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In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
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Article: winter-swimming has become popular in Beijing. three years ago, few people would go swimming in the city waters. but now there is a winter-swimming enthusiasts'club and it has more than 2,000 members. the oldest is 84 years of age and the youngest is only 7. _ They may be workers, peasants, soldiers, teachers, students....Though it is now the coldest part of the season and the water temperature in the city's lakes is around 0degc, many winter-simmers still swim in the icy waters, even when it is snowing. They enjoy themselves in the lake, while the people by the side of the lake are wearing heavy clothes. why are so many people interested in winter-swimming? Because winter-swimming can be good for one's health. Bei Sha is a good example. He is 69 years old, and he once suffered from heart trouble for 26 years. After ten years of winter-swimming he is now in good health. Scientists are now studying the effects of winter-swimming on health. 
 Answer: The members do different jobs at different places.
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Guess what "the members are from all walks of life" means   _     .


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Article: My oldest child, Emma, just returned to campus after a long holiday break to finish up her last period of college. These days, friends and family have begun flooding me with one question: What is she going to do after graduation? The job market is, after all, awfully tough. Just this month the Federal Reserve Bank published a study showing that "recent graduates are increasingly working in low-paid jobs or working part-time." The bright spot, according to the study, is for students who majored  in STEM-- science, technology, engineering and mathematics -- areas in which recent graduates "have tended to do relatively well". But Emma is a student of the humanities  at a small college. She's an American Studies major with a focus on the politics and culture of food. For quite a while, I think her field of study is so fashionable right now that I'm not the least bit worried she will find a good job. Yet the more I've thought about it, the more I've decided to be honest. "I'm not sure what Emma is going to do," I now say. "But she's gotten a great education and has really found her interest. -- and I know those things will serve her well over the course of her life." Nowadays, more and more universities and colleges are being measured by the salaries of their recent graduates. In this climate, encouraging your kid to study the humanities, seems, at best, unwise or, at worst, unconcerned with earning a living. But a college is not a vocational  school. And promoting STEM subjects should not be society's only answer to helping the next generation grow in a competitive world. From the beginning, we never urged Emma to pick a college or a major with an eye on its expected return on money, as more and more families are doing. To Emma, what really matters will be something that we may not be able to measure for quite a long time: Emma's contribution to the world and how happy she is in it. 
 Answer: are worried about the job market
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The author's friends and family  _  .


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Article: Researchers in the US say they might have discovered how to fight against and even _ some processes of ageing, at least in mice. Injecting the blood of young mice into the older ones improved their brainpower, a study found. Scientists at Stanford University plan to carry out trials in people in the hope that new treatments for dementia  can be developed. "There are factors present in blood from young mice that can recharge an old mouse's brain so that it functions more like a younger one,"says Dr. Tony from Stanford University School of medicine. In the study published in Nature Medicine, mice aged 18 months were given injections of the blood taken from mice aged 3 months. The injected mice performed better on memory tests than mice of the same age that had not been given the blood. Dr. Tony said it was not known whether the same was true of humans, but a trial was planned. A research center in UK said the treatment restored certain aspects of learning and memory in mice, but was of unknown importance to humans. The research, while very interesting, did not test the type of brain damage that was seen in dementia, which is not a necessary consequence of ageing. Meanwhile, two similar studies by a separate team have thrown more light on how young blood may benefit the old, in mice at least. A substance in the blood of mice previously shown to have an anti-ageing effect on heart muscle also improved brain cells, according to a Harvard team. The research, published in Science, found the blood factors encouraged the growth of brain cells in old mice, and restored their sense of smell. The same chemical also improved muscle power of aged mice, the researchers found. 
 Answer: treating an age-related disease successfully.
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Scientists in the US will test the discovery in humans with the aim of   _  .


