input question: Write a multi-choice question for the following article, with the given choices and answer: Article: The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two pieces will probably hit the southern half of the Earth. On 17 July, a piece four kilometers wide enters the Earth's atmosphere with a massive explosion. About half of the piece is destroyed, but the remaining part hits the South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in the sea bed. Huge waves are created and spread outwards from the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned. Before the waves reach South America, the second piece of the comet lands in Argentina. Earthquakes and volcanoes are set off in the Andes Mountains. The shock waves move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions of people in the southern half of the earth are already dead, but the north won't escape for long. Because of the explosions, the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. The sun won't be seen again for many years. Wars break out as countries fight for food. A year later, no more than 10 million people remain alive. Could it really happen? Will we meet the same end? Options: A Because the land is covered with water B Because people there can not live at the temperature of zero. C Because the light and heat from the sun can not reach the earth. D Because wars break out among countries . Answer: C Because the light and heat from the sun can not reach the earth. Question:???
output answer: Why can't the northern half of the earth escape for long?

Write a multi-choice question for the following article, with the given choices and answer: Article: I was 20 years old when my mother passed away. It was the first real blow that life had dealt me, and I thought I would never recover. Then, by the time the following spring came, the pain was almost bearable and again I could find pleasure in the miraculous reward of nature. At first, I went to the cemetery with trepidation. But then, amazingly, by tending her grave and decorating it with flowers, I was ridding myself of the painful memories. The years passed. I moved from Kaposvar, Hungary, the town where I had been born and had spent my youth. So did my siblings. We only came together on feast days, especially on All Souls' Day in the cemetery. Father lived with me for many years, to a ripe old age. Now that he, too, rests beneath the white marble stone, I go even more eagerly to the cemetery. While I tend my parents' grave site, again I am with them in thought. One day I noticed a modest grave site behind my parents' plot. It lay among the magnificent granite and marble markers of the other graves, its very simplicity _ . Ivy had covered the site and its only decoration was a simple wooden cross on which was written in copper letters a name, and that she lived 22 years. Whenever I went by, the plot and its surroundings looked cared for and neat, and each time I felt curious about this mysterious woman who had lived all of 22 years. Once I saw an elderly man leaving from there. I concluded that perhaps he had come to visit his wife. In 1996 I was preparing for All Souls' Day in the cemetery when again I caught sight of him, tending the grave. Tall, somewhat bent, he was well passed middle age. We nodded to each other and continued our work. Occasionally I stole a glance at my neighbor. When I noticed that he hadn't got the tools for a proper cleanup, I offered him mine, which he gratefully accepted. After this, it seemed only natural to engage him in conversation. I asked him whose grave it was. This was his answer: "My mother's. She died young, in 1912 when I was only a year-and-a half old. I really... Options: A the author's mother died young and her father, too B the author's mother is dead while her father enjoys a long life C the man's mother died very young before he was born D the author's father lived long while the man's mother died very young Answer: D the author's father lived long while the man's mother died very young Question:
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Answer: From the passage, we know _ .

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Wearing ties was originally the mark of Britain's most powerful classes, which made the tie itself a symbol of power and respect. And that led it to be adopted by a much larger tribe--the business tribe. You cannot wear a tie if you work with machinery. So wearing a tie became a sign that you were a man who used your brain to make a living, rather than your hands. It showed you were serious. It showed you were a professional. It meant that everyone who wanted a job in business had to wear one. It was just impossible to take seriously a man who didn't wear a piece of color1ed silk around his neck. This is how millions of people came to be wearing ties across the world. They are part of the uniform of business. "Ties offer a point of indifference," says John Milne, head of the British Guide of Tie Makers. "They give a chance to say something about their own personality." So if you happen to meet a man with a very brightly color1ed tie, there is a good chance that he is the office joker. There is also a good chance that he will be wearing brightly color1ed socks. Is there a future for ties? The signs are not promising. Tie wearing seems to be rare among the new bread of entrepreneurs in the Internet and new technology industries. Many political leaders,including British Prime Minister Tony Blair, now go without ties. This shows they are men of the people--but not the people wearing ties. Up until around 1960, it was common for men across the Western world to wear hats as part of their business uniform. That changed with the election of John F. Kennedy to the presidency of the United States. Kennedy never wore a hat in fact his nickname was"hatless Jack". Seeing that the most powerful man in the world did not have to wear a hat, millions of other men decided that they did not have to, either. Hats simply vanished across the Western world. Perhaps"tieless Tony"(UK Prime Minister Tony Blair) will have the same effect as "hatless Jack". Options: A personality B social position C job D favorite hobby Answer: B social position Question:
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The answer is:
In Britain, ties were first used as a sign to show a person's _ .