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Read the following article and select the best answer. Article: Energy is very important in modern life. People use energy to run machines, heat and cool their homes, cook, give light, and transport people and products from place to place. Most energy comes from fossil fuels--petroleum, coal, and natural gas. However, burning fuels causes pollution. Also, if we don't find new kinds of energy, we will use up all the fossil fuels in the twenty-first century. Scientists are working hard to find other kinds of energy for the future. What might these sources of energy be? Energy from the wind All over the world, people use the power of the wind. It turns windmills and moves sailboats. It is a clean source of energy, and there is lots of it. Unfortunately, if the wind does not blow, there is no wind energy. Energy from water When water moves from a high place to a lower place, it makes energy. This energy is used to create electricity. In Brittany, France, for example, waterpower produces enough energy to light a town of 40,000people. Waterpower gives energy without pollution. However, people have to build dams to use this energy. Dams cost a lot of money, so water energy is expensive. Energy from the earth There is heat in rocks under the earth. Scientists use this heat to make geothermal energy. San Francisco gets half of the energy it needs from geothermal power. This kind of energy is cheap, but it is possible only in a few places in the world. Energy from the sun Solar panels on the roofs of houses can turn energy from the sun into electricity. These panels can create enough energy to heat an entire house. Solar power is clean and there is a lot of it in sunny places. But when the weather is bad, there is no sunlight for energy. Question: What is the writer's opinion about the energy? - Try to use water energy more though it costs a lot. - Each natural energy has its own advantages and disadvantages. - Solar power is environmental. - Wind power is the cheapest but we can't get.
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Each natural energy has its own advantages and disadvantages.

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Read the following article and select the best answer. Article: As South Africa starts to celebrate 20 years of freedom in South Africa, the moment is ruined with disappointment for many of the nation's poorest, who feel change has been slow to come. Today thousands of people are expected to gather near Cape Town to celebrate the 20th anniversary of Nelson Mandela's release. The moment when Mr. Mandela, who was 71 and had spent 27 years in prison on Robben Island, walked free marked a change from apartheid to multi-racial democracy . He went on to become the country's first black president. His African National Congress (ANC) party has reduced poverty, built houses and delivered water, electricity and schools to blacks. Still, though, needs remain great. With some observers comparing the event to South Africa's equal of the fall of the Berlin Wall, the occasion has sparked debate about unhappy promises and riots among the nation's very poorest, who feel short-changed. Agnes Ntali shares her two-roomed Department of Housing in Soweto with three grandchildren. The 55-year-old widow, who first came to Soweto with her husband in the days after Nelson Mandela's release has been waiting 10 years to be re-housed. "We have stayed here for a long time now but nothing has changed. Now we are free but we are not happy... we have no jobs and we are hungry," she told The Times newspaper. "Since Mandela left, there have been no changes, " she said. Last week the "informal settlement" she shares with several hundred other very poor black South Africans, broke out into violence. Tired of unhappy promises to provide electricity and toilets, some people cut off the power to new council houses nearby. A riot started and the police responded with teargas and rubber bullets. Across the nation, black townships are exploding in violent protests about services they are still waiting for. It is a sign that the poor are prepared to wait no longer for the better life which was forecast 20 years ago, but has, for thousands, failed to appear. Question: What is the best title of the passage? - The Poor in South Africa Celebrate Mandela's Coming Back - The Poor in South Africa Face Broken Dreams on Mandela's Anniversary - All the People in South Africa Started a Strike against the Government - People in South Africa Help the Government Build a Bright Future
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The Poor in South Africa Face Broken Dreams on Mandela's Anniversary

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Read the following article and select the best answer. Article: Last spring, members of Alaska's Troop 34, based in Fairbanks, trudged out into the snowy wilderness to take part in their state's Take a Kid Trapping program. In many parts of the state, beavers are pests and need to be controlled. The 10-to-12-year-old girls found out where beavers lived, set traps, and skinned the two animals they caught. The girls hope to catch ten more beavers so that the entire troop can make mittens and hats with the fur. They also want to cook beaver meat. Troop leaders and members say the Scouts are doing a good deed by helping control the state's beaver population. But animal-rights activists say trapping is cruel. They want the Girl Scouts to stop in their tracks. Beavers aren't only causing a problem in Alaska. Residents in Sampson County, N.C., have turned to a local committee to help them battle the growing beaver population there. County landowners are frustrated after the county spent more than $ 50,000 in eight years trying to reduce the beaver population through a government program. The joint state and federal program included paying money to trappers for every beaver carcass they trapped. Many local residents say that the program didn't work because there were too few trappers. That's why the county set up its own committee to investigate other ways to control the area's beaver population. The county will rely on its own beaver-trapping program. It has hired a trapper to set traps in various areas. The county will pay $10 for every beaver carcass. Why do many people say that beavers are a nuisance? For beavers to survive, they need lots of water. Water provides the large rodent with a place to hide from meat - eating animals. Beavers also store food underwater for the winter. When there's not enough water in a particular area, beavers get busy building dams. Beaver dams can cause major flooding and damage to the surrounding countryside as the animals cut down trees to use in their construction projects. Beavers build canals to transport heavy objects. Question: Why does the troop hope to catch ten more beavers? - To fulfill their task. - To sell them for money. - To get enough fur. - To exchange them for mittens and hats.
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To get enough fur.