单选题 Passage Two
Questions 29 to 32 are based on the passage you have just heard.
单选题
  • A. A farmland to plant vegetables.
  • B. A glass building to grow plants.
  • C. An environment less harmful to some plants.
  • D. A structure to build glasses.
【正确答案】 B
【答案解析】[解析] 29-32 Most people think of a greenhouse as a special glass structure used to grow plants all year long. Now the word has a quite different meaning. A greenhouse is less harmful to the environment than other houses. Greenhouses are designed to be sustainable. They provide people today with what they need and they don't use up or damage the natural resources needed in the future. For years, architects in many areas of the world have designed and built them for environmental activists. However, rapidly rising energy costs are increasing the demand worldwide for houses that use less energy and other resources. Scientists have pointed out that there are some rules to achieve sustainability. The first and the most important is to stop depending on energy from fossil fuels. Instead, green buildings use the sun's energy as much as possible for heat and power. The second rule is to make sure the air inside a home is healthy and clean. And the third one is to use the land responsibly. Build smaller houses and keep as much natural land as possible around them. In many American cities, there are new stores that sell parts of old houses and other buildings. The materials are sold at low cost. People re-use them in their homes or businesses. This helps the environment because something new does not have to be manufactured and the old materials don't have to be buried or destroyed. As one storekeeper says, "I believe that re-using materials is the greenest thing you can do. " 29. In the opinion of most people, what does a greenhouse probably stand for?
单选题
  • A. Rising energy costs are increasing the demand for greenhouses.
  • B. The houses they build may use up the natural resources.
  • C. Environmental activists need more greenhouses.
  • D. The materials they use in building may damage the environment.
【正确答案】 A
【答案解析】[解析] According to the passage, what is the problem the architects are facing?
单选题
  • A. Ensuring healthy air inside a home.
  • B. Utilizing the land responsibly.
  • C. Changing the energy resources for heat and power.
  • D. Using less fossil fuel both at home and at work.
【正确答案】 D
【答案解析】[解析] According to the scientists, what is the most important rule to achieve sustainability?
单选题
  • A. People should sell the materials of old houses at low cost.
  • B. People should destroy and bury the materials of the old buildings.
  • C. People should consider re-using as a way of life.
  • D. People should build fewer houses uSing fossil fuel.
【正确答案】 C
【答案解析】[解析] What does the storekeeper's word mean at the end of the passage?