In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

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 _ .
Options: (A) Mr Lootah's approach will be copied widely. (B) mayors take gentle measures toward them. (C) more vehicles will be sold globally each year. (D) complete car bans in inner cities are not made.
C

Article: Reading is good for you. There is increasing evidence to show that reading isn't merely a way of improving literacy and knowledge, but that it might actually be good for one's mental and physical health, too. In the age of Twitter and short attention spans, reading novels, which requires intense concentration over a long period of time, could be the antidote . Neuroscientists Baroness Susan Greenfield says that reading helps to lengthen attention spans in children and improve their ability to think clearly. "Stories have a structure that encourages our brain to think in sequence, to link cause, effect and significance," she says "It is essential to learn this skill as a small child." "In a computer game, you might rescue a princess, but you don't care about her, you just want to win," she explains, "But a princess in a book has a past, present and future. You can relate to her. You see the world through her eyes" According to professor John Stein, Oxford university, reading is far from a passive activity. "Reading exercises the whole brain," he explains. " When we get lost in a good book, we are doing more than following a story, Imaging what is happening is as good as activating the brain as doing it. In other words, our brains simulate real experiences, and it is just as if we were experiencing them ourselves. This doesn't happen when we are watching a TV or playing computer games." Getting stuck in a good novel appears to be good for one's mental health. Reading helps one not only fights loneliness, but also forget one's own problems for a while. Researchers found that just six minutes of reading could reduce stress levels by more than two-thirds, more than listening to music or going out for a walk. The concentration required to read distracts the mind, easing muscle's tension and slowing the heart rate. Reading may be good for physical health, too, by preventing brain aging and disease.
Question: Which of the following statement is true about playing computer games?
Options: (A) It encourages our brains to think clearly (B) It makes people feel lonely (C) It makes the player concentrate on the result instead of the role in it (D) It can help lengthen one's attention span.
C

Article: "Migrant workers" is a familiar term for 17-year-old Shi Jian. Her father and uncle often talk about the problems surrounding this group of people. However, Shi cares more about the children of these migrant workers. Last year Shi's housekeeper's daughter had to give up her schooling in Beijing because she would not be allowed to sit the national college entrance exam. She was forced to continue her high school education in her hometown in Sichuan Province. Shi thinks the current law is unfair for migrant workers' children, as it prevents them from studying at public schools, unless their parents pay huge sums. So, Shi decided to do a survey of migrant workers so that she could find some solutions to help solve the problem. In the last six months Shi spoke to 186 migrant workers in Beijing. Her interviewees include babysitters, guards, keepers, supermarket clerks, house cleaners and construction site workers. Shi found out that 55 of them were parents. Among this group, only eight have children who attend schools in Beijing. The other 47 had to leave children with relatives in the countryside. However, 40 of the 47 would like to enroll their children in city schools. From her interviews, Shi found that the workers' lowest income was 400 yuan each month. Over one-third earn a monthly wage of or below 1000 yuan. "Even schools for migrant workers' children charge more than public schools. Morever, parents constantly worry about these schools closing or relocating," she explained. Shi has recently completed a report about her survey, in which she makes a series of recommendations. "The government can set up public schools for migrants' children equal to schools for city children. Second, to offset migrant workers' very low pay, public schools should offer them special rates so they can afford their children's tuition .
Question: What drove Shi to do the survey of migrant workers?
Options: (A) Her curiosity about migrant workers' lives (B) She was asked to do a survey of migrant workers as part of a school project. (C) Her housekeeper's daughter was forced to move to her hometown to continue studying. (D) She wanted to draw people's attention and become famous
C