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高高的沙丘上,一位耄耋老人拉着自己的曾孙子,蹒跚着行进,细细的沙子上,留下了这一老一少歪歪扭扭的两串脚印(见右下图)。老人叫郭成旺,今年７８岁,生活在我国大西北陕西省榆林地区靖边县的东坑乡毛团村。精神矍铄,开朗豁达的郭老汉,对在沙漠上植树情有独钟,他１５年如一日,默
On a tall sand dune, an elderly man, dragging his great-grandson, staggered into the fine sand, leaving behind a series of old and young crooked twigs (see bottom right). The elderly, Guo Chengwang, is 78 years old and lives in Mao Tuncun, Dongkeng Township, in Jingbian County, Yulin, Shaanxi Province, in the vast northwest of our country. Inspired, cheerful and open-minded Guo old man, a soft spot for planting trees in the desert, his 15 years as a day, silent