Read the following article and select the best answer. Article: Zoe was just 2 weeks old when she was seen wandering in a village market wax Kenya's Tsavo National Park in December 1995.Zoe's mother had died and the baby was left alone, She was no ordinary orphan --she was an elephant.So she was sent to a most unusual orphanage in Nairobi, run by a woman named Daphne Sheldrick, Daphne's husband, David Sheldrick, founded Tsavo National Park.Daphne has been working with wild animals for some 60 years, and in 1977 she opened the elephant orphanage at her home in Nairobi.Since 1997, the orphanage, which depends on private contributions, has saved more than 100 baby elephants, Zoe was rather healthy when she was found, and once under the care of the orphanage she was very happy, having enough milk a day and being confident and naughty.After a year in the orphanage with the constant companionship of her human family, Zoe was taken to a refuge at Tsavo National Park.There her keepers have gradually introduced her to the ways of the wild, helping her to find food and water.Zoe lives together with other young elephants in the protected area.It may take some years, but the final aim is to send all of them to the wild. Daphne said that her dream for the future is to see ivory trade forbidden, all stored ivory destroyed and no one wearing an ivory ornament ever again."There will always be competition for land," she explained? "but we can protect elephants in the parks and give the young a chance." Question: At Tsavo National Park, Zoe has been _ . - taught to adjust to life in the wild - accompanied all the time by her keepers - allowed to wander in the village market - sent to a group of adult elephants to be protected
taught to adjust to life in the wild

Read the following article and select the best answer. Article: If you're a male and you're reading this, congratulations: you're a survivor. According to statistics, you are more than twice as likely to die of skin cancer as a woman, and nine times more likely to die of AIDS. Assuming you make it to the end of your natural term, about 78 years for men in Australia, you'll die on average five years before a woman. There are many reasons for this--typically, men take more risks than women and are more likely to drink and smoke--but perhaps more importantly, men don't go to the doctor. "Men aren't seeing doctors as often as they should," says Dr. Gullotta. "This is particularly so for the over-40s, when diseases tend to strike." Gullotta says a healthy man should visit the doctor every year or two. For those over 45, it should be at least once a year. Two months ago Gullotta saw a 50-year-old man who had delayed doing anything about his smoker's cough for a year. "When I finally saw him it had already spread and he has since died from lung cancer," he says. "Earlier detection and treatment may not have cured him, but it would have prolonged his life." According to a recent survey, 95% of women aged between 15 and early 40s see a doctor once a year, compared to 70% of men in the same age group. "A lot of men think they're undefeatable," Gullota says. "They only come in when a friend drops dead on the golf course and they think, 'Geez, if it could happen to him, ...'" Then there's the ostrich approach. "Some men are scared of what might be there and would rather not know," says Dr. Ross Cartmill. "Most men get their cars serviced more regularly than they service their bodies," Cartmill says. He believes most diseases that commonly affect men could be addressed by preventive check-ups. Regular check-ups for men would inevitably place strain on the public purse, Cartmill says. "But prevention is cheaper in the long run than having to treat the diseases. Besides, the ultimate cost is far greater: it is called premature death." Question: Why does the author congratulate his male readers at the beginning of the passage? - They are more likely to survive serious diseases today. - Their average life span has been considerably extended. - They have lived long enough to read this article. - They are sure to enjoy a longer and happier life.
They have lived long enough to read this article.

*Question*
Read the following article and select the best answer. Article: Most people know precious gemstones by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It's more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone's origin. Beneath the surface of a gemstone, on the tiny level of atoms and molecules , lie clues to its origin. At this year's meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers to clarify these clues and identify a stone's homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. "With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from," McManus told Science News. Some gemstones, including many diamonds, come from war-torn countries. Sales of those "blood minerals" may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones. To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles called electrons separate from atoms. The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements produce different patterns, but McManus and her team say that gemstones from the same area... Question: Why did the U.S. government pass law that requires companies selling gemstones to determine the origins of their stones? - To look for more gemstones. - To encourage violent civil wars. - To reduce the trade in blood minerals. - To develop the economy.
**Answer**
To reduce the trade in blood minerals.