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限时测试(15) 专题特训(阅读理解——主旨大意) 体裁：说明文 话题：生态旅游 时间：6分钟 (the study of systems of living things) and tourism.The International Ecotourism Society defines ecotourism as “responsible travel to natural areas that conserves the environment and improves the well－being of the local people.”Actually－off places of great natural beauty way.It's big business，and the attraction of money can cause people to think about profits first.While ecotourism offers benefits for people and ecosystems，it leaves ecosystems open to negative effects，too. Costa Rica，once a Spanish colony，and independent since 1821，has an ecotourism industry worth over one billion dollars yearly，and thousands of jobs have been created.Nearly 21 percent of the land is now protected national parks，largely thanks to ecotourism.Nonetheless，due to the number of people visiting the country's natural places，some damage to the ecosystem has occurred. While tourists can have a negative influence on ecosystems，the same areas might have been totally destroyed by industries such as farming，logging，or mining were there no ecotourism industry.Instead，nature reserves have been created，keeping the ecosystem protected.And，by visiting beautiful rainforests and seeing rare animals，visitors get a sense of their value，and of gratitude for them.Tour guides can also be educators who train people to love and care for the environment.Visitors can take these lessons with them to their home countries. | 
