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: The Internet has become a part of our everyday life and there is nothing we can do without it.It is a means of communication as well as a good way of relieving and having fun.No matter in what place of the world,the Internet is the same for every one of us. If we hope to improve our knowledge or look for a certain piece of information, the Internet is the perfect tool for our need.If we do not have the time to shop, ordering online is the solution to our problem.The Internet is very useful to most people. There is no doubt that the Internet also has some bad points.I'm speaking about the harmful information,which may come up in the most unexpected paces.You can sometimes come across violence,presented to the public as a very normal way of expressing beliefs.An intelligent person will always be able to tell apart right and wrong, but what can we do to help the teenagers and children? This sort of information is a cause of many of the violent incidents in schools. There are few organization that monitor the Internet and the information on it.They cannot possibly get rid of all the bad things on the Internet. So should the Internet be censored for the protection of children? My belief is that parents are the ones who should be to blame for what their children ale doing on the Internet.
Question: The disadvantage of the Internet mentioned in the passage is that _ .
Options: (A) people spend too much time on it. (B) people rely too much on it. (C) it can provide harmful information. (D) many people use it to do things that ale not legal
C

Article: Years ago a John Hopkin's professor gave a group of graduate students this task: Go to the slums . Take 200 boys, between the ages of 12 and 16, and research into their background and environment. Then predict their chances for the future. The students, after consulting social statistics, talking to the boys, and compiling much data, concluded that 90 percent of the boys would spend some time in prison. Twentyfive years later another group of graduate students was given the job of testing the prediction. They went back to the same area. Some of the boys--by then men--were still there, a few had died, some had moved away, but they got in touch with 180 of the original 200. They found that only four of the group had ever been sent to prison. Why was it that these men, who had lived in a breeding place of crime, had such a surprisingly good record? The researchers were continually told: "Well, there was a teacher..." They pressed further, and found that in 75 percent of the cases it was the same woman. The researchers went to this teacher, now living in a home for retired teachers. How had she exerted this remarkable influence over that group of children? Could she give them any reason why these boys should have remembered her? "No," she said, "no I really couldn't." And then, thinking back over the years, she said amusingly, more to herself than to her questioners: "I loved those boys."
Question: What were a group of graduate students instructed to do?
Options: (A) To research into the living conditions of the poor citizens. (B) To foretell what the future might have in store for poor kids. (C) To study 200 boys in the slums between 12 to 16 and predict their future. (D) To survey the background and environment of 200 teenagers.
C

Article: A machine that takes sweat-laden clothes and turns the moisture into drinking water is in use in Sweden. The device spins and heats the material to remove the sweat, and then passes the vapor through a special membrane designed to only let water molecules get through. Since its Monday launch, its creators say more than 1,000 people have "drunk others' sweat(h)" in Gothenburg. They add the liquid is cleaner than local tap water. The device was built for the United Nation's child-focused charity UNICEF to promote a campaign highlighting the fact that 780 million people in the world lack access to clean water. The machine was designed and built by engineer Andreas Hammar, known locally for his appearances on TV tech show Mekatronik. He said the critical part of the sweat machine was a new water purification component developed by a company named HVR in collaboration with Sweden's Royal Institute of Technology. "It uses a technique called membrane distillation ," he told the BBC."We use a substance that's a bit like Gortex that only lets steam through but keeps bacteria, salts, clothing fibers and other substances out."They have something similar on the International Space Station to treat astronaut's urine - but our machine was cheaper to build. Volunteers have been sampling the treated sweat since the start of the week in Gothenburg ."The amount of water it produces depends on how sweaty the person is - but one person's T-shirt typically produces 10ml , roughly a mouthful." The equipment has been put on show at the Gothia Cup - the world's largest international youth football tournament. MattiasRonge, chief executive of Stockholm-based advertising agency Deportivo - which organized the stunt - said the machine had helped raise awareness for UNICEF, but in reality had its limitations. "People haven't produced as much sweat as we hoped - right now the weather in Gothenburg is lousy," he said."So we've installed exercise bikes alongside the machine and volunteers are cycling like crazy."Even so, the demand for sweat is greater than the supply. And the machine will never be mass produced - there are better solutions out there such as water purifying pills."
Question: What can we infer from the passage ? _ .
Options: (A) The water processed by the machine is cleaner than local tap water . (B) The machine can help raise awareness of lacking water in the world . (C) The machine is cheaper than the similar one on the International Space Station (D) The amount of water the machine produces is roughly a mouthful.
B