Article: Scientists have long believed one way to stop the Earth's atmosphere from warming is by planting more trees. The idea is that more trees take in or absorb some of the carbon dioxide in the atmosphere. Carbon dioxide is a gas released by cars, factories and other human activities. The gas traps heat in the Earth's atmosphere, which warms the planet. However, two new studies have found that trees may not be as helpful in reducing carbon dioxide as had been thought. The first study was done at Duke University in prefix = st1 /Durham,North Carolina. Researchers pumped extra carbon dioxide into a test area where pine trees were growing. The trees grew thirty-four percent faster during the first three years. However, in time, the trees slowed to about their normal growth rate. The scientists say this is because trees need other nutrients, such as nitrogen. In the second study, researchers from Duke and Bowdoin College in Brunswick,Maineexamined the soil around trees. They discovered that as the leaves broke down into the soil, all the carbon was not trapped in the soil. Much of it was released into the atmosphere as carbon dioxide. Forest planting has been a part of negotiations on a world agreement to reduce greenhouse gases that scientists believe cause global warming. The United States,Canada,Japanand some other industrial countries have supported the idea. But this new research suggests the idea is not as effective as environmental activists had thought. Scientist Ram Oren of Duke University led the study on tree growth. He says that earlier estimates on the ability of forests to absorb carbon dioxide were overly hopeful. Some scientists not involved in the studies say the research provides some of the first evidence on how trees react to carbon dioxide. Other scientists say the research disputes(......) a belief among some coal and power companies. The companies say that rising levels of carbon dioxide in the atmosphere will not create harmful global warming. Instead, they say _ will increase forests and... Question: Why did the researchers do the TWO studies? Yes or no, is the answer "To prove that trees may not be as helpful in reducing carbon dioxide as had been thought."?
Yes

(Question)
Article: I got married in 2008. My husband and I are very emotional and have loads of dreams in life. Now I want to share a hidden part of my life. After one month of my marriage, I started working because I could not sit home. To accomplish our dreams, we are both working hard day and night in spite of belonging to a good family. Life is very strange. When any turn happens, one cannot know. I started working because I was very ambitious. I used to wonder about people who worked to earn their bread but I never knew in my wildest dreams that I would be part of the crowd who work to earn a livelihood. I was blessed with a daughter in November, 2009. She was just three months and 15 days old when I rejoined my job. My husband supported me and my family supported me but I never wanted to work again because I belonged to a family where a mother should give her full attention to her child. Keeping all the values aside that I learnt from my parents, I went back to work and will work till my last breath. I missed my daughter every second. She has started recognizing and throwing expressions for likes and dislikes. I cannot share my feelings with anyone, as I do not want anyone to know that I am broken completely from inside. My husband and my daughter are my greatest strength but I ignore them just to earn money and fulfill my dreams that I have. If one day, my daughter complains to someone about her mom, please tell her that she is my reason for survival and happiness and she is the only one who brings smile to my face. Question: After her daughter's birth, the author thought _ in the beginning. Yes or no, is the answer "she should stop working and care for her child"?
(Answer)
Yes

Ques: Article: Entire populations of American toads breed within the same few days at the same time each year, usually late April or early May. The toads hop to their breeding ponds after the ground has warmed and the first hard spring rain falls. To get there, many of the toads will cross roads that cut through their habitat. It will be a grand view of hopping toads as well as a disastrous killing by cars! The toads are "slow in moving at that time of year--it's still cool, they've been inactive--and they get killed" by cars when crossing roads, said Serrao, a naturalist. An April night five years ago, when Serrao went out to a country road to watch the moving of the toads, he counted 100 toads; 95 were hit by cars. A similar story can be told for several other species of toads, frogs, crocodiles and turtles around the world. The world's amphibians are reducing, and road-killing is just one factor behind it. Other better-known causes of the decline include global warming, insecticides , and the loss of wetlands. Serrao says unless these animals get help crossing the road, their local populations will disappear. Jackson, a biologist, said one way to help amphibians survive road crossings is to construct "amphibian tunnels" beneath the road. Jackson says tunnels should be a 0.6-meter-by-0.6-meter box, open at the top, and fitted with an iron grate to allow enough air and light into the tunnel. In addition, fences or walls should extend out from either side of a tunnel for about 30 meters, which guide amphibians toward the tunnels. European countries have built amphibian tunnels for decades. Jackson led a team that installed the first such tunnel in prefix = st1 /Americain 1987, which helped over 3/4 of the local amphibian population safely cross the road. Jackson says that there are about a hundred amphibian tunnels in the UStoday, but many of them were not carefully designed and probably not working well because land developers wanted to save money. Question: The passage is mainly about the protection of _ . Yes or no, is the answer "amphibians from road-killing"?
Ans: No

Question: Article: Imagine one day, the water taps in your house stop running. You have to buy water from shops. And still there isn't enough for everyone. Your mother has to save the family's shower water to do other things. Would you be able to stand that kind of life? Probably not. But _ 's what kids in Yemen are experiencing. Experts said Yemen is going to be the first country in the world to run out of water. According to a report, the capital, Sanaa, will run out of drinking water as early as 2025. Because of the shortage, the government often cuts the water supply. Hannan, an 18-year-old from Lahej, told the Times: "In a good week we'll have a water supply all week. But then the following week there will be water only for a day or two." Hannan said only rich people have enough water to use. They can buy water from the shops or from the water truck. Private companies own the trucks. They travel around the city every day to sell water - at very high prices. "A lot of people can't afford it," she said. The average person in Yemen uses 100 to 200 cubic meters of water per year. That is far below the international water poverty line of 1,000 cubic meters. The government is thinking of making use of seawater. But it will cost a lot and it may not happen soon enough to help the people of Yemen. Question: The purpose of the text is to _ . Yes or no, is the answer "draw our attention to water shortage"?
Answer:
No