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Article: No one really knows how the ancient Egyptians build the pyramids. But Maureen Clemmons has a theory . She thinks the Egyptians may have used kites. "If you look at ht top center of every monument , you see wings," Clemons said. "I think the Egyptians have been trying to tell us in pictures for 3,000 years that this is how they built the pyramids." She thinks that earliest Egyptian workers might make use of kites to lift the stones with the help of the desert wind. She got a team of aeronautic engineers to help her test the theory. Yesterday, in the Mojave Desert, they put their theory to the test using a nylon kite, three pulleys and an obelisk that weighs nearly four tons. The wind speed had to be just right. And amazingly, it worked. "There's ly no evidence for kites in ancient Egypt," said Professor Carol Redmount of the University of California. "There's no evidence of pulleys as we know them today." Redmount says the historical evidence points to the "Charlton Heston method," which basically relies on the theory of the muscle of slaves pushing and pulling huge stone blocks to create the pyramids. But the kite-lifting group will have none that. "All I can remember from history is that Egyptians drank beer for breakfast, lunch and dinner, and as someone who has done field research on drinking beer, I know after I've had two beers and it's really hot. I'm not pushing or pulling anything," Clemmons said. "So, I figured I'd try to think another way." Question: How did Clemmons prove that her idea was reasonable? Yes or no, is the answer "She had an experiment done to lift a large stone by using pulleys and a kite."?
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No

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Article: In the late 1500s, a large powerful gun was placed on top of the Signal Hill, in prefix = st1 /Newfoundland, to prevent attacks from the outside. Flags were also flown there to warn sailors of bad weather. It's fitting, then, the Italian Gulielmo Marconi should have chosen this site to receive the world's first radio signal -- in Morse code -- from England on December 12, 1901. Marconi, combining earlier ideas with his own, led us to a new communications age. For the next 50 years, until the appearance of television, radio ruled the air waves. Today, it's the TV that rules. No single person can say to have invented television. In 1884, the German Paul Nipkow invented a device that sent pictures mechanically , and in 1906, Boris Rosing, a Russian, used a ray and a disc to create the world's first TV system. Then in the early 1920s, another Russian, Vladimir Zworykin,invented a picture display tube. He took out a patent for color1 TV, even though it wouldn't be developed for another 25 years. In 1924, a Scot entered the scene -- John Logie Baird. He first succeeded in sending a moving picture and a year later got the first actual TV picture. In 1926, Baird showed TV in aLondonlaboratory. Two years later inNew York, Felix the Cat became the first TV star. TV excited everyone's imagination, but hardly anyone had a set, with just two thousand in use worldwide in the mid-1930s. Since the late 1940s, TV technology has developed very quickly. Computers may finally be combined with all televisions to give people a total all-in-one communications network. Today, it's possible to sit and watch TV in the middle of a forest or in the Arctic. It's surprising when one considers that Marconi was on Signal Hill in the same century. Question: We can learn from the text that Signal Hill was once used as _ . Yes or no, is the answer "a site of communication"?
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No

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Article: Should we say goodbye to chivalry in the age of sex equality? Chivalry began as a response to the violence of the Middle Ages. PierMassimo Forni, the founder of the Civility Institute, says chivalry "as a form of treatment inspired by the sense that there was something special about women and that they deserve added respect." Today "chivalry" is often used as a term for "gentlemanly" behavior, related to "fair sex", honor, courage and loyalty. But we can hardly see chivalry nowadays with many women demanding to be treated equally in the workplace. According to a 2013 survey carried out by the British Daily Mail, only one in seven men will offer their seat to a woman on a bus or train; over three-quarters of men don't offer to help carry a heavy bag or suitcase for women. In many cases, it's not because these men are being insensitive, but on the contrary, they say they are unwilling to help women because they are worried about making them embarrassed. These men may worry too much. According to the same survey, only seven percent of women view acts like holding open doors as unpleasant. "Men seem confused by the modern 'sex equality' message", psychologist and relationship expert Donna Dawson told the Daily Mail. "This message was meant for the workplace and was never meant to replace good manners. Men will always be the stronger sex physically, so it is natural for them to show consideration for women." So, should the acts of chivalry be brought back? US writer Emily Smith says chivalry is what we should all long for. Many people are predicting the death of chivalry, but chivalry is not dead yet. Slowly but surely, chivalry is making a come-back. Question: The question at the very beginning of the passage is used to _ . Yes or no, is the answer "introduce a controversial topic"?
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No