People who drink moderately , exercise, quit smoking and eat five servings of fruit and vegetables each day live on average 14 years longer than people who adopt none of these behaviors, researchers said on Tuesday. Much evidence has shown these things contribute to healthier and longer lives, but the new study actually quantified their combined effect, the British team said. "These results may provide further support for the idea that even small differences in lifestyle may make a big difference to health in the population," the researchers wrote in the journal PLoS Medicine. Between 1993 and 1997 the researchers questioned 20,000 healthy British men and women about their lifestyles. They also tested every participant's blood to measure vitamin C intake, which shows how much fruit and vegetables people ate. Then they assigned the participants aged 45-79 a score of between 0 and 4, giving one point for each of the healthy behaviours. After allowing for age and other factors that could affect the possibility of dying, the researchers determined people with a score of 0 were four times as likely to have died. Also a person with a health score of 0 had the same risk of dying as someone with a health score of 4 who was 14 years older. The lifestyle change with the biggest benefit was giving up smoking, which led to an 80 percent improvement in health, followed by eating fruits and vegetables. Moderate drinking and keeping active brought the same benefits. With this information, public-health officials should now be better encouraging behavior changes likely to improve the health of middle-aged and older people. The main idea of the passage is that _ . A) sports can help you live a healthier life B) people inprefix = st1 /Britaindream of a longer life C) health changes can extend life 14 years D) researchers recommend health suggestions
C
WASHINGTON--There are more than 222 million TVs in American homes. And it would make Frank Vespe very happy this week if every one was turned off. Vespe is head of the TV--Turnoff Network, the Washington organization behind TV Turnoff Week. For TV Turnoff week, American kids are encouraged to go one week without watching TV. This year it runs from April 23 to 29. "Our real meassage here is to see what lift is like without TV and then make watching TV a conscious decision,"said Vespe. Vespe said that most of the kids who go without television for a week go back to watching, but not as much."They watch more selectively. They do more things as a family. It helps them put TV in its place. One kid who is turning off her television is Sarah Foote, 9, of Virginia." Sarah admits it won't be too hard to give up TV. She's allowed to watch only educational television, and her favourite show from last year isn't on any more. Of course, there are plenty of good things about TV: programmes can be entertaining, even educational. Even so, some experts aren't sure TV Turnoff Week is the answer. "Too much TV is not good. A little bit of TV for young kids is good because it adds to their vocabulary. The bottom line is moderation ,"says Susan Neuman, a university educator who studies kids and reading. Neuman says the real problem is that parents do not keep track of what their kids are watching. They do not set limits on TV viewing. Also, in some families, TV might be the only thing there is to do. What message does Sarah have for other kids? "It's a very good idea. I survived a whole week without TV. It also teaches you to enjoy time doing different things and not being sucked into something on TV, because you do not want TV taking up all of your time,"Sarah said. The purpose of the TV--Turnoff Network is to_. A) make children watch TV less B) make children play outside more C) make children do more homework D) make parents watch more TV programmes
A
Q: A Guide to the University Food The TWU Cafeteria is open 7am to 8pm.It serves snacks , drinks, ice cream bars and meals.You can pay with cash or your ID cards.You can add meal money to your ID cards at the Front Desk.Even if you do not buy your food in the cafeteria, you can use the tables to eat your lunch, to have meetings and to study. If you are on campus in the evening or late at night, you can buy snacks, fast food, and drinks in the Lower Cafe located in the bottom level of the Gouglas Centre.This area is often used for entertainment such as concerts, games or TV watching. Relaxation The Globe, located in the bottom level of McMillan Hall, is available for relaxing, studying, cooking, and eating.Monthly activities are held here for all international students.Hours are 10 am to 10 pm, closed on Sundays. Health Located on the top floor of Douglas Hall, the Wellness Centre is committed to physical, emotional and social health.A doctor and nurse is available if you have health questions or need immediate medical help or personal advice.The cost of this is included in your medical insurance.Hours are Monday to Friday, 9am to noon and 1;00 to 4;30pm. Academic Support All students have access to the Writing Centre on the upper floor of Douglas Hall.Here, qualified volunteers will work with you on written work, grammar, vocabulary, and other academic skills.You can sign up for an appointment on the sign-up sheet outside the door two 30 -minute appointments per week maximum.This service is free. Transportation The TWU Express is a shuttle service.The shuttle transports students between campus and the shopping center, leaving from the Mattson Centre.Operation hours are between 8am and 3pm.Saturdays only.Round trip fare is $1. How can you seek help from the Writing Center? A) By filling in a sign-up form B) By applying online C) By calling the center D) By going to the center directly
A: A
(Question)
The human brain contains ten thousand million cells and each of these may have a thousand connections. Such enormous numbers used to discourage us and cause us to dismiss the possibility of making a machine with human-like ability, but now that we have grown used to moving forward at such a pace we can be less sure. Quite soon, in only 10 or 20 years perhaps, we will be able to assemble a machine as complex as the human brain, and if we can we will. It may then take us a long time to render it intelligent by loading in the right software or by altering the architecture but that two will happen. I think it is certain that in decades, not centuries, machines of silicon will arise first to rival and then exceed their human ancestors. Once they exceed us they will be capable of their own design. In a real sense they will be able to reproduce themselves. Silicon will have ended carbon's long control. And we will no longer be able to claim ourselves to be the finest intelligence in the known universe. As the intelligence of robots increased to match that of humans and as their cost declines through economies of scale we may use them to expand our frontiers, first on earth through their ability to withstand environments, harmful to ourselves. Thus, deserts may bloom and the ocean beds be mined. Further ahead, by a combination of the great wealth this new age will bring and the technology it will provide, the construction of a vast, man-created world in space, home to thousands of millions of people, will be within our power. In what way can we make a machine intelligent? A) By making it work in such environments as deserts, oceans or space B) By working hard for 10 or 20 years C) By either programming it or changing its structure D) By reproducing it
(Answer)
C