input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: In South America, the rich soil of the Amazon River basin in Brazil is known as "black gold". Scientists found that the secret of this rich soil was charcoal . Local people made it from animal bones and tree branches. They mixed the charcoal with the soil about 1.500 years ago. Now, scientists in the United States have done a modern demonstration. They say charcoal fertilization offers a revolutionary way to improve soil quality for hundreds or even thousands of years. Mingxin Guo and his team at Delavare State University heated tree leaves, corn stalks , small pieces of wood and poultry waste into "biochar" . They reported their findings at a recent meeting of the American Chemical Society in New Orleans. Biochar could be good news for farmers with poor soil and hungry populations to feed. Professor Guo says it could even help against global warming. Intensive farming and overuse of chemical fertilizer give out carbon dioxide into the atmosphere. Biochar does the opposite, he says. It traps carbon in the ground. The researchers planted winter wheat in containers of soil in a greenhouse -- some with biochar, some without. Professor Guo says the wheat grows much better in the pots with biochar. The soil was added two percent charcoal to. But he says even a one percent treatment will increase productivity. The results demonstrated that biochar can increase organic matter in soil. Loss of nutrients in soil is an increasing problem worldwide as farmers try to grow more food for growing populations. Next, the team will carry out a five-year study of biochar with spinach , green peppers and tomatoes. Mingxin Guo says he learns about the "black gold" in Brazil from a magazine story. He explains that it was discovered in the jungle, in the area where waters flow to the Amazon, in the 1960's. But it was not until recent years that scientists began to bring public attention to it. Options: A it can improve the condition of the soil B it can be used as a kind of energy C it can help against global warming D it can increase productivity of the corn Answer: B it can be used as a kind of energy Question:
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output: Biochar has the following advantages EXCEPT that _ .

Please answer this: Write a multi-choice question for the following article, with the given choices and answer: Article: Few of us haven't read Cinderella , the story of a young woman living in poverty who meets the prince of her dreams. Some might not want to admit it, but there is a hidden Cinderella in everyone's heart--we all wish we could achieve recognition or success after a period of obscurity . Mary Santiago has that secret dream, too. Her story is featured in Another Cinderella Story, a film set in a US high school. Mary is shy but loves to dance. Compared with other girls, she is invisible. However, her world changes completely when a famous teenager pop singer, Joey Parker, appears. Joey is everything the rest of the boys in her class are not--kind, handsome and desirable. Mary and Joey's paths cross at a ball. They meet and fall in love with each other. But when Mary has to rush back home, she leaves behind her MP3 player, which becomes the only clue Joey has to find the girl of his dreams. Of course, there is a wicked stepmother, who turns out to be Dominique Blatt and she takes in Mary after her dancer mother dies. Dominique treats Mary like a maid and does everything she can to make sure Mary doesn't get into the top dance school. Her two daughters are equally determined to stop Joey falling for Mary, even if that means embarrassing her. The story, though it mostly follows Cinderella, does add a few modern day twists to the classic fairy tale. Refreshingly, the film, unlike many high school films, does not focus on looks, although the actors are all beautiful. There is also a lot less materialism in Another Cinderella Story than in many similar movies. "The movie takes the Cinderella fairytale as its jumping off point," writes movie critic Amber Wilkinson, "The focus is firmly on following your dream." Options: A Joey is just like other boys in Mary's class. B Mary's mother influences her a lot in singing. C Not many people have a dream to be realized. D The MP3 player helps Joey in finding Mary. Answer: D The MP3 player helps Joey in finding Mary. Question:
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Answer: What can we infer from the passage?

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: South Korean Films An audience can view five new South Korean films, all with Chinese subtitles until April 19 at the Tuixin Cinema in the Beijing National Library grounds. Two other South Korean films completed their full runs at the Tuixin Cinema earlier this month. Location: Tuixin Cinema, Beijing National Library, 39 Baishiqiao Road, Haidian District. Tel: 86415566 "My Love My Bride" April 15: 9:00, 13:00, 15:30, 17:30, 19:30 "Kim's War" April 16: 9:00, 13:30, 18:15 "Because You Are a Woman" April 17: 13:30, 18:15 Marriage Story" April 18: 9:00, 13:30, 15:30, 18:15 "Sopyonje" April 19: 9:00, 13:30, 15:30, 17:30, 19:30 Leon's show Hong Kong pop star--Leon Lai will give a personal performance at 7:30pm from tomorrow through to September 21 at the Shanghai Gymnasium. The show is to celebrate the opening of the 93rd Huangpu Tourism Festival. Tickets: 60, 90, 120, 180 yuan RMB, available at 66 Jiangning Road. Tel: 29189188, 29171145, 49384952, 29197113 Russian concert The Shanghai Philharmonic Orchestra will put on some excellent Russian Orchestra works at 7:15pm on September 26 and 27 at the Shanghai Concert Hall. They will sing Russian folk songs and mass under a Russian Conductor who is very famous for conducting choirs and has given a successful choral concert in Beijing. Tickets: 6, 8, 10, 12 yuan RMB, available at the hall's ticket office. Address: 523 Yan'an Road W. Shanghai. Tel: 32275694. Korean songs The Song and Dance Troupe of North Korea will give a song and dance show at 7:30pm tonight at the Shanghai Center Theater. Tickets: 10, 20, 30 yuan RMB, available at the theater's ticket office. Address: 1376 Nanjing Road W. Shanghai. Tel: 29798663 Options: A Russian concert B Korean songs C South Korean films D Leon's show Answer: A Russian concert Question:???
output answer:
According to the advertisement, a six-yuan ticket is for _ .