单词：higher effective and lower toxic pesticide
单词：higher effective and lower toxic pesticide 相关文章
Pre-Listening Vocabulary caffeine: a drug found in some plants, including coffee seeds and tea leaves pesticide: a substance that keeps insects or harmful materials away from a plant alert: awake and paying attention ward off: to keep away something
趣谈英语
Scientists in Poland Work to Save Honeybees 科学家在波兰致力于拯救蜜蜂 Honeybees are in danger worldwide. Their homes -- known as colonies -- are suffering from what scientists call Colony Collapse Disorder. Scientists have linked the di
2016年VOA慢速英语(八)月
EU Hopes Pesticide Ban Will Halt Bee Decline The targeted farm chemicals, which will be banned for two years starting this December 1, belong to a class of insecticides called neonicotinoids. They are a type of insect nerve agent that has been widely
VOA标准英语2013年(五月)
泰国农产品安全令人担忧 Thailand has long been recognized as a leading exporter of rice and other agricultural produce. But tests for pesticide residues are raising concerns about whether the food is safe. 长期以来，泰国是众所周知
VOA双语新闻 2012年10月
ECONOMICS REPORT - Lower Bond Prices Can Mean a Higher Return, but Also Risk By Mario Ritter Broadcast: Friday, May 20, 2005 I'm Gwen Outen with the VOA Special English Economics Report. Governments a
健康与经济
Efforts to curb access to the means to kill oneself can help, too. 限制自杀途径也能有所帮助。 Suicide is surprisingly impulsive. 自杀通常都是意料之外的冲动所致。 A study of young Chinese women who had tried to kill themse
经济学人综合