Question: Write a multi-choice question for the following article, with the given choices and answer: Article: BEIJING--Heavy haze still covered north and east China on Saturday, with highways closed and flights delayed or canceled . The smoggy weather affected the country's land from north to south, including Beijing, Hebei, Shandong, Jiangsu, Shanghai, Zhejiang, Hunan, Guangxi and Guangdong, with visibility less than 50 meters in some areas. Cities like Shanghai and Nanjing have been enveloped in the grey sky for the past several days. Many walkers in the street had to wear masks. In the Lukou airport in Nanjing, Jiangsu Province, more than 60 inbound and outbound flights were canceled on Saturday because of the hazy, which also forced primary and middle schools and kindergartens to stop classes on Thursday and Friday in Nanjing. The Ministry of Environmental Protection said earlier this week that there were several main reasons behind the widespread haze: unfavorable weather conditions making it difficult for pollutants to diffuse , motor vehicle exhaust , coal use for winter heating. The Chinese government now plans to clean up the air by cutting coal use, closing some factories and promoting cleaner production. "We must face up to the realities," said Yan Naiqiang, a professor of environmental science at Shanghai Jiao Tong University. "The treatment of smog will be a long battle." Options: A Bad weather conditions. B Too many flights. C Motor vehicle exhaust. D Coal use. Answer: B Too many flights. Question:
Answer: Which of the following is _ a reason for the heavy haze?

Question: Write a multi-choice question for the following article, with the given choices and answer: Article: Food is colorful. Some food is green, some food is red, and some is black. Now more and more people like to have black food--black rice, black beans, black grapes. Why do they like black food? * Black food can make grey hair into black hair. * Black food is good for the heart. * Black food can help children become smart. * Black food can also help women look young. Black food is very good, but we need food with different colors. Doctors say that it isn't good to be _ about food. So we had better eat all kinds of food. Options: A smart B young C old D tall Answer: A smart Question:
Answer: A seven-year-old boy often has black food, so he can become _ .

Question: Write a multi-choice question for the following article, with the given choices and answer: Article: I'm Tom. My best friends are John and Ann. We do many things together. John lives near my house and we are in the same class. He's fifteen years old and he's tall and slim. He has blond hair and blue eyes. He's polite and very clever. He's very good at math and he sometimes helps me with my homework. He usually wears jeans and a T-shirt. We also play basketball at a nearby park together and sometimes we play video games at my house after school. Our friend Ann isn't in our school. She's short and slim with straight brown hair and brown eyes. She's a little bit shy. We all have kung fu lesson every Tuesday and Friday afternoon. Ann is really good at kung fu. We call her the "kung fu kid". She sometimes plays basketball with us, too. She often wears a dress, a T-shirt and a baseball cap. The three of us have great fun together. Options: A Every Thursday and Wednesday afternoon. B Every Tuesday and Wednesday afternoon. C Every Tuesday and Friday afternoon. D Every Thursday and Tuesday afternoon. Answer: C Every Tuesday and Friday afternoon. Question:
Answer:
When do the children have kung fu lesson?