input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Jumping on your bike, even in the city, is becoming increasingly popular--- in London, for example, cycle use has more than doubled in the past ten years. So, which is the best bike for you? If you're traveling to work, a folding bike such as one of the models here is suitable unless you're cycling more than a couple of miles, in which case it might be uncomfortable . You can take a fold-up on the train and as it goes indoors with you, it's secure . For longer journeys, a road bike with drop handlebars and narrow tyres is a good choice. Try Specialized, from PS400. Note that the riding position encourages you to look downwards, which can be dangerous. Mountain bikes are best suited to off-road travel; their fat and strong tyres are good for climbing steep, muddy slopes . Good brands include Trek and Giant, with prices starting at less than PS300. A hybrid bike (halfway between a mountain bike and a road bike) is a good compromise with more upright riding position and thin, fast tyres. Ridgeback makes great hybrids, from around PS350. For a classic sit-up-and-beg bike, it's still hard to beat Pashley, which makes its bikes by hand. Expect to pay around PS500. Once you've picked your bike, sizing is crucial or you may suffer back or neck pain. A famous bike shop will help you choose the right size frame. The height of the seat should be adjusted carefully---again, a good shop will advise. If you only plan to cycle once or twice a month, you can choose a lower-priced bike, but for regular use, paying more means better quality: cheaper bikes need more frequent adjustment of brakes and gears ---and tend to be heavier, too. Finally, items such as mudguards aren't always included. Options: A give advice on how to choose a bike B advertise some famous bike brands C encourage people to go to work by bike D introduce the advantages of different bikes Answer: A give advice on how to choose a bike Question:???
output answer: The main purpose of this passage is to _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: You're in a department store and you see a couple of attractive young women looking at a sweater. You listen to their dialogue: "I can't believe it -- Lorenzo Bertolla! They are almost impossible to find. Isn't it beautiful? And it's a lot cheaper than the one Sara bought in Rome." They leave and you go over to see this unbelievable sweater. It's nice and the price is right. You've never heard of Lorenzo Bertolla, but those girls looked really stylish . They must know. So, you buy it. You never realize that those young women are employees of an advertising agency. They are actually paid to go from store to store, talking loudly about Lorenzo Bertolla clothes. Every day we notice what people are wearing, driving and eating. If the person looks cool, the product seems cool, too. This is the secret of undercover marketing. Companies from Ford to Nike are starting to use it. Undercover marketing is important because it reaches people that don't pay attention to traditional advertising. This is particularly true of the MTV generation -- consumers between the age of 18 and 34. It's a golden group. They have a lot of money to spend, but they don't believe in ads. So advertising agencies hire young actors to "perform" in bars and other places where young adults go. Some people might call this practice misleading, but marketing executive Jonathan Ressler calls it creative. "Look at traditional advertising. Its effectiveness is decreasing." It is true, because everyone knows an ad is trying to persuade you to buy something. However, you don't know when a dialogue you overhear is just a performance. Options: A the brand name of clothes B an advertising agency C a clothing company in Rome D a very popular male singer Answer: A the brand name of clothes Question:???
output answer: Lorenzo Bertolla is _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: The best family vacations are the ones where everyone is entertained and everyone gets along Not sure how to do that,especially if traveling with kids is involved? A travel agent is your answer. A travel agent can recommend the best destinations,resorts and cruises for family-friendly vacations.For vacations with kids,simply share the interests of your children as well as what the adults going on the vacation enjoy doing, and your travel egent can put together the ideal trip for your family,with activities and kids' clubs for the children and entertainment for the adults. Travel agents can even arrange trustworthy childeare,so you can have a kids-free evening on your vacation. Travel agents can also help plan memorable pleasure trips during your vacation.They can advise on the best water parks and get you front-of-the line tickets, or they can give tips on what time to visit certain natural wonders for the best views and fewer crowds. They can also recommend which restaurants are the most family-friendly and take care of the reservations for you. Vacations for kids can be stressful enough (packing,keeping everyone entertained on the plane ride,finding kid--friendly foods, etc)without having the added worry of "what if something goes wrong?''A travel agent will take over if any accident occurs on your trip and will spend time calling companies and researching options until your problem is solved-whether that means you need to re-book a flight or find a trustworthy doctor for your child who has suddenly come down with an illness. Finally, a travel agent will make it easier to bond with your family by recommending the perfect vacation for your family's interests and needs. By taking the planning stress and trip organization off you and giving it to a travel agent, you'll be able to simply enjoy spending time with your family. Options: A It's easy to meet everyone's needs when traveling. B Kids don't like to travel with their parents. C Travel agents prefer to arrange a vacation with kids. D Traveling with kids is a little bit stressful for a family. Answer: D Traveling with kids is a little bit stressful for a family. Question:???
output answer:
What can we learn from the text?