In recent years, with the fact that industry and commerce's swiftness and violence develops,in the city, trees's quantity reduces greatly. Has already, people made various make great efforts to prevent trees from being felled, but has also ought to know the significance to planting trees in and around the city. Plant trees in and around the city bringing about much benefit: Purify air , beautify a city , provide wood. Appeal for people: Know the urban afforestation contribution to the urban environment , plant trees and protect them from being infringed upon by commerce
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三年级英语辅导 更新