Article: London used to be "foggy" for the same reason that cities like Beijing or Chongqing are "foggy" today. The "fog" was in fact smog, a mixture of smoke and fog. In other words, it was made by air pollution. In London, some of this pollution came from factories, but much of it came from the coal that people burnt in their houses to keep warm during the winter. By the 1950s, London's smog problem had become so bad that the government decided to do something to clean the air. A new law was made and nobody could burn coal in any British city. Within a few years, the air became much cleaner. There were no more " _ ". Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago. However, this problem is more difficult for Chinese cities to solve. One reason is that more of the pollution comes from the factories, rather than from coal burnt in people's houses. If these factories were closed, this would harm the economy and lots of people would lose their jobs. Another reason is that changing from coal to cleaner fuel , like gas, is quite expensive. However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution. As a result, there are fewer "pea-soupers" in Beijing than there used to be. Question: Which sentence is NOT true? Yes or no, is the answer "Using coal is much more expensive than using gas."?
No

Article: If you are really interested in music festivals, then you have probably heard of the Bestival Music Festival. It takes place every September on the Isle of Wight, the UK. As it is at the end of summer, people think it's their last chance to go to a festival and have fun before going back to boring work. The dream begins as soon as you start traveling to the island. In order to get to the campsite of the Bestival, you have to take the ferry . The ferry is full of happy festival lovers who are ready to take part in the fantastic music party. After you arrive at the campsite, you can put your tent up. There people talk with each other openly. They are not that cold like those you meet in your everyday life. The festival lasts for four days. During that time you forget all your worries and problems, just like living in a dream. And it is really hard for you to come back to "reality" after that. It seems that it is this kind of music event that makes people gather together. It gives people a real sense of unity. I took part in the Bestival with my friends the year before last. It was so exciting and we all lost ourselves in the beautiful music. We are family sung by Sister Sledge was my favorite. I'm really looking forward to joining in it for a second time. Question: Which of the following is NOT true according to the passage? Yes or no, is the answer "The Bestival is held every September in the US."?
No

Article: THE human face doesn't lie. We show sadness and happiness through our expressions. But exactly how many emotions can our face make?Scientists used to believe we had six basic facial expressions that tell others how we feel: sad, happy, surprised, fearful, angry and disgusted . But a new study shows that our faces can do more than we think. Scientists from Ohio State University found out that humans can actually make 21 different facial expressions after studying how people move their facial muscles. The scientists took pictures of 230 volunteers making faces in response to different cues .These cues included phrases like "you just got some great unexpected news", which produced a "happily surprised" reaction from volunteers. Other cues included "you smell a bad odor ", which caused "disgusted" faces. In total, around 5,000 pictures were taken of the volunteers. The scientists then studied similarities of these pictures using a computer expression database. _ helped them to define a facial expression. "That tells us that these 21 emotions are expressed in the same way by nearly everyone," said DrAleix Martinez to The Daily Telegraph. For example, to express surprise, 92 percent of volunteers widened their eyes and opened their mouth. And 99 percent raised their cheeks and smiled to show being happy. We are not always aware of our facial expressions, which can hold clues to how we really feel. So these results may have a big impact on medical treatment. If doctors were able to recognize more complex emotions, it would help doctors treat patients suffering from certain diseases. Question: Scientists used to believe how many basic facial expressions that tell others how we feel? Yes or no, is the answer "6"?
No