Article: Even if we have an extremely healthy diet and lifestyle, the human body is programmed to wear out at a maximum of about 120 years, and usually less. We all have a biological clock inside us which determines the moment when our organs cease to function properly. This is because our cells have stopped renewing themselves and our body can no longer repair itself. This is also the moment when we are more likely to begin to suffer from the diseases of old age such as arthritis and Alzheimer's. However, rapid advances in DNA research are beginning to throw light on the secrets of the ageing process. By the end of this century we could literally have the power of life over death. Although it has long been accepted that humans have a fixed lifespan, it is also a fact that certain other organisms, such as reptiles and amphibians, appear to _ . The only reason we do not see 500-year-old alligators is because in the wild their lives are always in danger, from man, from pollution and from other animals. When they are kept in zoos they do not seem to age at all after they are fully grown. The same is true of some species of fish, which grow indefinitely and show no signs of ageing. The existence of animals with no fixed lifespan seems to indicate that an age gene really does exist. It is this gene which scientists are searching for, which may delay or repair damage to the body caused by ageing. Another new area of research involves the oxidation theory, which says that ageing is caused by the same process that makes iron rust. In controlled experiments, the lifespans of certain animals were shown to be lengthened with anti-oxidants; for example, the lifespan of mice can be increased by 30%. Antioxidants are already being used in face creams and other cosmetics, and they are likely to play an important part in keeping people physically young. Perhaps the most immediate advance we are likely to see in the battle to halt the ageing process will be organ replacement. By the year 2020 it is likely that we will be replacing... Question: When all humans reach a certain age, _ . Yes or no, is the answer "the organs stop to perform appropriately"?
No

Article: Where on Earth are you? Navigators use lines of latitude and lines of longitude to locate places. Lines of latitude run east and west around Earth. On a map or globe, these lines appear as running sideways or horizontally. Lines of longitude run north and south around Earth. These lines go up and down or vertically on a map or globe. These lines create an imaginary graph paper on the Earth. They make it possible to find an absolute, or exact, location on Earth. They even allow us to give an absolute location to a place out in the middle of the ocean. Lines of latitude tell us how far north or south of the Equator we are. Sailors have used primitive navigation tools, like astrolabes, since ancient times. The astrolabe uses the sun and stars to find an approximate location. Using such tools, they have been able to approximate their distance from the equator. Although their instruments may not have been the high quality we have now, they were incredibly accurate for their time. Lines of longitude tell us how far east or west of the prime meridian we are. Sailors constantly looked for new ways to increase their navigation skills. Still, it wasn't until the 18th century that they were able to measure degrees of longitude. They would have been very envious of the technology available to us today. When we use lines of latitude and longitude together, we can get a very precise location. If we want to identify the absolute location of a point, we look where the latitude and longitude lines cross nearest to that point. We use the coordinates for that point as its address. Many maps today include degrees of latitude and longitude. Question: Why do maps include degrees of latitude and longitude? Yes or no, is the answer "To locate a precise place."?
No

Q: Article: Since Amy Chua took the world of Chinese parents by storm with her book, Battle Hymn of the Tiger Mother, in 2011 it seems more Chinese mothers have turned into "tiger moms". Several young Chinese mothers are my friends. But rarely any of them is free for lunch or other activities, because they appear to have become their children's "slaves". One of these young mothers moved from Hebei province to Beijing just to get her daughter admitted to a private and very expensive kindergarten. She closed her booming business and her husband shifted his office to Beijing, where they have bought a house. Another young mother is divorced and always busy with her daughter's dance, piano or English class. And a couple, both professionals in high positions, left their jobs, sold their Beijing house and moved to Australia when their son started going to school. The offspring of tiger moms rarely play sports, exchange ideas with their peers , take part in social projects, clean their rooms or wash clothes. Since everything such children do is under the guidance of their protective mothers, they don't learn how to manage their time or plan a project. As such, their education is far from complete. They are unable to defend an idea--let alone come up with one--deal with opposing views, accept defeat or organize their life. Tiger moms want their children to be more competitive so that they can enter the best schools. But school is only one period in a person's life. What about real life? What kind of independence will these children have once they grow up? Today, children don't get the chance to discuss or choose what they want: learn to play the violin or piano; take up drawing or swimming. Their tiger moms decide for them. Ideally, parents should discuss with their children, give them a choice and explain to them that they will have to finish what they start. This would help children develop not only their judgment but also their sense of responsibility. The solution to this problem is total reform of the education sector. And... Question: The author wrote the passage for _ . Yes or no, is the answer "Chinese mothers"?
A: No

Article: People in China, as in other parts of the world, are waiting to see how U.S. President-elect Barack Obama will deal with global problems such as the current economic slowdown once he takes office. As Sam Beattie reports from Beijing, there is widespread hope for closer U.S.-Chinese cooperation. For many students in Beijing, Mr. Obama symbolizes all that is possible in the United States. He's a popular winner here, seen as a self-made man who has made it to the top. "I think he is very charming, and a president who can create a new era," said Zhang Wei, a university student. "I like him very much and most of my friends do too." Ni Weibo, another university student, agrees. "Sino-U.S. relations still need more cooperation," she said. "I think he will help take it to a new era." China's President Hu Jintao congratulated Mr. Obama within hours of his victory, saying he hoped bilateral ties could be made stronger. Political analysts here say China will be looking for the incoming president to avoid contentious issues such as Taiwan's independence, human rights and Tibet. Instead, they say Beijing would like Mr. Obama to focus on solving the global economic crisis, and to help China's slowing economy by opening up U.S. markets. But trade relations might be _ , says Renmin University's Professor of International Studies, Shi Yinhong. He warns, "There is a possibility that President Obama will take some protectionist measures which China will not accept, then trade disputes could develop to a degree that we have not seen ever before." Despite making the headlines, Mr. Obama faces some tough challenges in managing the U.S. relationship with China. China is now a stronger and more confident country than the China his predecessors dealt with. And in this time of economic uncertainty, analysts say it's a country with which Mr. Obama will want to maintain a good relationship. Question: What does " a sticking point"( in para.7 ) mean? Yes or no, is the answer "a disputed point"?
Yes