Google, the Internet search and mapping company, has developed a car that can steer without a driver. Sometimes the reality is stranger than science fiction: Google is road-testing cars that steer, stop and start without a human driver. The goal is to "help prevent traffic accidents, free up people's time and reduce carbon emissions." says Sebastian Thrun, who is the project leader for the driverless car, or Carbot. By developing the car and the software that drives it, Google wants to change how people get from place to p1ace. Eric Schmidt, one of the company's top officials, said, "Your car should drive itself. It just makes sense." So far, the driverless autos have gone about 140,000 miles on California roads without people taking over the driving. Many of the roads are very busy or full of curves that challenge human drivers. The autos' software makes it possible to know speed limits, traffic patterns and road maps. The vehicles use radar, lasers and video cameras to find other cars and avoid people crossing streets. There has only been one accident during the testing. And in that case, the Carbot was hit from behind by a human driver when Goog1e's car was stopped at a red light. Engineers say the driverless cars are safer than autos with people behind the wheel because the computers react much more quickly than humans. The Carbot is still in very early testing stages. Experts agree that it will be years before you will be able to buy one. But it is likely that one day you will be sitting in the driver's seat of a driverless car. When the auto was first invented it was called a "horseless carriage". Now it seems that it is time for the "driverless carriage" to be part of our 1ives. The advantage of the Carbot is that _ . A) it can drive all by itself B) it can avoid any traffic accident C) it doesn't pollute the environment D) it is the most fashionable car nowadays
A
As the nights get lounger, those who suffer from the winter blues will be planning ways to escape to the sunshine. But there may be a much simpler way of cheering yourself up... simply shining a bright light into your ear canal. Up to one in four Britons suffer from seasonal affective disorder, with seven per cent of the population having full-blown SAD. It is caused by the brain not receiving enough daylight which is needed to trigger serotonin , a hormone that regulates mood. Symptoms range from mild lethargy to depression and insomnia, but a cure might be in sight. Two clinical trials, run by Valkee - who make a device that can shine light into your ear - and the University of Oulu in Finland, have found that carefully targeted light can help prevent the condition. Juuso Nissila, Valkee's co-founder and chief scientist said: "We presented earlier that the human brain is sensitive to light". "These two clinical trials demonstrate that channeling bright light via ear canal into brain's photosensitive areas effectively prevents and treats seasonal affective disorder." The University of Oulu reported that in their first study, 92 per cent of the patients with seasonal affective disorder achieved full remission after a month of daily eight-to-12 minute doses of light from the Valkee. Time Takala, chief physician at the Oulu Deaconess Institute said: "These two trials show that bright light channeled into the brain via ear canal is an important future method to treat seasonal affective disorder." Valkee launched its bright light headset in August 2010. It is classed as a medical device under EU regulations. The device channels bright light direct to the brain via the ear canal to prevent and cure depression, mood swings and even circadian-rhythm disorders such as jet lag. It costs PS185 and looks like an iPod - only the earphones emit light rather than sound. Which of the following is NOT true according to the passage? A) The bright-light headset will be mainly used to cure jet lag. B) 92% patients with seasonal affective disorder achieved full remission after a month. C) Valkece made the device that can shine light into cars. D) Juuso Nissila reported that the human brain is sensitive to light.
A
A team of researchers in the UK has shown that children who were taken to the library more often and owned more books at two years old achieved higher scores in school tests when they began primary school. The research also showed that although social background has a noticeable effect on a child's readiness for school, attending pre-school and having their parents teach them a wide range of activities have a positive effect---while extended exposure to television lowers their scores. "One message coming through loud and clear is that how a child learns in his very early years is critical for a smooth transition into the educational system," said Professor James Law. "This is a very positive message, as it gets us away from the belief that a child's educational future is pre-determined by standard measures of socio-economic disadvantage, such as income, housing, or the mother's education." Data from the study shows that children from a positive communication environment had a better expressive vocabulary by their second birthday. These children went on to achieve higher scores in language, reading and maths tests when they entered school. In the early years, the communication environment was a better predictor of children's success with language than their general social background. Most children develop speech and language effortlessly, but some are slow to acquire these skills and go on to struggle with literacy and academic skills throughout their schooling. This project set out to uncover what factors contributed to these problems. Professor Sue Roulstone said, "These findings are an encouragement to all parents to provide a positive communication environment for their children from the very start of their lives. The project did identify particular aspects of the communication environment, such as having children's books around and not having the television on too much. But the main message is that, as parents, we can have an impact on how our children learn to talk by providing a range of... What is implied in the passage? _ . A) The research could help children who suffer from learning difficulties. B) Parents should take their children to school as early as possible. C) Teachers should teach children how to communicate with their parents. D) Children who have good language abilities will not have difficulties in class.
A