【正确答案】
A
【答案解析】[听力原文] We hear it a lot in the news these days: 'Recycle newspapers and save a tree.' Protecting our delicate environment seems to be on the agenda of politicians, government leaders, and citizens in many parts of the world to show support for mother nature. Three essential keys needed to power this movement include a more informed public, the development of improved technology, and a greater demand for recycled materials. Let's use paper as an example. The first step is to raise public awareness about the recycling process, to explain the kinds of materials that can be recycled, and provide ways on how to properly dispose of them. Local governments should educate the public on how to properly sort reusable materials from those that can't be recycled. Then, a system of collecting these sorted materials needs to be established. The public interest might be there, but soon may wane if there isn't a system where they can take these materials to be recycled. Give the public information they can grasp, and then you will increase your chances of gaining followers. Second, technological progress has been made on many fronts, but governmental agencies need to step up their support for companies involved in recycling by providing tax incentives, low-cost loans, or even grants to upgrade equipment and to encourage further research. The final key is to increase demand for the growing surplus of resources waiting to be recycled. Recycling is a crucial link in protecting our planet. The three keys mentioned are important ways to achieve this end. What is the major topic for this passage? 本题是主旨题。文章开头提到，我们经常会在新闻中听到“回收报纸，保护树木”这样的话。接着提到保护环境的三个基本要素，即提高公民的知情权、开发先进的技术以及加大回收材料的需求度。然后接下来的部分都围绕着回收物品的关键要素展开，由此可知，本题选A。其他选项过于片面，故排除。