Read the following article and select the best answer. Article: It does not come as a surprise that Dubai has a growing problem with "tragic". The local rulers have explored all the conventional ways to get traffic moving again,including higher prices for parking,fuel and insurance. But at a recent conference in Hamburg, Hussain Lootah said that the city may adopt a more strict approach: setting an income level for vehicle ownership. Mr Lootah's approach is unlikely to be copied widely, but mayors of other big cities around the world are starting to think about taking severe actions of their own, including complete car bans in inner cities.But the efforts may not be enough to reduce traffic and pollution. The problems will only get worse: the number of vehicles sold globally each year will grow from around 80 million today to more than 100 million by the end of the decade, according to IHS Automotive. There are already a handful of car-free communities around the world.But these are typically small and often tourist destinations that seek to create a throwback(;) in time, such as Sark Island, in the English Channel. The largest car-free urban area is probably Venice, where it is impossible to build roads and bridges to link the more than 100 small islands the city sits on. Yet pedestrian malls and other car-free zones keep popping up in cities around the world. Some cities are considering ways to limit central city access to "green" machines, such as battery-electric vehicles. Hamburg is perhaps the furthest along. Such extreme plans may fly in a city such as Hamburg. But in many other cities the political resistance even to less far-reaching measures is hard to overcome. Michael Bloomberg, New York's former mayor, tried twice to introduce a jam charge for much of Manhattan, but his plans were rejected by state lawmakers. Question: It is still hard to reduce traffic problems, because _ . - Mr Lootah's approach will be copied widely. - mayors take gentle measures toward them. - more vehicles will be sold globally each year. - complete car bans in inner cities are not made.
more vehicles will be sold globally each year.

Read the following article and select the best answer. Article: When Cath Pirret and her husband Iain took their daughters Jessie, 10, and Holly, 7, to Britain earlier this year, it was a trip that was all about showing the girls where their parents grew up. But there were also some key sightseeing opportunities, such as Stonehenge, Hadrian's Wall and Tate Modern, before heading to Paris to see the Mona Lisa and Venus de Milo. So, what did the couple from Melbourne hope their girls would get from the trip? "A greater understanding that travel is not a difficult thing to do," Cath says."Some of the highlights are to meet new people and adapt to lots of different situations." Cath believes that children, in order to truly benefit from travel, need to be old enough to understand and appreciate the experience. Sydney-based ABC Radio broadcaster and film critic C.J. Johnson travelled a lot with his parents as a child. His father was "really into rivers" and decided he was going to make it the "family mission" to see the "seven great rivers of the world". There's no doubt, thanks to a richer society and the greater ease and access to all forms of travel, that few -- if any -- generations of parents and children have ever had the ability to journey together as far, as wide and as deep as the present one.Travel brings history to life, builds children's independence and opens their minds. A child's view also helps adults to see the world through new eyes. For Keith Bellows, the award-winning editor-in-chief of the American National Geographic Traveler magazine says the world is simply"the greatest classroom we have". He's convinced, like Spicer, that any parent willing and financially able to give the gift of travel offers a gift that keeps on giving. "Children who learn to travel will travel to learn," he says. "And they will do it all their lives." With that in mind, Bellows, a father of three, wrote a book, 100 Places that Can Change Your Child's Life. Question: When Johnson was a child, _ . - he made a decision to see the greatest rivers - he fully understood his family mission - he was forced to keep his father company - he learned a lot and developed a broad outlook
he learned a lot and developed a broad outlook

Read the following article and select the best answer. Article: Smart home applications can share all kinds of helpful information with homeowners. There appears a new housing platform which can detect the stress on electricity -- and the stress on the heart. "There is a growing population of elderly people, and there are statistics to show that more and more of them are going to live alone in the home," said Johann Siau, a senior lecturer at the University of Hertfordshire in the U.K., who was leading the InterHome project. The system was originally designed to provide remote access to a house so owners could be more energy-efficient. In a small type of the system, set-in controller devices connect securely to the Internet. The owner can then monitor them with a cell phone or computer. User feedback helps the system adapt to routines, saving on electricity. While thinking about responding to user behavior and an increasingly elderly population, the researchers decided to add wristband technology that senses important organs of the body such as body temperature and pulse, Siau said. "If someone were to fall, it would detect the fall and it would immediately start the monitor of the pulse to see if the person has gone into shock ," he said. The wristband communicates with the home system wirelessly. Data from the band can be securely transmitted to the home network and accessed by authorized users. "We're working on trying to reduce it to a level where it could potentially be a wrist-sized product," Siau said. But he warned that the technology presented new challenges. "When you start using that on a larger scale, you have issues of privacy or security," he said. Siau said the InterHome home system isn't intended to invade privacy. "We're thinking about the elderly people who are living alone with no one looking after them," he said. "Hopefully this will be able to decrease some concerns and possibly save a few lives." Question: The wristband technology is used in the system to _ . - sense important organs of a person - keep an old man from falling - get the medical information of a sick person - record a person's daily activities
sense important organs of a person