[Q]: Write a multi-choice question for the following article, with the given choices and answer: Article: Scientists have been puzzled by the phenomenon that migrating birds fly not just in groups all the time, but in "V" formations and they have tried to figure out what benefit birds get from this particular formation. Now, a research group from University of London may have found the answer -- migrating birds fly in a "V" to save energy, according to a study published in the journal Nature. When a bird flaps its wings, it stirs the air around it and causes it to move indifferent directions. Scientist found in the study that the air creates an upward-moving wave at the tips of the wings, which means that if a bird flies around the wingtips of another bird, it can get a boost from the rising air and therefore use less energy to stay in the air. Apart form the "free ride" strategy, scientists were also surprised to observe that migrating birds timed their wing beats and adjusted their positions in a very precise way to maximize the lifting effect while avoiding areas where the air move downward. "They're able to sense what's going on from the bird in front, where this 'good air' is coming from and now how to position themselves perfectly in it," lead researcher Steven Portugal told BBC. In fact, the "V" formation has long thought to help birds fly more efficiently . A previous study showed that birds' heart rates went down when they were flying together in a "V" formation. Jet fighters were also found to be able reduce their energy use by up to 18% by staying near the wingtips of other jet fighters. Both of these findings led scientists to suspect that the "V" formation had an efficiency purpose, but until now they still lack proof. "For scientists, the new study provides an insight into an interesting natural phenomenon. But it could mean even more for aircraft companies -- helping them understand how they can _ that with their plane formations to save fuel, said Portugal." Options: A To explain how birds benefit from migration. B To introduce how migrating birds find their way. C To tell some applications of migrating birds' "V" formations. D To report new findings about migrating birds' "V" formations. Answer: D To report new findings about migrating birds' "V" formations. Question:
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[A]: What is the author's purpose in writing this article?

[Q]: Write a multi-choice question for the following article, with the given choices and answer: Article: Children love to play and laugh throughout their days at school or at home. Finding the time to laugh with your children may be the best thing you can do for the relationship. Encourage your children to develop a good humor by laughing at the jokes they make up on the spot. This will help them grow confident and build their self-esteem. If you do not get the joke, you can ask why they think the joke is funny. Honest feedback will help your children develop funnier jokes. You can take them to your local library and have them pick up a few joke books. Then you can head back home or out to the park and read it together for a good laugh. You can take turns reading jokes to each other from the book or make up a few yourselves. But if they make a joke at the expense of another person, you may want to discuss the difference between making fun of yourself and making fun of others. In turn try not to make jokes at your children's expense, you need to set an example that they can follow. Learning to laugh at oneself is a great quality to attain. You can set an example by laughing at your own mistakes. This is a great way to help reduce your own stress as well as your children's. Laughing may make the situation seem lighter and easier to work through. By doing this your children will be better prepared to handle any difficulties. Most importantly laughing will bring you closer together as a family. You can have your family find different ways to laugh. You can play games. You can start a staring contest, arm wrestling contest, thumb wars contest and have a prize for the winners. You can all watch your best funny movies and act out the best parts together after enjoying them. You could hold a contest to see who can make the other members of the family laugh more by doing something funny. Kids will be able to enjoy the good time they had with their parents. The family that laughs together stays together! Options: A having a party B having some kinds of contests C doing some housework D reading joke books Answer: B having some kinds of contests Question:
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[A]: The author advises in Para.4 that people make their family members laugh by _ .

[Q]: Write a multi-choice question for the following article, with the given choices and answer: Article: Chances I really love my job because I enjoy working with small children and like the challenges and awards from the job. I also think my work is important. There was a time when I thought I would never have that sort of career . I wasn't an excellent student because I didn't do much schoolwork. In my final term I started thinking what I might do and found I didn't have much to offer. I just accepted that I wasn't the type to have a career. I then found myself a job, looking after two little girls. It wasn't too bad at first. But the problems began when I agreed to live in, so that I would be there if my boss had to go out for business in the evening. We agreed that if I had to work extra hours one week, she'd give me time off the next. But unfortunately, it didn't often work out. I was getting extremely tired and fed up, because I had too many late nights and early morning with the children. One Sunday, I was in the park with the children, and met Megan who used to go to school with me. I told her about my situation. She suggested that I should do a course and get a qualification if I wanted to work with children. I didn't think I would be accepted because I didn't take many exams in school. She persuaded me to phone the local college and they were really helpful. My experience counted for a lot and I got on a parttime course. I had to leave my job with the family, and got work helping out at a kindergarten. Now I've got a fulltime job there. I shall always be thankful to Megan. I wish I had known earlier that you could have a career, even if you aren't top of the class at school. Options: A was paid for extra work B got much help from her boss C took a day off every other week D often worked long hours Answer: D often worked long hours Question:
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[A]:
When staying with the two girls' family, the author _ .