TASK DEFINITION: In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
PROBLEM: Article: A window is more than just an opening that you can see through. It can affect the way a building looks,how much energy a building USES and even how you feel. Scientists are now working on ncw technologies to create"smart windows". Unlike normal windows,high-tech smart windows can change from clear to dark and back again with the touch of a button --or even automatically as the outside light changes. Smart windows have the power to make the world a cleaner and more comfortable place. Instead of turning on air conditioners ,people could simply _ the windows in a building's empty rooms. With the rooms less bright,they would stay cool,and people would save energy and money at the same time. That's why smart windows are so exciting. Says Claes Granqvist. He's a professor of physics at Uppsala University in Sweden. If you think that you don't care much about windows,you should think again,Granqvist says. Most people who live in developed countries spend about 90% of their time inside buildings and cars. You might spend even more time than that indoors during the winter if you live in a cold climate. Imagine then what it would be like if there were no windows. You'd have no idea what's going on outside. So,the light of the nature is important for improving the way people feel when they stay indoors. The development of smart windows could mean that a lot of air-conditioning systems may no longer be needed. "In the future," Granqvist says "our buildings may look different."
Answer: They can change automatically or by pressing a button.

SOLUTION: About the smart windows.which of the following is NOT true?

PROBLEM: Article: Young people frequently say that they want to exercise, but they just can't find the time. The solution just might be in-office interval training. Recent studies show that very short but intense exercise rapidly builds and maintains fitness and health, even when the workout is only a few minutes long. Work the stairs You can complete an excellent, effective -- and very brief -- workout in an office stairwell, says Martin Gibala, a professor of kinesiology at McMaster University in Canada and an expert on interval training. For a study that he and his colleagues presented earlier this year, they asked 12 out-of-shape women in their 20s to warm up for two minutes by slowly walking up and down stairs in a campus office building. They completed three of these abbreviated stair workouts per week for six weeks. By the end, their aerobic fitness had improved substantially, the researchers reported, by about as much as if they had been running or cycling each week for hours. Fidget your way to fitness. Parents and teachers may once have urged you to sit still, but wiggling, tapping your toes, standing briefly, and otherwise fidgeting as much as possible at your desk is in fact good for your body. In one recent study, college students showed healthier blood flow in their lower legs if they fidgeted than if they did not. Even better, a 2008 study found that among office workers, those who frequently fidgeted burned as many as 300 calories more each day than those who resolutely stayed still.
Answer: several ways to work out within short time

SOLUTION: What does the passage mainly want to tell us?

PROBLEM: Article: A group of British schools are banning skirts after helplessly watching the fashion of "hemline _ creep" when girls roll up skirts to show more of their legs.Rising hemlines among girls in their midtolate teens have long been a headache for schools.Now,it seems,girls who are leaving homes with perfectly proper skirt lengths manage to transform their uniform into microminiskirts by the time they get to school. Some are so short that the headmaster of Tewksbury School in Gloucestershire said they are "almost like belts".Obviously,they have become a bit of a distraction for both boys and male teachers. Robert Kelly,headmaster of Berwickshire High School in Scotland,said short skirts could cause "inappropriate thoughts" among boys.And Hilary Winter,headmaster of Piggott School in Wargrave,Surrey,described short skirts as a "difficult distraction for members of staff ". In the town of Ipswich alone three schools have removed skirts from their approved uniform list.David Hutton,headmaster of Northgate High School,said,"Unfortunately,despite getting in touch with specific parents,sending some girls home to change,requiring others to wear a schoolowned skirt for the day and repeatedly asking others to unroll their skirts,we still had some girls coming to school in inappropriate skirts." "I have therefore introduced a trousersonly policy,which will enable my staff to focus their time and effort on providing students with the best education possible." Girls at Nailsea School near Bristol are used to a uniform ban.Two years ago,they were forbidden from wearing trousers made by the clothing brand Miss Sexy,which were reportedly too low on the hips and too tight."Staff were becoming embarrassed by seeing too much of the girls instead of the uniform,"headmaster David New said."They were very low, hipsterstyle,very tight trousers." Now they have been banned from wearing skirts. "We didn't want to waste any more time on it.It just means that teachers can concentrate on what's important in education,"New said. Megan Throp,a 15yearold student at Guiseley School in Leeds,facing a trousersonly policy,told the Yorkshire Evening Post newspaper,"Our rights and freedom of being young women have been taken away because we have been forced into wearing school trousers." However,students are likely to find another means of adjusting dress code ,as David New told the LA Times,"I suspect that,teenagers being teenagers,there will be a new uniform violation that becomes the habit,"he said."That was true when I was at school,and I'm sure it was true when my father was at school."
Answer: Permitting only a small number of girls to wear skirts at school.

SOLUTION:
What measure has Northgate High School taken to keep girls from wearing short skirts?