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Part I
Zhao: So what is the purpose of “Earth Day”，how did it get started and what exactly has it accomplished?
史密斯:“地球日”是1970年开始的，0的是提高公众的环保意识。一则是这一活动可以提醒人们耍细心照看好我们的地球，冋时也使特別利益闭体和环保组织有机会动 员自己的成员在各自社区釆取行动。
Zhao: That all sounds nice. But compared with progress made in environmental protection, nothing seems to have changed in population explosion, ozone depletion, global warming and that sort of thing. Let’s face it, the more people on the earth, the more resources will be used up and the more waste there will be. What are we going to do if we run out of land for food? We must not take the issue lightly.
你说的很对。到2005年，地球人口将达70亿。我个人认为解决上述问题的方法在废品回收利用。纸张，金属，橡胶，油料，以及许多物资都必须在史人程度上 冋收利用。每个人都要参与。也许还耑要特别立法。我们的确正在冈建房筑路失去千百万公顷的土地，但未幵发的土地还不少，可以用来种植农作物或建房。科学技术能帮我们从农田取得更大的收获。
Zhao: So what are you going to do for Earth Day this year?
史密斯: 我也许会参加市里举办的“地球日”纪念大会，然后帮忙清扫成山的垃圾。
