Read the following article and answer the question. Article: Traffic Management Traffic lights are key tools for regulating traffic How.They are not, however, perfect.Drivers exchange the traffic jams that would happen at unmanaged crossings for a pattern of stop-go movement that can still be annoying, and which bums more fuel than a smooth passage would. Creating such a smooth passage means adjusting a vehicle's speed so that it always arrives at the lights when they are green.That is theoretically possible, but practically hard.Roadside signs wired to traffic lights can help get the message across a couple hundred metres from a crossing, but such signs are expensive, and are not widespread.Margaret Martonosi and Emmanouil Koukoumidis at Princeton University, and Li-Shiuan Peh at the Massachusetts Institute of Technology, however, have an idea that could make the process cheaper and more effective.Instead of a hardwired network of signs, they propose to use mobile-phone applications. For a driver to benefit, lie must load the team's software , named SignalGuru, into his phone and then put it on a special thing attached to the inside of his car's windscreen, with the camera lens pointing forward.SignalGuru is designed to detect traffic lights and track their status as red, yellow or green.It broadcasts this information to other phones in the area that are fitted with the same software, and --if there are enough of them ?the phones thus each know the status of most of the lights around town.Using this information, SignalGuru is able to calculate the traffic-light schedule for the area and suggest the speed at which a driver should travel in order to avoid red lights. Tests in Cambridge, Massachusetts, where five drivers were asked to follow the same route for three hours, and in Singapore, where eight drivers were asked to follow one of two routes for 30 minutes, revealed that SignalGuru was capable of predicting traffic-light activity with an accuracy of 98.2% and 96.3% respectively, in the two cities.This was particularly impressive because in Cambridge the lights... Question: SignalGuru is an application used on _ . Answer:
OPTIONS:
- a camera
- a computer
- a mobile phone
- a GPS system in one's car
a mobile phone
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Read the following article and answer the question. Article: We all remember seeing hitchhikers , standing by the side of the road, thumb sticking out, waiting for a lift. But it is getting rare nowadays. What killed hitchhiking? Safety is often mentioned as a reason. Movies about murderous hitchhikers and real-life crime have put many drivers off picking up hitchhikers. That no single women picked me up on my journey to Manchester no doubt reflects the safety fear: a large, strangely dressed man is seen as dangerous. But the reason may be more complex: hitchhiking happens where people don't have cars and transport services are poor. Plenty of people still hitchhike in Poland and Romania. Perhaps the rising level of car ownership in the UK means the few people lift hitchhiking are usually considered strange. Why can't they afford cars? Why can't they take the coach or the train? Three-quarters of the UK population have access to a car; many of the remainder will be quite old. The potential hitchhiking population is therefore small. Yet my trip proves it's still possible to hitchhike. The people who picked me up were very interesting-lawyer, retired surgeon, tank commander, carpenter, man who live in an isolated farmhouse and a couple living up in the mountains. My conclusion is that only really interesting people are mad enough to pick up fat blokes in red, spotted scarves. Most just wanted to do someone a good turn; a few said they were so surprised to see a hitchhiker that they couldn't help stopping. The future of hitchhiking most likely lies with car-sharing organized over the Internet, via sites such as hitchhikers. org. But for now, you can still stick your thumb out(actually, I didn't do much of that, preferring just to hold up my destination sign) and people-wonderful, caring, sharing, unafraid people-will stop. In the UK, with its cheap coaches and reasonable rail service, I don't think I'll make a habit of it. But having enjoyed it so much, I'm ready now to do a big trip across Europe and beyond. In the 1970s a female friend of my wife's hitchhiked to India.... Question: The author tried to hitchhike but was rejected by single women drivers because _ . Answer:
OPTIONS:
- they were not heading towards Manchester
- they thought most hitchhikers were dangerous
- hitchhiking had been forbidden and they didn't want to break the law
- he was a strong man in strange clothes who seemed dangerousZxxk
he was a strong man in strange clothes who seemed dangerousZxxk
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Read the following article and answer the question. Article: Stopping teens from smoking is a big challenge many communities face today. Many communities can only watch without being able to act while local businesses continue to sell tobacco products to children, even under the risk of punishment by law. Recent studies show that a large percentage of teens today are getting their cigarettes from stores, mostly gas stations or convenience stores. As teens continue to be able to buy their own cigarettes, more and more communities begin to punish those who sell cigarettes to the teens. One community has experienced success in their attempts to stop the sale of tobacco products to children. Woodridge, Illinois, started a program seven years ago which forbade and strictly punished the sale of tobacco products to children. The entire program includes local licensing of vendors , repeated undercover inspections to see if the sale to children has stopped, and education programs in schools. Woodridge has become a model community as other communities are moving to stop teen tobacco use. A recent national study showed that 36.5% of females, and 40.8% of males buy their cigarettes from stores, whether it is a gas station or a supermarket. Hopefully, as more and more sellers see the trouble they face if caught selling to children, they will stop selling. True, tightening down on stores that sell tobacco to children isn't going to completely stop the problem of teen tobacco use. Teens continue to get them from other sources. But it definitely does prevent their efforts. With more education in schools, and perhaps stronger punishments for teens caught with tobacco, more and more teens will see the problems with the tobacco usage, and will stop the habit. Question: Which of the following is NOT a way Woodridge uses to stop tobacco sale to children? Answer:
OPTIONS:
- Local licensing to tobacco sale.
- Repeated undercover inspections.
- Education programs in schools.
- Stronger punishment of teens caught smoking.
Stronger punishment of teens caught smoking.
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