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Researchers have identified a molecule that attracts an insect which carries citrus greening disease. 研究人员确认一种分子可吸引携带黄龙病病毒的昆虫。 This development is expected to help farmers control a disease that has des
发表于:2018-12-07 / 阅读(90) / 评论(0)
2017年VOA慢速英语(十二)月
2017年VOA慢速英语(十二)月
Educators integrate environmental action into lesson plans Shelley Schlender | Oakland, California 09 February 2010 Photo: Head-Royce School Head-Royce students grow organic vegetables as well as native plants and trees in the school's 370-square-met
发表于:2019-01-11 / 阅读(34) / 评论(0)
VOA标准英语2010年(二月)
VOA标准英语2010年(二月)
Today, March 12, is the 33rd Arbor Day in China, when the whole nation is involved in the planting campaign. Official statistics show that more than 189 million trees have been planted voluntarily by residents of Beijing over the past 30 years, makin
发表于:2019-01-19 / 阅读(36) / 评论(0)
英闻天下
英闻天下