, summer camps and all kinds of courses. But a special group of Chinese middle school students decided to taste the hardship of life outside school.

Twelve students in a big city sold vegetables at a local market together. Within 12days, they made more than 1,500yuan.

Among them, the oldest is 21years old, while the youngest is just 10. They are all cousins in a big family and eight of them are from rural areas.

"Compared to traveling, such social practice connects us and makes us learn how tough our parents are," said Dalin, 18, to the City Morning Post. Dalin, a senior high graduate, and her 12﹣year﹣old brother Xiaolin came up with the idea.

They learned to work hard to sell their veggies. Every morning they had to wake up at 3o'clock. Some of them went to the farmer's market to buy vegetables. Some of them went to the local market to take up a temporary stall(临时摊位). To lower the cost, they learned to bargain (讲价) with the sellers.

At about 6:30am, they began to sell vegetables. They peddled(吆喝) loudly to attract(吸引) customers. After several days, they got some experience, too.

For example, it was better to put vegetables in order and bigger ones on top. When the vegetables are too heavy, they should give customers an extra plastic bag.

When they finally packed up and went home, they had a small meeting. Everyone took notes and shared their feelings.

"We are tired," said Dalin. "but we gained a lot."

(1)In the writer's opinion, the 12students' action was  

A. popular

B. encouraging

C. strange

D. embarrassing

(2)The cousins decided to sell vegetables at a market to  

A. show how able they were

B. have less hardship of life

C. learn how hard their parents work

D. prepare for their future traveling

(3)They bargained with the sellers to  

A. cut down the cost

B. share their feelings

C. get bigger vegetables

D. attract more customers

(4)It's clear that  

A. they took up the temporary stall in turn

B. they gave each customer an extra plastic bag

C. Dalin and Xiaolin got the idea of selling vegetables

D. the elder sold vegetables when the younger took notes

(5)The best title of the story should be  

A. Summer Courses

B. Family Business

C. Students Learn from Bargains

D. Cousins Work with Vegetables

(1)We may read the advertisement above  

A. in a geography book

B. in a history magazine

C. on a travel website

D. in a city newspaper

(2)The advertisement offers information mainly to people from  

A. China

B. America

C. England

D. Canada

(3)If you want to get an event pack, you need to  

A. text CHINA to 82727

B. learn about the Great Wall

C.visit nspcc.org.uk/chinatrek

D. e﹣mail chailenges@nspcc.org.uk

(4)we learn from the material that  

A. you can sign up on Octobr 30th

B. you can call for more information

C. the Great Wall Trek lasts for half a month

D. the joiners can trek on the whole Greal wall

(5)NSPCC has something to do with  

A. nature

B. children

C. the Great Wall

D. standard network

A group of boys , ten and eleven years old, walk into a classroom at Collegiate School. (1)  The boys are curious about their new class. It is called "babies".

(2)   They are volunteers. The babies are not dolls. They are real, live babies. The boys learn how to feed,dress,wash and carry them. They even learn how to change diapers(尿片) and what to do in emergencies(紧急情况).(3)  Some of them ask to take it again.

(4)  The boys take required courses in math, English, social studies, and science. They can also choose electives(选修课) in weight lifting,photography, kite flying and computer science. Recently, the headmaster at Collegiate School decided to try something different.(5)  In the class the boys used real babies to learn about child care.

Where does this school get the babies? Mother in the neighborhood near the school volunteer their babies for a few hours each week. These mothers like sharing their children with others.

A. He offered the boys a new elective.

B. The boys don't have to take the class.

C. Collegiate is a private boys' school in New York.

D. They hear babies crying.

E. Most of the boys have a good time in the class

On the last Wednesday of each August the shops of the small Spanish town of the Bunol don't open. Anyone who doesn't like tomatoes leaves town and the streets become full of tourists. They are here to take part in La Tomatina, the world's largest vegetable fight. For a couple of hours almost 50,000 kgs of tomatoes are launched as missiles(导弹) at whoever moves.

La Tomatina started around fifty years ago, when,for no reason, a group of local people started throwing tomatoes at each other. Other people joined in and had so much fun that they did the same thing the next year. Since then La Tomatina has grown and grown. In 2004 almost 20,000 people took part in the "tomato war". Now days it is the most important part of a week﹣long festival involving(包含) parades, eating, drinking, and lots of fireworks.

On the morning of La Tomatina , eight big trucks full of soft tomatoes pull into the center of the town. Official starters climb into the trucks and start throwing tomatoes at the crowd. That is the signal that the fight is about to start. From then on it is a wild scene, as everybody tries to get into the truck to get to the tomatoes. Nobody on the streets is safe from attack(攻击). And there is nothing the locals like more than throwing tomatoes at camera﹣carrying tourist.

Finally, after two hours, all the tomatoes have been thrown. Everybody is tired, sweaty and covered with tomatoes. A bell rings to signal the end of the fight and everyone is a friend again. Tomato﹣covered clothing is taken off and throw away and the crowds wash themselves in public showers down by the river. La Tomatina is over for another year.

(1)How long does the tomato fight last?  

A. For two hours

B. For a day

C. For a week

D. For a year

(2)What can we know about the tomato fight?  

A. A bell rings to signal the start of it.

B. It costs almost 50,000 kgs of tomatoes each time.

C. It takes place on the first Wednesday of August.

D. The crowds go back home to watch themselves after it.

(3)What's Paragraph 3 mainly about?  

A. When the tomato fight starts?

B. Where the tomato fight happens?

C. What people do during the tomato fight?

D. Why the locals like attacking tourists with cameras?

(4)Where can we almost probably read this passage?  

A. In a news weekly.

B. In a self﹣protect handbook.

C. In a Chinese textbook.

D. In a tourist magazine.

Have you ever heard that we can "grow" fresh air in our home without using any expensive air﹣cleaning machines? It becomes true. The studies in India show that people need only three green plants. What we have to do is put them in specific(特定的)space of the house, and each of them will do their share.

Betel palm

Evergreen

Put it in the living room.

Put it in the bedroom.

Four are needed for a person.

Six to eight are OK.

Money plant

Tulip

take away something bad from the air.

give off something bad to the air.

Put it anywhere in the house.

Never put it anywhere in the house.

As many as you like.

You decide.

Meattle, an engineer, has filled his office building with some plants and made it the healthiest building in New Delhi. So why not put some of these plants in your own house? You will not only get better air but also feel fresh at any moment.

(1)What plant may be harmful to people?  

A. Tulips.

B. Betel palms.

C. Evergreens.

D. Money plants.

(2)Which of the follow it TRUE?  

A. Money plants can't be put in the bedroom.

B. Evergeens can change CO into O2 at daytime

C. Meattle has planted many tulips in his office building.

D. A family of three needs 12 betel palms in the living room.

(3)What's the passage about?  

A. How to grow green plants better

B. how to make the office building healthier

C. How to get fresh air through proper plants.

D. How to turn our home into a more beautiful one.

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