Q: Article: Celebrate the arts at Harvard ARTS FIRST: April 28-May l, 2012 Experience non-stop art! Over 200 performances, exhibitions, films, and multimedia presentations Highlighting student and faculty creativity at Harvard. Schedule of events: www.ofa.fas.harvard.edu/arts, or call 617 495 8676 to request a program guide. Join us in honoring Susan Meiselas, winner of the 2012 Harvard Arts Medal Photographer Susan Meiselas will be awarded the Arts Medal by President Drew Gilpin Faust and will take part in a conversation organized by John Lithgow. Friday, April 29, 4 pm New College Theatre, 10-12 Holyoke St., Cambridge Admission free: tickets required. Those who receive this announcement may request up to two tickets by emailing www.ofa.fas.harvard.edu/arts or calling 617 495 8676. Please indicate one or two tickets, and reply by April 25. Question: How long will Harvard ARTS FIRST FESTIVAL last? Yes or no, is the answer "For four days."?
A: No

Q: Article: Discounts at various bicycle shops. Why Cycle with a Group? Getting to work by bicycle has never been more popular. Governments and nations are transforming their cities and highways to meet the needs of this new generation of cycling enthusiasts,and in a world where green choices are the new must-have, average citizens are eagerly seizing their chance to help make their bodies cleaner than ever before. Become an EBTC Member. Year round, organized by members like you! The Edmonton Bicycle and Touring Club(EBTC)is a recreational not-for-profit volunteer-run group devoted to promoting its members to cooperatively run bicycling trips during the spring, summer and fall, cross-country skiing trips in the winter, and social events all the year round. We welcome both road bike and mountain bike riders! Benefits of Joining EBTC: Opportunity to create the kinds of events you like:enjoy dozens of events. Participation in the local cycling community. Use of club bicycle tools on tour and library materials. It's more FUN! It encourages you to come out often and get healthy exercise without going to a gym. Develop skills and gain through the experience of others. Meet new and interesting people with a common interest in cycling. Meet a fun-loving,energetic and different group of individuals who enjoy a healthy lifestyle. Enjoy the outdoor experience with the companionship and security of a group. For more information on the EBTC: Phone the Club Hotline at 780-424-2453 E-mail:jprineau@edmontonbicycle.com Mail us at: Edmonton Bicycle & Touring Club P.O.Box 52017 Garneau Postal Stn. Edmonton,AB T6G 2T5 Canada Question: How many ways can people gain more information from EBTC according to the passage? Yes or no, is the answer "Three."?
A: No

Q: Article: WASHINGTON--Two-thirds of the world's polar bear population could be gone by 2050 if predictions of melting sea ice hold true, the US Geological Survey reported on Friday. The fate of polar bears could be even worse than that estimate, because sea ice in the Arctic might be disappearing faster than the available computer models predict, the geological survey said in a report aimed at determining whether the big white bear should be listed as a threatened species. "There is a definite link between changes in the sea ice and the welfare of polar bears," said Steve Amstrup, who led the research team. He says Arctic sea ice is already at the lowest this year and is expected to retreat farther this month. That means that polar bears--some 16,000 of them -- will disappear by 2050 from parts of the Arctic where sea ice is melting most rapidly, along the north coasts of Alaska and Russia, researchers said in a telephone briefing . Other polar bears could survive beyond that date but many of those could be gone by 2100, Amstrup said. By this century's end, the only polar bears left might live in the Canadian Arctic islands and along the west coast of Greenland. "It is likely to result in loss of approximately two-thirds of the world's current polar bear population by the mid 21st century," the report's executive summary said. "Because the observed trajectory of Arctic sea ice decline appears to be underestimated by currently available models, this assessment of future polar bear status may be conservative ." In January, the US Fish and Wildlife Service proposed listing the polar bear as a threatened species, noting polar bears depend on sea ice as a platform to hunt seals, their main food. Without enough sea ice, polar bears would be forced onto land, but they are poor hunters once they get out of the water and ice, the researchers said. The bears' disappearance would probably take place as young cubs failed to survive to adulthood and females were unable to reproduce successfully. Question: The key to preventing polar bears dying out seems to _ . Yes or no, is the answer "make sure there is enough sea ice in the Arctic"?
A: Yes

Q: Article: London has always been known for its "black fogs". In the winter of 1952, a milky white fog rolled into the city. As the smoke poured into the air, it was so hard to see that people had to walk in front of the buses to guide them. In this way, the most serious air pollution disaster in history began. When it was over, more than 4,000 people had been killed by the thick black smog. New York City has had several London-type smogs since 1950. Each time, 100 to 400 deaths were caused by the smog. Although these smogs were not as deadly as London's, New York City has the worst air pollution problem in the United States. In all the killer smogs, factories and homes poured smoke and fumes into the air from the furnaces. The chemical fumes combined with the water droplets in the fog to form harmful substances. These substances caused the illness of those who breathed the polluted air. Usually, such harmful fumes rise into the upper air and are blown away by the wind. But sometimes there is an unusual weather condition called a temperature inversion. A layer of cold air remains near the ground as smoke and fumes pour into it. This is covered by an upper layer of warm air that acts like a lid. It prevents the polluted cooler air from rising. The harmful fumes pile up and make people ill. The smog may be so thick that airports are closed and chains of collisions occur on the highways. Another type of smog occurs in Los Angeles. Here the weather may be clear and sunny. But stinging eyes and dry coughs show that harmful chemicals fill the air. The smog is due to invisible gases, mostly from automobile exhaust. Because these chemicals are changed by the sun high up in the air, it is called photochemical smog. It contains automobile exhaust fumes and nitrogen oxides changed by the sun's rays. Added to these are sulfur dioxide and other fumes from factories and oil refineries. Photochemical smog is found in many large cities all over the world. Killer smogs don't happen very often, fortunately. But in Beijing, a combination... Question: From the passage we know that the most serious black smog disaster took place in _ . Yes or no, is the answer "London"?
A: Yes