Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Bad teeth, a heavier body? And now, weaker bones. Last week, American scientists found another bad thing about cola: It's bad for our bones, especially women's bones. Well, if cola is bad for us, you may want other popular drinks , for example, energy drinks . Energy drinks look cool. Their makers say they give you energy and make you better at sports. So, many students drink them before exams to help them stay awake. But wait. To keep you awake, most energy drinks have a lot of caffeine . They are like a strong cup of coffee or tea. If you drink a lot of them, your heart will beat faster. You will feel nervous . You could also have sleeping problems and find it hard to live without them. Amanda Smith is a 16-year-old US junior high school student. She drinks one or more energy drinks every day. She started to do this a year ago before dance class. But now, Smith says, "I drink them whenever I feel weak or before a test. I cannot help drinking them." The energy you get from the drinks helps for only a short time. You may feel good for an hour or so, but then you'll feel worse than before. Options: A 16 B 15. C 14. D 13. Answer: B 15. Question:
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The answer is:
How old did Amanda Smith begin to take energy drinks?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: London used to be "foggy" for the same reason that cities like Beijing or Chongqing are "foggy" today. The "fog" was in fact smog, a mixture of smoke and fog. In other words, it was made by air pollution. In London, some of this pollution came from factories, but much of it came from the coal that people burnt in their houses to keep warm during the winter. By the 1950s, London's smog problem had become so bad that the government decided to do something to clean the air. A new law was made and nobody could burn coal in any British city. Within a few years, the air became much cleaner. There were no more " _ ". Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago. However, this problem is more difficult for Chinese cities to solve. One reason is that more of the pollution comes from the factories, rather than from coal burnt in people's houses. If these factories were closed, this would harm the economy and lots of people would lose their jobs. Another reason is that changing from coal to cleaner fuel , like gas, is quite expensive. However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution. As a result, there are fewer "pea-soupers" in Beijing than there used to be. Options: A There was too much smoke in the sky. B There were too many factories in the city. C People burnt too much coal in the houses. D The city was too big for the cleaners to clean. Answer: C People burnt too much coal in the houses. Question:
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The answer is:
What was the main reason for air pollution in London?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Computer games are more and more popular with teenagers. Games are fun. After hours of homework it's great to relax by playing a game. But do games ever do kidsany harm? And are there any ways parents can help kids stay away from bad games? US researches are trying to find answers to these questions. One problem found that parents are not taking enough notice of their kids'games -playinghabits. Many games sells output controls on the games to help parents make sure that children don't play things unsuitable for them, said David Walsh, president of the national Institute on media and the Family. Parents need to watch the games kids are playing and how much time they are spending playing them. The study found that playing games too long can affect kids' health as well as their schoolwork. Almost half of all " heavy games" are six to 17 years old. These kids are more likely to have weight and eyesight problems than other kids. Playing too many games also affects(v)how children do in school. Kids can ask their parents to set a time limit for playing games and remind them when the time is up. Don't forget to tell your parents about it. Options: A weight and height B health and schoolwork C personality D Outgoing and energy. Answer: B health and schoolwork Question:
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The answer is:
According to the study, playing too many games can affect a kid's _ .