Ice-climb in London The huge ice skating area at Somerset House has been drawing crowds each winter for years, but last November an ice wall was added for the first time, bringing even more danger and excitement. Standing more than 26 feet high is along line of pure ice, featuring three climbing faces of varying difficulty using crampons ,ice picks. and ropes. Using it costs about PS40 (020 7854600;www. somersethouseicednk. org. uk). It is open from late November to the end of January. Hang-gliding in Rio De Janeiro According to the hang-gliders of Rio, once you ' ve swooped  over the city's streets,gazing at the Sugar Loaf, and the city of Niteroion, the other side of Guanabara Bay, you will understand why birds are peaceful animals. Accept the romantic idea on a 30-minute cycling flight from the 525-meter Pedra Bonita in the Sao Conrado mountain down to the Sao Conrado beach. It costs aroundPS55. Contact Air Adventures (021 98439006;www. rio-hanggliding, com). Sky-walk in Sydney This experience takes having a look at a nice view to the whole other level, as you are suspended more than 850 feet (260m)above street level,controlled to a glass viewing platform of Sydney Tower. It's the city's highest building. After a thorough briefing and being fitted with protective sky suits , sky-walkers make their way along two-purpose-built walkways and platforms, which have transparent floor,while a guide points out landmarks. Night time sky-walks. are also available. It costs PS46. Mountain-boarding in Leeds Riders roll down hills and fly off jumps, doing tricks. A number of special mountain-board parks have been opened around the country (see www. ridethehill. com). But the Leeds body of the Boarding Society practice at least twice a week in the city in locations that include Roundhay Park. Those with their own boards are welcomed to join them. Contact the society at www. scua. info. Alternatively, beginners can get lessons in Halifax at the Another World(014 22 245196; www mountainboarding.co.uk)mountain-board center... The purpose of the above ads is to   _  . A) offer some ways to experience extreme sports B) help readers have different excitement during their holidays C) introduce the most exciting sports around the world D) introduce the latest sports in the world
A
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While Jennifer was at home taking an online exam for her business law class, a monitor a few hundred miles away was watching her every move. Using a web camera equipped in Jennifer's Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked - remotely - to prevent Internet searches , and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down? In the battle against cheating, this is the _ and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid - that students haven't just searched the Internet to get the right answers. Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of "open online courses." Private colleges, public universities and corporations are jumping into the online education field, spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance. Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students' identities using personal information, such as the telephone number they once used. Other programs can produce unique exam by drawing on a large list of questions and can recognize possible cheaters by analyzing whether difficult test question are answered at the same speed as easy ones. As in many university classes, term papers are scanned against some large Internet data banks for cheating. Some programs can find out possible cheaters by   _  . A) checking the question answering speed B) producing a large number of question C) scanning the Internet test question D) giving difficult test question
A
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The personal computer has overtaken the family dog as man's best friend.according to a study. Researchers found that just 6 per cent of us believe that" most people rely more on their dog than they do on their PC",while 67 per cent think the opposite to be true. Even 38 per cent of dog owners admitted to relying more on their PC than on their dog, although 36 per cent disagreed. And 71 per cent of 18 to 24-year-old dog owners said they relied more on their computer. Paul Allen,editor of Computeractive magazine said:"These days you can even you're your PC for fl walk,provided you have a laptop or tablet." "It's only a matter of time until the first PC that fetches your slippers." Researchers questioned 2,000 British adults to find out the change modern technology has brought to their home life. They found that male dog owners are almost twice as likely as female owners to rely on their computer than a _ companion. Mr.Allen said:"With broadband bringing them global news and newspaper sales falling,the family dog even misses out on the pleasure of taking the paper to his owner." But it's not all bad news for obedient dogs. "The family PC has given dog owners access to a wealth of resources and information that can help with the long-term care that a dog needs,"Mr.Allen said. The advantage of dogs as pets over the personal computer now is that A) the dog can go out for a walk with people B) the dog can help people fetch something C) the dog can bring people more pleasure D) the dog is more likely to follow its owner's orders
B
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Life-long learning is the concept that "It's never too soon or too late for learning." -- a philosophy that has taken root in a larger number of different organizations. Life-long learning is an attitude -- learners believe that one can and should be open to new ideas, decisions, skills or behaviors. Life-long learning throws the well-known rule "You can't teach an old dog new tricks" out of the door. Life-long learning provides the general public with learning opportunities at all ages and in different ways: at work, at home and through leisure activities, not just through formal channels such as school and higher education. Life-long education is often achieved through distance learning or e-learning, continuing education, home schooling, etc. It also includes training programs for those who want to improve their qualifications, bring their skills up to date or retrain for a new line of work. In later life, especially in retirement, continued learning takes various forms, crossing traditional academic limits. One of the reasons why life-long education has become so important is the rapid progress of modern science and technology. Although the period of primary, secondary and university education is increased, the knowledge and skills gained there are usually not _ for a professional career spanning  three or four decades. What is the main idea behind life-long education? A) To force people to keep in learning new skills throughout their working life. B) To provide teachers with extra income. C) To allow people to have chances to receive education throughout their life. D) To prevent students from learning at school.

C
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