In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Q: Article: For centuries Stonehenge has mystified and enraptured archaeologists and visitors. So maybe it is not surprising that another monumental wonder from prehistory has been overlooked for so long - even though it is just a mile away. Experts have discovered an 'extraordinary' line of giant stones that dates back more than 4,500 years. The area around Stonehenge is littered with prehistoric sights but the 90 or more stones, lying 3ft underground, have only just been discovered by sophisticated radar equipment towed by radar equipment. The buried monoliths are each up to 15ft tall. Instead of being arranged in a circle as they are at Stonehenge, it is thought they once formed a long standing line. 'We are looking at one of the largest stone monuments in Europe and it has been under our noses for something like 4,000 years,' said Professor Vince Gaffney, from the University of Bradford, one of the archaeologists leading the research. 'It's truly remarkable. We don't think there's anything quite like this anywhere else in the world. This is completely new and the scale is extraordinary." Prof. Gaffney believes the stones may have been planted by the same people who built Stonehenge, but he doubts whether there is a direct link between the two monuments. These stones were placed along a steep slope, cut into a natural dry valley to form a C-shaped feature. Precisely why the stones were put there remains a mystery. The archaeologists believe that at some stage the stones were pushed over. This was not done to damage the monument but rather to preserve whatever it was about the stones that seemed so important. "There was a transformation in the landscape that we do not understand," Prof. Gaffney said. "The stones had significance. These were special places. Societies were organized, as with the great cathedrals, to create these things."
Answer: It is the largest stone monument all over the world.

A: What can we know about Stonehenge from the passage?
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Q: Article: Deng Nannan, 15, used to hate drinking milk for breakfast. But she had to drink it because her mom, as well as many others, said that milk was good for her growing body. Besides, milk and bread made up a convenient diet that saved her parents a lot of time after Deng entered junior school and had to arrive at school early in the morning. After that, Mengniu and Yili became her favorite brands of morning milk and yoghurt after dinner. However, she has been forced to change her diet since the recent milk crisis. Many best-selling milk brands such as Mengniu, Yili and Bright were discovered to contain melamine , which is usually used to make plastic. The bad milk products have sickened more than 5,300 babies and killed four. "I shifted to rice porridge," she said. "My mom has to get up at 5:50 am to prepare my breakfast and make sure that it cools down when I get up." Deng has become addicted to milk, so she doesn't quite enjoy her morning meal these days although she knows that it's a tiring job for her working mom. "I'll turn back to Mengniu and Yili when they finally improve their products," she said. However, right now Deng's mom tries to adjust her eating habits by cooking different foods. Besides rice porridge, noodles, egg soup and soybean milk are prepared as her breakfast.
Answer: Because milk becomes more and more expensive.

A: According to the passage, why do some students stop drinking milk?
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Q: Article: Lillian was a young girl who grew up in a village. At the age of 16, her father forced her to drop out of school and find a job to help the family. With limited education, skills and hope, she would take the bus into the big cities of Windsor and Detroit, walk aimlessly about and then return home every day. She couldn't even bring herself to knock on a door. As the days passed, Lillian knew she would soon have to knock on a door. On one of her trips, Lillian saw a sign at Carhartt Overall Company, saying, "Help Wanted, Secretarial. Apply Within." She walked up to the office and was met by the office manager, who sat her down at a typewriter and said, "Let's see how good you really are." She directed Lillian to type a single letter and then left. Lillian looked at the clock: 11:40 am. She figured that she could run away in the crowd then. But she knew she should at least try the letter. On her first try, she got through one line. It had five words and she made four mistakes. The clock read 11:45. "At noon," she said to herself, " _ ." On her second try, Lillian got through a full paragraph, but still made many mistakes. Again she pulled out the paper. At last she completed the letter with some mistakes. Just then, the door opened and the office manager walked in. She came directly over to Lillian, read the letter, paused and then said, "Lillian, you've done a good job."
Answer: She wanted to test Lillian

A:
Why did the office manager leave after directing Lillian to type a letter?
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