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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." Question: Which city was not affected by the smoggy weather on Saturday? Yes or no, is the answer "Hainan"?
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No

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Article: Different from popular thoughts, colds are not caused by bad weather. Colds are caused by viruses in the body, and you are better out on the snowy day than you are in a warm room, with your friends, who just may be passing the virus around. If you feel a chill when you are coming down with a cold, you are already sick. A chill is an early sign of the cold. The virus can spread through air when a cold - sufferer coughs or sneezes. Surprisingly, this is not the most usual way of spreading, Many studies have now shown that most colds are " caught " by hands. A cold - sufferer rubs her nose, so spreading the virus to her hand. Then a friend comes to visit her. They shake their hands. The friend then gets something to eat by hand, and several days later she catches a cold. Although some parents pick up their children's tissues and carefully throw them away, they fail to wash their hands. They'll catch the colds, too. Cold viruses can also be spread by objects, for example, telephones, plates. The cold - sufferer as well as other members of the house, by washing their hands often, will stop the viruses from spreading in a way . Question: Colds are caused by _ . Yes or no, is the answer "viruses"?
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No

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Article: My summer holiday began on July 5th. I didn't want to stay at home and did nothing in the hot summer. I called my grandma, and she asked me to go to her village. I was very happy with it. After four hours, I got to my grandma's house by bus. There are many trees around her house. I liked to play games with other children during the day. At night, people in the neighborhood often came and sat together to chat. My grandma liked telling stories. My new friends and I enjoyed her stories very much. There is a pool in the village. My friends and I often went there with some food and _ fish in the pool. Then we cooked the fish and had dinner there. It was not easy to catch fish, but it was interesting and exciting. I stayed there for about a month, and then I went back home. Question: When might the writer go back home? Yes or no, is the answer "On August 5th."?
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No