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.

[Q]: Article: Have you ever imagined what the world will be in the near future? A recent study shows that the world in 2100 will be more crowded, more polluted and less stable ecologically than the world we live in now. Visible ahead is serious stress involving population, resource and environment. Despite greater food output, people in the world will be poorer in many ways than they are today. For hundred of millions of the extremely poor, the outlook for food and other necessities of life will be no better, for many it will be worse. While the economies of the developing countries are expected to grow at a faster rate than those of the industrialized nation, the total national product per head in most less developed countries remains low. The existing gap between the rich and poor nations will further widen. World food production is estimated to increase by 90 percent from 2000 to 2100. Most of that increase goes to the countries that already have higher per-head food consumption. Meanwhile, per-head consumption of food in the developing countries will scarcely improve or will actually fall far below the present inadequate level. What is worse is that prices for food are expected to double. As a result, many less developed countries will have increasing difficulties meeting energy needs. For the one quarter of mankind that depends primarily on wood for fuel, the outlook is not hopeful. Regional water shortage will become more sever. In the 1970-2100 period population growth will require twice as much water as it does today in nearly half the world. Still greater increases would be needed to improve standards of living. Development of new water supply will become more costly.
Answer: the living standard of the world's population will improve greatly
[A]: According to the passage, in 2100 while output of food will be greater, _ .

[Q]: Article: Hercule Poirot looked over the small gate which gave admission to Pine Crest. It was a modern nicely-built house. It was on a hill top, and the hill top was planted with a few sparse pines. It had a small neat garden and a large elderly man was watering with a big tin. Spence's hair was now grey all over. He had not shrunk much in girth , though. He stopped watering and looked at the visitor at the gate. Hercule Poirot stood there without moving. "God bless my soul," said Spence. "It must be. It can't be but it is. Yes, it must be Hercule Poirot!" "Aha," said Poirot, "you remember me. I'm grateful." Spence abandoned the watering can and came down to the gate. "What brings you down here?" "What has brought me to many places in my time," said Poirot, "and what once a good many years ago brought you to see me. Murder, Spence." "I'm done with murder since I retired," said Spence, "except in the case of weeds. Killing weeds is never easy as you think, something's always wrong. How did you know where to find me?" he asked as he opened the gate and Poirot passed through. "You sent me a Christmas card. It had your new address on it." "Ah yes, so I did. I'm old-fashioned, you know, I like to send round cards at Christmas time to a few old friends. I'm an old man now." "We both are." "Not much grey in your hair," said Spence. "I take care of my hair with a bottle," said Poirot. "There is no need to appear in public with grey hair unless you wish to do so. By the way, why have you come to live in Woodleigh Common?" "As a matter of fact, I came here to join forces with a sister of mine. She lost her husband, her children are married and living abroad. So I moved in here. Pensions don't go far nowadays, but we do comfortably living together."
Answer: Poirot's recent life
[A]: From their dialogue, we can learn about _ .

[Q]: Article: Nearly 300 miles long, up to 18 miles across and 4000 vertical feet down, the 8th new wonder: the splendid Grand Canyon . Viewing its glory, President Theodore Roosevelt called the Grand Canyon "a natural wonder, ly unparalleled throughout the rest of the world". He urged Americans to preserve what he described as the "wonderful greatness, the nobleness, the great loneliness and the beauty of the canyon". More than a hundred years later, it's still easy to see why almost 5 million annual visitors call the Grand Canyon a wonder. The canyon stretches as far as the eye can see. Some 5 or 6 million years ago, the Colorado River rushed through this land, carving out the massive canyon we see today, exposing even older layers of rock previously buried. Geologists say some are 2,000 million years old. Native Americans were the first people to make these rocky walls as their homes about 12,000 years ago. Today the Hualapi and Havasupai Indians live deep in the canyon, balancing age-old traditions with modernity. There are no roads to this village; mules carry the mail here. But at the same time, the tribes are designing a skywalk that promises an excellent view over the canyon early next year. The bald eagle, wild and endangered American icon is another longtime resident of the Grand Canyon.
Answer: Washington
[A]:
President _ sang high praise for the Grand Canyon.