新四级试题样卷及答案(含听力录音材料)(1)大学英语四级考试试点考试样卷 (试题册) 新四级试题样卷及答案(含听力录音材料)Part Writing (30 minutes)注意：此部分试题在答题卡1上。 Part Reading Comprehension (Skimming and Scanning) ( minutes) Directions: In this part, you will have minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, mark Y (for YES) if the statement agrees with the information given in the passage; N (for NO) if the statement contradicts the information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. For questions 8-, complete the sentences with the information given in the passage. Landfills You have just finished your meal at a fast food restaurant and you throw your uneaten food, food wrappers, drink cups, utensils and napkins into the trash can. You dont think about that waste again. On trash pickup day in your neighborhood, you push your can out to the curb, and workers dump the contents into a big truck and haul it away. You dont have to think about that waste again, either. But maybe you have wondered, as you watch the trash truck pull away, just where that garbage ends up. Americans generate trash at an Astonishing rate of four pounds per day per person; which translates to 600,000 tons per day or 2 million tons per year! This is almost twice as much trash per person as most other major countries. What happens to this trash? Some gets recycled (回收利用) or recovered and some is burned, but the majority is buried in landfills. How Much Trash Is Generated? Of the 2 million tons of trash, or solid waste, generated in the United States annually, about 56 million tons, or 27 percent, is either recycled (glass, paper products, plastic, metals) or composted (做成堆肥) (yard waste). The remaining trash, which is mostly unrecyclable, is discarded. How Is Trash Disposed of ? The trash production in the United States has almost tripled since 60. This trash is handled in various ways. About 27 percent of the trash is recycled or composted, percent is burned and 57 percent is buried in landfills. The amount of trash buried in landfills has doubled since 60. The United States ranks somewhere in the middle of the major countries (United Kingdom, Canada, Germany, France and Japan) in landfill disposal. The United Kingdom ranks highest, burying about 90 percent of its solid waste in landfills. What Is a Landfill? There are two ways to bury trash: n Dumpan open hole in the ground where trash is buried and that is full of various animals (rats, mice, birds). (This is most peoples idea of a landfill!) n Landfillcarefully designed structure built into or on top of the ground in which trash is isolated from the surrounding environment (groundwater, air, rain). This isolation is accomplished with a bottom liner and daily covering of soil. Sanitary landfillland fill that uses a clay liner to isolate the trash from the environment Municipal solid waste (MSW) landfilllandfill that uses a synthetic (plastic) liner to isolate the trash from the environment The purpose of a landfill is to bury the trash in such a way that it will be isolated from groundwater, will be kept dry and will not be in contact with air. Under these conditions, trash will not decompose (腐烂) much. A landfill is not like a compost pile, where the purpose is to bury trash in such a way that it will decompose quickly. Proposing the Landfill For a landfill to be built, the operators have to make sure that they follow certain steps. In most parts of the world, there are regulations that govern where a landfill can be placed and how it can operate. The whole process begins with someone proposing the landfill. In the United States, taking care of trash and building landfills are local government responsibilities. Before a city or other authority can build a landfill, an environment impact study must be done on the proposed site to determine: n the area of land necessary for the landfill n the composition of the underlying soil and bedrock n the flow of surface water over the site n the impact of the proposed landfill on the local environment and wildlife n the historical value of the proposed site Building the Landfill Once the environmental impact study is complete, the permits are granted and the funds have been raised, then construction begins. First, access roads to the landfill site must be built if they do not already exist. There roads will be used by construction equipment, sanitation (环卫) services and the general public. After roads have been built, digging can begin. In the North Wake Country Landfill, the landfill began feet below the road surface. What Happens to Trash in a Landfill? Trash put in a landfill will stay there for a very long time. Inside a landfill, there is little oxygen and little moisture. Under these conditions, trash does not break down very rapidly. In fact, when old landfills have been dug up or sampled, 40-year-old