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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: Environmental protection is frequently talked about nowadays. The authorities are doing their best to arise the public awareness of the vital importance of the environmental protection. This issue is, indeed, worth following up. Environmental protection is closely related not only to our personal life, but also to the entire human race and the world's further development. For one thing, the environment, in a narrow sense, determines the quality of our individual life. The air we breathe, the water we drink, the food we eat, etc. , all come directly from the environment. If they continue to be contaminated, we may have neither clean water, nor healthy food. For another thing, in a broader sense, the environment plays a decisive role in fate of mankind. As is known to all, the earth, up to now, is human being's only dwelling place. We can expect that some day we will live on another planet, but I doubt that this day will come earlier than the day when the earth becomes a globe of waste, if we keep damaging the environment. Finally, the environment is essential to the further development of the world. Extensive industrialization, which has brought about all the convenience and facilities we enjoy today, has been depending on the comprehensive exploitation of the earth's natural resources found in the environment. If we do not protect the environment properly, further development cannot be guaranteed. In a word, to protect the environment is an urgent task. Nevertheless, environmental protection is indeed a demanding task. Many people are still, either unconscious of the urgency of the task or deliberately damaging the environment for the interests of their own. Hence, we should adopt severe measures to prohibit people from doing more harms to the environment. Meanwhile, we need to make the gravity of the present situation known to all. In other words, punishment and instruction should be equally emphasized. Only in this way can we look forward to a cleaner and greener world.
Answer: stress the importance of protecting environment
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The author's purpose in writing the passage is to _ .

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Article: It is common for older people to forget things. Now an American study has found that memory starts to fail when we are young adults. People younger than thirty years of age usually do not know that they are starting to forget information. But scientists from the University of Michigan say the loss of memory has usually already started. Researchers say people do not observe this slow reduction in mental ability until the loss affects their everyday activities. Denise Park led the new study. She directs the Centre for Aging and Cognition at the Institute for Social Research at the University of Michigan. Her team studied more than 350 men and women between the ages of twenty and ninety years. The study identified people in their middle twenties with memory problems. She says young adults do not know they are forgetting things because their brains have more information than they need. But she says that people in their twenties and thirties are losing memory at the same rate as people in their sixties and seventies. Ms. Park says people between the ages of sixty and seventy may note the decrease in their mental abilities. They begin to observe that they are having more trouble remembering and learning new information. The study found that older adults are more likely to remember false information as being true. For example, they remembered false medical claims as being true. Younger people remembered hearing the information. But they were more likely to remember that it was false. Ms. Park is now using modern imaging equipment to study what happens in the brains of people of different ages. She is studying what parts of the brain older adults use for different activities compared to younger adults. Ms. Park says mental performance is a direct result of brain activity and brain structure. She says keeping the brain active is important. She hopes future studies will identify ways to improve the operation of our aging minds.
Answer: introduce effective ways to improve memory
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The passage is meant to _ .

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Article: When many people in the west think of China, the animal that they think of is the dragon. For them, the dragon is an aggressive monster that breathes fire. Many popular legends tell how dragons have killed brave knights and eaten beautiful young girls. For Chinese people, however, the dragon is not an evil monster. It's a cultural and spiritual symbol for prosperity and good luck. The dragon's main task is to create harmony and bring rain. Dragons are celebrated in art and architecture, and of course the dragon dance is a very popular ritual . China isn't the only country to have the dragon as its symbol. Wales in the UK, has a red dragon proudly displayed on its flag. Another country in the world with a dragon on its flag is Bhutan, a tiny country between China and India. Almost all countries in the world have an animal symbol representing their countries. This is particularly obvious during sports. The English think lions to be brave and proud animal and the English football teams have three lions on their football shirts. Australia is famous for kangaroos, of course. The national rugby team is more commonly known as the Wallabies, a type of small kangaroo.The South African team is known as the Springboks, a type of African antelope. Likewise the New Zealanders, whether playing sports or not, are commonly known as kiwis. A kiwi is a native New Zealand bird that can't fly. All countries are proud of their symbols, which they feel reflect national characteristics or the beauty and variety of their natural environments. Recently, a Shang hai professor claimed that using the dragon as a national symbol could make western countries have a negative view of China. But in an Internet survey 90% of Chinese people wanted to keep the dragon.
Answer: a terrible animal that is not popular
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In the opinion of the west, the dragon is _ .