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.

[EX Q]: Article: If your dog or cat is eating grass, it means it's going to rain. False maybe. There' s no evidence that when a dog or cat is eating grass in the front yard, it' s going to rain. But then, there's no evidence that it isn't going to rain, either. Doctors think dogs and cats eat grass to help make their stomach better or maybe just because they like the taste of it. You'll get sick if you go outside in cold weather with wet hair. False. You might feel cold, but you can't catch a cold because you were outside with wet hair. Many churches have prevented people from throwing rice at weddings because the rice grows larger in a bird's stomach when eaten, causing the bird to explode . True and false. It's true many churches have prevented people from throwing rice, but this is more likely because the rice can become slick on a road or street. There's nothing about rice that will hurt birds. Rice is an important part of many bird's food. Chocolate is Poisonous to dogs. True. Chocolate has theobromine, which can make your dog sick. So, if you don't want to put your dog's life at risk, don't feed it with chocolate. The number of people visiting the hospital goes way up during a full moon. False. According to researchers, there is no evidence that more people visit the hospital during a full moon, though more people do seem to get caught by the police during that time. The idea that the moon influences behavior has been studied for thousands of years--even the word "lunacy", which means crazy behavior, is based on the word "luna" or "moon".
Question: In doctor's opinion, a grass-eating dog or cat _ .
Options: (A) shows animals also have stomach problems. (B) is a sign of rain (C) behaves like that for personal reasons (D) shows animals enjoy tasty food
[EX A]: C

[EX Q]: Article: Exercise is one of the few factors with a positive role in long-term control of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to "light" beer and low-calorie bread than increase physical efforts. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to lose weight said they were combining exercise with their diet. In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts; for example, one would have to quickly walk hard three miles just to work off the 275 calories in one delicious Danish pastry . Even exercise professionals accept half a point here. "Exercise by itself is a very tough way to lose weight," says York Onnen, program director of the President's Council on Physical Fitness and Sports. Still, exercise's supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight. If you have been sedentary and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year's time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight.
Question: What is said about the average American in the passage?
Options: (A) They tend to hate "light" beer and low-calorie bread. (B) They usually ignore the effect of exercise on losing weight. (C) Most of them were combining exercise with their diet. (D) They know the actors that play a positive role in keeping down body weight.
[EX A]: B

[EX Q]: Article: In 1901, H.G. Wells, an English writer, wrote a book describing a trip to the moon. When the explorers landed on the moon, they discovered that the moon was full of underground cities. They expressed their surprise to the "moon people" they met. In turn, the "moon people" expressed their surprise. "Why," they asked, "are you traveling to outer space when you don't even use your inner space?" H.G. Wells could only imagine travel to the moon. In 1969, human beings really did land on the moon. People today know that there are no underground cities on the moon. However, the question that the "moon people" asked is still an interesting one. A growing number of scientists are seriously thinking about it. Underground systems are already in place. Many cities have underground car parks. In some cities, such as Tokyo, Seoul and Montreal, there are large underground shopping areas. The "Chunnel", a tunnel connecting England and France, is now complete. But what about underground cities? Japan's Taisei Corporation is designing a network of underground systems, called "Alice Cities." The designers imagine using surface space for public parks and using underground space for flats, offices, shopping, and so on. A solar dome would cover the whole city. Supporters of underground development say that building down rather than building up is a good way to use the earth's space. The surface, they say, can be used for farms, parks, gardens, and wilderness. H.G. Wells' "moon people" would agree. Would you?
Question: The explorers in H. G. Wells' story were surprised to find that the "moon people" _ .
Options: (A) lived in so many underground cities (B) knew so much about the earth (C) understood their language (D) were ahead of them in space technology
[EX A]:
A