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.
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Question: Article: Perhaps the most extraordinary building put up in the nineteenth century was the Crystal Palace which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all the other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all the time and a lot of people from many countries came to see it. Plenty of goods were sent to the exhibition from all parts of the world. There was also a great deal of machinery on show. Though in those days, traveling was not as easy as it is today, steamboats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace by train. There were six million visitors in all, and the money from the exhibition was used to build museums and colleges. Later the Crystal Palace was moved to the South London. It remained one of the most famous buildings in the world until it was burnt down in 1936.
Question: The Crystal Palace was built up _ .
Options: (A) in the 1950s (B) in the 1900s (C) shortly before 1851 (D) before 1951

Answer: C

Question: 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.

Answer: C

Question: Article: Almost 80% of the Americans have stated their opposition to cloning pet animals such as cats and dogs, yet companies still try to make a business out of selling cloned pets. Pet cloning has been promoted as a way to "bring back" or "copy" a beloved companion animal. However, studies have shown that cloning remains an experimental technology with many failures. Behind each lovely picture of a cloned cat or dog lie hundreds of animals that were kept in lab cages, receiving bad treatment to produce just that one cloned animal. For all that, you end up with a cloned animal who is unlikely to appear like the original physically or behaviorally and may experience serious health problems. Also, while pet cloning companies are charging customers up to $150,000 for a cloned pet, millions of homeless animals of the same species are available in US animal shelters for around $100. Unfortunately, most of these animals are killed for lack of adopting homes. With No Pet Cloning campaign, the American Anti-Vivisection Society (AAVS) tries to protect both animals and people from harm. They campaigned until the US companies that sold cloned animals closed their doors. First it was Genetic Savings & Clone Inc. and then it was BioArts International. When BioArts was closed, its owner, Lou Hawthorne, finally had to _ the problems of pet cloning. According to Hawthorne, he has seen numerous failures during his pet cloning attempts, "One clone----which was supposed to be black and white----was born greenish-yellow where it should have been white (we still have no good explanation for how that happened)." The AAVS is educating the public about the animal suffering and is seeking regulation of cloning activities. They will continue to take the lead in protecting animals from the threats of pet cloning.
Question: From the passage, we know that _ .
Options: (A) pets are often deserted by their owners (B) more and more people have joined the AAVS (C) most American are against cloning pet animals (D) the American Anti-Vivisection Society is supported by the government

Answer:
C