TASK DEFINITION: In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
PROBLEM: Article: If you don't prepare yourself now, retirement may be some of the most boring and dull years of your life. To have a happy, fulfilling retirement, you need to start preparing right away. The most obvious thing for people to do when they retire is to take up a hobby. The most important step to take before retiring, though, is to make sure that you actually have started some hobbies. Once you're retired, unless you 've already started a hobby, you'll find it very hard to get into something new. Some hobbies aren't for everyone. Think about what you enjoy doing and start participating on a casual basis now. Another thing many people participate in is volunteering. Not only does volunteering give you something to do, it also gives you a sense of accomplishment and can add meaning to your life .Volunteering is also rewarding in other ways, too. There are hundreds of different types of volunteer services and you'll always be able to meet new and interesting people. Also, don't think that volunteering is always only about helping someone for free. Many companies pay their volunteers after they've had enough experience and prove themselves to be valuable workers. There are plenty of other potions, as well. Going back to school is a great way to keep yourself feeling young. Taking a vacation around the world with your loved ones is another great way to spend your retirement. Ultimately, though, the key to a happy retirement is simply keeping yourself busy and doing whatever you love. If there's nothing you love doing now, then you'll find that once you have a vast amount of free time, your life will be pretty empty. Now is the time to find out what you want to do when you retire.
Answer: Because we are likely to have difficulty starting a hobby after retirement.

SOLUTION: Why does the author suggest starting a hobby before retirement?

PROBLEM: Article: I don't want to talk about being a woman scientist again. There was a time in my life when people asked constantly for stories about what it's like to work in a field dominated (controlled) by men. I was never very good at telling those stories because truthfully I never found them interesting. What I do find interesting is the origin of the universe, the shape of space, time and the nature of black holes. At 19, when I began studying astrophysics , it did not bother me in the least to be the only woman in the classroom. But while earning my Ph.D. at MIT and then as a post-doctor doing space research, the issue started to bother me. My every achievement--jobs, research papers, awards--was viewed through the lens of gender politics. So were my failures. Sometimes, when I was pushed into an argument on left brain versus right brain, or nature versus nurture , I would instantly fight fiercely on my behalf and all womankind. Then one day a few years ago, out of my mouth came a sentence that would eventually become my reply to any and all provocations : I don't talk about that anymore. It took me 10 years to get back the confidence I had at 19 and to realize that I didn't want to deal with gender issues. Why should curing sexism be yet another terrible burden on every female scientist? After all, I don't study sociology or political theory. Today I research and teach at Barnard, a women's college in New York City. Recently, someone asked me how many of the 45 students in my class were women. You cannot imagine my satisfaction at being able to answer, 45. I know some of my students worry how they will manage their scientific research and a desire for children. And I don't dismiss those concerns. Still, I don't tell them "war" stories. Instead, I have given them this: the visual of their physics professor heavily pregnant doing physics experiments. And in turn they have given me the image of 45 women driven by a love of science. And that's a sight worth talking about.
Answer: She is fed up with the issue of gender discrimination .

SOLUTION: Why doesn't the author want to talk about being a woman scientist again?

PROBLEM: Article: Swan Lake Ballet When: Aug. 27, 2010 19:15 Where: Shanghai Grand Theatre Ticket: 80/180/280/380 RMB pre-sale (before Aug. 28) Description: Swan Lakeis ballet at its best. There are only two Swan Lake performances this month so get your tickets fast!Swan Laketells the tale of princess who's turned into a swan, and a prince who falls in love with her and struggles to save her from the spell in order to be with her. In the Mood for Love Ballet When: Aug. 31, 2010 19:15 Where: Shanghai Grand Theatre Ticket:80/180/280/380 RMB Description: A truly Chinese ballet, In the Mood for Loveis set in 1930's Shanghai and tells a story of two neighbors who fall in love . There will be some drama between these two characters which will be expressed and transferred to the audience through dance. The costumes are impressive and beautifully represent women's fashion back in the day. 2010 Jazz Festival Shanghai When: Aug. 29, 2010 12:00--23:00 Where: Pudong Century Park Tickets: 150RMB 1 day ticket / 200 RMB 2 day ticket Description: Shanghai turns into a city of jazz this October. Music fans will be able to enjoy a selection of jazz, blues, funk and reggae on the grass of Century Park and the festival includes 129 bands from 32 different countries and performances by three popular rock stars. Full Moon Beach Party When: Aug. 28, 2010 21:30 Where: Sanjiagang Beach Resort Ticket: 180RMB /150 RMB pre-sale (before Aug. 22) Description: Full Moon Beach Party is coming straight to the shores of Shanghai.
Answer: Full Moon Beach Party and Swan Lake Ballet

SOLUTION:
Which of the following can you buy tickets in advance according to the text?