Conventional wisdom says that hardship can make us old before our time. In fact, a new study suggests that violence not only leaves long-term scars on children's bodies, but also changes their DNA, causing changes that are equal to seven to ten years of premature aging . Scientists measured this by studying the ends of children's chromosomes , called telomeres, says Idan Shalev, lead author of a study published in Molecular Psychiatry. Telomeres are special DNA sequences which prevent the DNA in chromosomes from separating. They get shorter each time a cell divides, until a cell cannot divide any more and dies. Several factors have been found to shorten telomeres, including smoking, radiation and psychological stresses such as being treated badly when young and taking care of a chronically ill person. In this study, researchers examined whether exposure to violence could make children's telomeres shorten faster than normal. They interviewed the mothers of 236 children at ages 5, 7 and 10, asking whether the youngsters had been exposed to domestic violence between the mother and her partner, physical maltreatment by an adult or bullying. Researchers measured the children's telomeres--in cells obtained from the insides of their cheeks--at ages 5 and 10. Telomeres shortened faster in kids exposed to two or more types of violence, says Shalev. Unless that pattern changes, the study suggests, these kids could be expected to develop diseases of aging, such as heart attacks or memory loss, seven to 10 years earlier than their peers. Shalev says there is hope for these kids. His study found that, in rare cases, telomeres can lengthen. Better nutrition, exercise and stress reduction are three things that may be able to lengthen telomeres, he says. The study confirms a smallbutgrowing number of studies suggesting that early childhood hardship imprints itself in our chromosomes, says Charles Nelson, a professor of pediatrics and neuroscience at Harvard Medical School. The new study has found that _ . A) violence leaves scars on a child's mind B) violence can speed up a child's aging C) hardship can change a child's aging D) hardship has a long-term effect on children
B
Britain's oldest man made his first visit to London yesterday at the age of 101. Mr. John Evans had never found the time or money to make the trip from his home in Forest Fach, near Swansea. But, when British Rail offered him an all-expenses-paid birthday trip to the capital he just could not refuse. He arrived at Paddington Station and smartly turned out in his best suit, favorite Panama hat and a red rose in his buttonhole. "It's very exciting. There's no doubt about it," he said. Until yesterday he had never been far from home, except for one trip to Aberdeen. "But I've been on the seas to that faraway land called Ilfracombe 21 miles from home," he joked. Mr Evans, who spent 60 years working as a miner in South Wales, almost made the journey to London once before, at the turn of the century. "There was a trip to the White City but it was ten shillings return from Swansea -- too much I thought. All my money went to the family then," he said. During the next two days Mr. Evans will be taken on a short tour of London to see the sights. Top of his list is a visit to the House of Parliament organized by his MP, Mr. Gareth Wardell. The only arrangement he does not care for is the wheelchair provided for him if he gets tired. "I don't like the chair -- people will think I am getting old. " he said. His secret for a long and healthy life has been well publicized -- no wine, no tobacco and no anger. Before setting off from Swansea with his 76-year-old son, Amwell, he said jokingly, "I'm glad to see they've given me a return ticket. " Mr Evans didn't like the wheelchair simply because _ . A) he was not used to traveling in it B) the wheelchair was of poor quality and not easy to operate C) he actually preferred walking to sitting in it at home D) he thought he was still young enough to manage the trip
D
(Question)
The term "to extend an olive branch" means to make an offer of peace or reconciliation . This term has Biblical origins, coming from the section of the Old Testament that deals with the flood; the sign that the flood is over is an olive branch brought back to the ark by a dove. Olive branches were also symbols of peace in Ancient Greece and Rome, and they continue to be used in various works of art that are meant to suggest peace. Some people have suggested that the olive was a very deliberate and well-considered choice as a metaphor for peace, because olive trees famously take years to mature. War is typically very, hard on the trees because people cannot take the time to nurture them and plant new ones. Therefore, the offer of an olive branch would suggest that someone is tired of war, whether it be an actual war or a falling out between friends. In Ancient Greek and Roman times, people would offer actual olive branches. In Rome, for example, defeated armies traditionally carried olive branches to indicate that they were giving in, and the Greeks used them into weddings and other ceremonies. In the modem era, the branch is usually metaphorical, rather than actual, not least because the plants can be a bit difficult to obtain. Many people agree that peace negotiations at all levels of society are a good idea. Between nations, obviously, it is important to extend an olive branch to ensure mutual safety and to help the world run more smoothly. This act can also be important on a personal level, as resolving conflict and learning to get along with others is viewed as an important life skill in many cultures. At some point m their lives, many people will be advised to extend an olive branch to settle a dispute or resolve an issue. Some people believe that it takes an immense amount of courage to take this action, as it often comes with an admission of wrongdoing and regret. It can be learned from the text that to extend an olive branch _ A) is not important on a personal level B) is only important between nations. C) takes a lot of courage. D) is an important life skill m many cultures.
(Answer)
C