Q: Read the article and select the best answer. Article: A meteorite flew fast across the sky and exploded over central Russia on Friday, raining fireballs over a vast area and causing a shock wave that smashed windows, damaged buildings and injured l,200 people. People heading to work in Chelyabinsk heard what sounded like an explosion, saw a bright light and then felt the shock wave. According to Russian space agency Roscosmos, the fireball, travelling at a speed of 30km per second, had burnt very brightly across the horizon, leaving a long white trail that could be seen as far as 200km away. Car alarms went off, thousands of windows shattered and mobile phone networks were disrupted. "I was driving to work, it was quite dark, but it suddenly became as bright as if it were day," said Viktor Prokofiev, 36, a resident of Yekaterinburg in the Urals Mountains. "I felt like I was blinded by headlights." The meteorite, which weighed about 20 tons and may have been made of iron, entered Earth's atmosphere and broke apart 30-50km above ground, according to Russia's Academy of Sciences. The energy released when it entered the Earth's atmosphere was about several thousand tons, the academy said, the power of a small atomic weapon exploding. No deaths were reported, but the Emergencies Ministry said 20,000 rescue and clean-up workers were sent to the region after President Vladimir Putin told Emergencies Minister Vladimir Puchkov to ease the disruption and help the victims. The Interior Ministry said about l,200 people had been injured, at least 200 of them children, and most from broken pieces of glass."While events this big are rare, an impact that could cause damage and death could happen every century or so. Unfortunately there is absolutely nothing we can do to stop impacts." Question: It can be inferred that the loss caused by meteorites _ . Options: A: is nearly unavoidable B: happens every few years C: can be avoided D: is hard to estimate
A: A

Q: Read the article and select the best answer. Article: Sitting too much is now listed with smoking and junk food as a bad habit that increases your risk of heart disease. New Australian research shows that half-an-hour in the gym will not make up for the waist-expanding damage caused by spending the rest of the day sitting. But the good news is that doing chores in the house or gently walking around the office while on the phone might be enough to keep you fit. The study joins the growing body of evidence suggesting too much sitting might undo the benefits of exercise. The study measured the intensity of physical activities in 168 subjects over seven days. It found that, regardless of how much exercise they did or their total sitting time, those who took more breaks from sitting had lower risk of thick waists and lower levels of blood lipids . "Higher levels of blood lipids have been linked to a heightened risk of heart disease," principal researcher Genevieve Healy of the University of Queensland said. "What the study shows is that there are benefits in just getting up regularly and interrupting your sitting time." Researchers behind the Stand Up Australia project have written to the Rudd Government requesting $3.5 million for a two-year study into the impact how long sitting offects health and productivity of workers. The study would also develop and test strategies for reducing sitting time on the job. The latest study builds on work that is shifting the health promotion focus from purposeful exercise, such as running, to lower intensity activities throughout the day. The Australian research has been backed up by US studies. "To hold a body that weighs 77 kilograms upright takes a fair amount of energy from muscles," said Professor Marc Hamilton from the University of Missouri. "There is a large amount of energy associated with standing every day that cannot easily be replaced by 30 to 60 minutes in the gym." Question: The best title for the text could be _ . Options: A: Exercise in the Gym Is out B: Your Office Chair Is Killing you C: A Cause of Health Disease D: Good News for Workers
A: B

Q: Read the article and select the best answer. Article: Many students attend Miami University for its zoology program, hoping to become a doctor someday, but Joseph Frame has come for a different reason -- to become a vet. "Ever since I was a little boy, I've been interested in animals," Frame said, "but when I grow up, I realized that I didn't want to just take care of dogs and cats. I wanted to work with animals you wouldn't find in your house." Before coming to Miami, Frame worked with his vet Dr. Reid. He learned about the details of being a vet from him. Working with small animals, Frame observed many procedures there. Frame also worked with another vet at Oxford University during his first year at Miami, which involved a leadership position. "I'm in charge of a high school kid," Fram said, "He sometimes needs to be motivated. I like his support system." To realize his goal, Frame began working at the Wilds in Cumberland, Ohio after he met Reid. The Wilds is a non-profit conservation center and is the home for rare and endangered animals. The Wilds combines the concepts of conservation science and education programs to mainly children. After his first year at Miami, Frame began to educate children about the animals. "I think teaching children is an enjoyable experience, especially when they're really interested in animals," Frame said. Frame also explained if a vet school didn't work out, he would be interested in working in animal education. "I would at least have a Zoology degree," Frame said, "The wilds is connected to many zoos all over the country, so I'm sure I can find a job in education." For now, Frame plans to continue working at the wilds this coming summer with a new job at hand, which involves teaching the public about the endangered animals they are protecting and doing shows with owls. While Frame is still an undergraduate student at Miami, he continues his passion for animals. Becoming an exotic vet may be a few years down the road, but Frame continues to work had for this dream, hoping it will become a great reality. Question: Why did Joseph Frame work with Dr. Reid? Options: A: To gain a leadership position. B: To earn more money for his further study. C: To gain some experience of being a vet. D: To help Dr Reid out of financial trouble.
A: C