Read the following article and select the best answer. Article: Researchers and many scientists are concerned that the earth's climate and atmosphere are becoming warmer than they should be. What scientists do agree on is that the temperature will continue to increase if measures are not taken to reduce pollution and emission from cars and factories. It is widely agreed that oil and coal create greenhouse gases when they are burned to produce heat or power. These emissions include carbon dioxide, which is the cause of most of the global warming problem. The loss of the trees in many areas is making the problem worse, because trees and plants absorb carbon dioxide and release oxygen. The fewer trees that are left standing, the less carbon dioxide can be absorbed. Scientists predict that the sea level will rise, ice caps will melt, and some animals and plants will fail to survive because their habitat will disappear. There may be more deserts and less available farmland because of the dry ground, and there may be more storms and floods in many countries. Some countries, including the UK and the US, are taking steps to prevent the situation from becoming worse. There are programmes to educate citizens and students about the situation and recycling waste is becoming more common. New guidelines are being introduced to try to limit greenhouse gases from being produced by factories and businesses. Using more alternative energy sources is also a good way to prevent global warming. One thing that everyone can do is limit their use of energy every day, and you can do this no matter how old or young you are. Try to limit the unnecessary use of electricity and work to conserve energy every day. Question: What is the best title for the text? - How to Reduce Emissions - What Global Warming Brings - Take Action to Prevent Global Warming - No Emissions, No Warming
Take Action to Prevent Global Warming

Read the following article and select the best answer. Article: Farm-raised pigs are dirty, smelly animals that get no respect. They're also an environmental hazard. Their manure contains phosphorus ,which, when it rains, runs off into lakes and rivers, consuming oxygen, killing fish, stimulating algae overgrowth and emitting greenhouse gases. Doing away with the pig is not an option. Pigs provide more dietary protein, more cheaply, to more people than any other animal. Northern Europe still maintains the highest pig-to-human ratio in the world (2-1 in Denmark), but East Asia is catching up. During the 1990s, pork production doubled in Vietnam and grew by 70 percent in China--along densely populated coastlines, pig density exceeds 100 animals per square kilometer. The resulting pollution is "threatening fragile coastal marine habitats including mangroves ,coral reefs and sea grasses ,"according to a report released in February by the Food and Agriculture Organization of the United Nations. As it turns out, there is a solution to the pig problem, but it requires a change of mind-set among environmentalists and the public. Two Canadian scientists have created a pig whose manure doesn't contain very much phosphorus at all. If this variety of pig were adopted widely, It could greatly reduce a major source of pollution. But the Enviropig, as they call it, is the product of genetic modification--which is anathema to many Westerners. The Enviropig is one of many new technologies that are putting environmentalists and organic-food supporters in _ : should they remain categorically opposed to genetically modified (GM)foods even at the expense of the environment? Elsewhere, trees grown for paper could be made amenable to much more efficient processing, reducing both energy usage and toxic chemical bleach in waste water from paper mills. The most significant GM applications will be ones that help lessen the problem of agriculture , which accounts for 38percent of the world's landmass and is crowding out natural ecosystems and species habitats. Chances are, farmers will... Question: What is the best title of the passage? - How to Raise Pigs - Whether to choose the GM Foods - What's GM Foods - The Pollution Brought by Pigs
Whether to choose the GM Foods

Q: Read the following article and select the best answer. Article: Not willing to pay $400 for a basic room or upwards of $1,200 for a suite at a luxury hotel? We hear you. In the past, this meant having to put up with cheap hotels. Essentially, you got what you paid for. But all that's changed, as mid-level hotels have begun competing for a population that travels more then ever. Even in New York and San Francisco --- two of the most expensive cities in the country --- one can find comfortable, affordable options with much modern conveniences. We searched the country for the best hotels under $150. Hotel 340 St. Paul, Minnesota, USA This twelve-storey English-renaissance building once served as a downtown clubhouse for St. Paul's outstanding people; today, the repaired structure houses the hotel on the top three floors. Its 35 rooms stand out for hardwood floors, marble showers and nice views of the Mississippi River, and room comforts include iPod docks , free local and national telephone calls and coffee makers. The University Club of St. Paul, a grand hall bar, and an all-new-60,000-square-foot fitness center(free for guests)also share space in the building. Marina Inn San Francisco, California, USA Located in the Marina district, where the streets are lined with luxury stores and great restaurants, the Marina Inn is the ideal place for business or pleasure. Few destinations offer the quality and variety of environment, scenery, entertainment, accommodation, and dining that waits for you here at the Marina Inn. It's a ten-minute walk to Fisherman's Wharf and there are abundant bus connections to take you anywhere in the city. Hotel Havana San Antonio, Texas, USA When one thinks of his historic Texas town, usually the southwest comes to mind. So does Mexico. Since 1914, the hotel has served passers-by. The 27 rooms come in all shapes and sizes, many of which include Turkish carpets and elegant Cuban art on the walls. Bathrooms are distinguished with Red Flower body care products. Question: If you go to New York on business now, _ . - you have no choice but to choose luxury hotels - you can live comfortably with less money - you have to seek for the cheapest hotel - you may spend a lot of money for conveniences
A: you can live comfortably with less money

Q: Read the following article and select the best answer. Article: Dogs have long been used to find explosives and drugs.Now,a new study shows that man's best friend can also help to find lung and breast cancer,researchers report in integrative Cancer Therapies.The findings show that trained ordinary household dogs can detect early--stage lung and breast cancers by smelling the breath samples of patients. Researchers have found that cancer cells send out molecules different from those of healthy ones,and that might be sensed by smell by the highly sensitive dog's nose. For the study,five dogs were trained by a professional instructor to respond differently to breath samples of healthy and cancer patients."The dogs learned to sit or lie down in front of cancer patient samples and to ignore control samples through the method of food reward," McCulloch explained. After a period of training,researchers tested the animals'ability to distinguish cancer patients from controls.The animals were given breath samples from 55 patients with lung cancer,3 1 with breast cancer and 83 healthy controls who were not included in the original training period. McCulloch's group found that the dogs were able to correctly distinguish the breath samples of cancer patients from those of the control subjects in about 90 percent of the cases.The dogs were also able to detecting early-stage lung and breast cancers. "These results show that there is hope for early detection,"McCulloch said.The re-searches are planning to conduct further studies on the breath composition of cancer patients to possibly design an electronic device that can do the dogs'job."A dog's nose is so powerful it can detect odors 10 000 to 100 000 times better than a human nose can.I hope people will be interested in doing this research,"McCulloch added,"It shows that there is definitely something out there." Question: Which of the following would be the best title? - Special Noses of Dogs - Dogs and Cancer - Dogs Smell Signs of Cancer - McCulloch'S New Discovery
A: Dogs Smell Signs of Cancer