专业英语课程考试试卷专业英课程考试试卷专业英语课程考试试卷专业英语课程考试试卷.doc

专业英语课程考试试卷 A卷 姓名 学号 班级 得分 考生请注意：请将答案写在答题纸上，写在试卷上一律无效。考试完毕请将试卷和答题纸一并交上，不得将试卷带出考场。 READING MATERIAL A: Plastic are remarkably useful materials, but one of their greatest advantages over other materials, their durability, is also one of their greatest handicaps. They don’t disintegrate. Once we dump them into the environment, they just stay there. Some plastic seem to last forever. One way to keep discarded plastics from overwhelming us is to recycle them, to use them over and over again. But there are different kinds of plastics, and one sort doesnt mix well with another. To reuse plastics we have to separate one kind from another so that we can combine all compatible plastics into one group and reprocess them as a whole. One way to sort them is by taking advantage of differences in the densities of different kinds of plastics. If an era is known by the kinds of materials its people use to build the world they live in, then the Stone Age, the Bronze Age, and the Iron Age have given way to our own Plastic Age. Plastics form much of our packing and wrapping materials, many of our bottles and containers, textiles, plumbing and building materials, furniture and flooring, paints, glues and adhesives, electrical insulation, automobile parts and bodies, television, stereo and computer cabinets, medical equipment, video and audio tapes, records and compact disks, personal items including pens, razors, toothbrushes, and hairsprays, and even the plastic trash bags we use to discard our plastic trash, Except for our food, air, and water, almost every ordinary thing we come in contact with each day contains some kind of a plastic somewhere in, on, or around it. Or it comes to us wrapped in plastic. So many of our throwaway goods are made of plastic that, despite its lightness, the material currently makes up an estimated 7% of the total weight of all solid municipal wastes and is expected to grow to 10% by the year 2000. Whats more, plastics are a highly visible part