Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Mr. Green is a famous writer now. But he said he was not a good student when he was young. He was often late for school and didn't like doing his homework. Sometimes he slept in class while the teacher was teaching. He didn't understand much, but he always thought he understood everything. One day the teacher asked the students a question, "When John was ten years old, his brother was twenty. John is fifteen now and how old is his brother?" Mr. Green answered, "That's easy. His brother is twice as old as John, so he is now thirty." Another time, the teacher in a science class asked, "When it thunders , why do we always see the light before we hear the sound?" "But, Miss White," said Mr. Green quickly, "can't you see our eyes are in front of our ears?" The third time, the teacher in a biology class asked, "Why can fish swim in the water?" "But, Miss White," said Mr. Green quickly, "don't you know fish can't walk on land?" Options: A light goes faster than sound B our eyes are in front of our ears C our eyes are cleverer than our ears D our eyes can see but our ears can't Answer: B our eyes are in front of our ears Question:
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The answer is:
Mr. Green think when it thunders, we always see the light before we hear the sound because _ .

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: It was Mother's Day, but the young mother was a little unhappy, because she was 800 miles away from her parents. In the morning she phoned her mother to wish her a happy Mother's Day, and her mother told her about the beautiful lilacs in the garden. Later that day, when she told her husband about the lilacs, he said, "I know where we can find all that you want. Get the children and come on." So they went, driving down the country roads. There on a small hill, they saw a lot of beautiful purple lilacs. The young woman ran quickly to enjoy the flowers. Carefully, she picked a few here and there. On their way home there was a smile on her face. When they were passing an old people's home, the young woman saw an old granny sitting in a chair. They stopped the ear and the young woman walked to the old woman, put the flowers in her hands, and smiled at her. The old granny thanked her again and again. She smiled happily, too. When the young mother came back to her car, her children asked her, "Who is the old granny? Why did you give our flowers to her? I don't know her," their mother said. "But it's Mother's Day, and she has no children. I have all of you, and I still have my mother. Just think how much those flowers meant to her." Options: A she didn't have a present B she was far away from her mother C she didn't know it was Mother's Day D she wanted to see her father Answer: C she didn't know it was Mother's Day Question:
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The answer is:
The young woman was a little unhappy on Mother's Day because _ .

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Bicycles, a long-forgotten vehicle that seems to belong to the last century, are returning to the streets of Guangzhou, as the city starts to ban the running of motorcycle in urban Guangzhou. "Business has never been so good for my shop," said Chen Yongwu, a bicycle shop owner at the city's Donghua West Road, "I have to work 12 hours a day to meet the demand of my customers. " "Even my wife and brother-in-law have to give me a hand lately. " Chen originally ran a motorcycle repair shop. He grasped the opportunity of the motorcycle ban, and started his bicycle business soon after hearing about the banning. "I sold 23 bicycles on January 2 alone. " Said Chen. Bicycle is more convenient and healthier "My home is one kilometer from the metro station," said a middle-aged man who is waiting for his bicycle at Chen's shop, "it is too tiresome to walk to the station, but taking a bus for such a short distance is a waste of money. " "So I decided to buy a bicycle. " The bicycle costs around 600 yuan, which is equal to the bus fare of half a year. "Besides, riding a bicycle to work is much healthier than riding a bus. " The bicycle buyers can be categorized into two groups. One group of buyers buy the bicycles for the transportation of small commodities; the other ride the bicycles to work. Arising problems Riding a bicycle to work may be healthy, but it is not without problems. The lack of bicycle lanes has posed a big threat to the safety of the bicycle riders in Guangzhou. "I was riding my bicycle on Huifu West Road on day," said Mr. Zhang, "then suddenly the bus pulled over besides me near the bus station. " "I was so frightened at the time, because the bus nearly hit me. " The sideways in Guangzhou are usually crowded with foot passengers, so citizens also could not use the sideways. "It is worse than walking. " Besides, finding a place a park the bicycles could be very difficult, much more difficult then finding a place to park your car. Options: A A magazine B A newspaper C A textbook D A booklet Answer: B A newspaper Question:
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The answer is:
Where can the passage most likely come from?