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.

Article: In the Caucasus region of Russia, nearly 50 out of every 100,000 people live to celebrate their 100th birthday, and many don't stop at 100! By comparison, in America only 3 people in 100,000 reach 100. But these Russian old people aren't alone. The Pakistanis, who live high in the Himalaya Mountains, and the Ecuadorans of the Andes Mountains seem to share the secret of long life, too. These people remain healthy in body and spirit despite the passage of time. While many older persons in industrial societies become weak and ill in their 60s and 70s, some Caucasians aged 100 to 140, work in the fields beside their great-great-grandchildren. Even the idea of aging is foreign to them. When asked "at what age does youth end?"most of these old people had no answer. Several replied, "Well, perhaps at age 80." What accounts for this ability to survive to such old age, and to survive so well?First of all, hard physical work is a way of life for all of these long-lived people. They begin their long days of physical labor as children and never seem to stop. For example, Mr . Rustam Mamedov is 142 years of age. His wife is 116 years old. They have been married for 90 years. Mr. Mamedov has no intention of retiring from his life as a farmer. "Why?What else would I do?"he asks. All these people get healthful rewards from the environment in which they work. They all come from mountainous regions. They live and work at elevations of 1,660 to 1,000 meters above sea level. The air has less oxygen and is pollution-free. This reduced-oxygen environment makes the heart and blood vessel system stronger. Another factor that may contribute to the good health of these people is their isolation. To a great extent, they are separated from the pressures and worries of industrial society. Inherited factors also play some role. Most of the longest-lived people had parents and grandparents who also reached very old ages. Good family genes may, therefore, be one factor in living longer.
Answer: are still working in the fields
The example of Mr. and Mrs. Mamedov implies that some Caucasians aged 100 to 140 _ .

Article: For the first time in modem history, less than half of theprefix = st1 /U.S.adult population now reads literature, according to a recent survey. Reading at Risk: A Survey of Literary Reading inAmericapresents a detailed review of the decline of reading's role in the nation's culture. Readingat Risk is a survey of national fashion in adult literary reading. The data source for Reading at Risk is as reliable and objective as any such survey can be. The key results of the survey are presented in the "Summary", but the report can be further explained as: literary reading in Americais not only declining rapidly among all groups, but the rate of decline has been speeded up, especially among the young.Readingat Risk merely shows a great _ that most Americans have already noted - our society's great turn to electronic media for entertainment and information. Reading a book requires a degree of active attention and devotion. Indeed, reading itself is a progressive skill that depends on years of education and practice. On the contrary, most electronic media such as television, recordings, and radio make fewer demands on their audiences, and indeed often require no more than passive participation. While oral culture has a rich reality and electronic media offer the considerable advantages of variety, print culture affords irreplaceable forms of focused attention and thought that make various communications and views possible. The decline in reading, therefore, equals a larger retreat from participation in public and cultural life. What is to be done? There is surely no single solution to the present problem, just as there is no single cause. The important thing now is to understand thatAmericacan no longer take active and devoted reading for granted. Readingis not a timeless, common ability. As more Americans lose this ability, our nation becomes less informed, active, and independent minded. These are not qualities that a free, inventive, or productive society can afford to lose.
Answer: review that less than half of the population now reads literature
The main purpose of the survey is to _ .

Article: Being able to multitask--doing several things at the same time--is considered a welcome skill by most people. But if we consider the situation of the young people aged from eight to eighteen, we should think again. What we often see nowadays is that young people juggle an ever larger number of electronic devices as they study. While working, they also surf on the Internet, send out emails, answer the telephone and listen to music on their iPods. In a sense, they are spending a significant amount of time in fruitless efforts as they multitask. Multitasking is even changing the relationship between family members. As young people around them. They can no longer greet family members when they enter the house, nor can they cat at the family table. Multitasking also affects young people's performance at university and in the workplace. When asked about their opinion of the effect of modern gadgets on their performance of tasks, many young people gave a positive response . However, the response from the worlds of education and business was not quite as positive. Educators feel that multitasking by children has a serious effect on later development of study skills. They believe that many college students now need help to improve their study skills. Similarly, employers feel that young people entering the job market need to be taught all over again, as modern gadgets have made it unnecessary for them to learn special skills to do their work.
Answer: presenting a cause and analyzing its effects
The author develops the passage mainly by _ .