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Kenyan Researchers Developing Malaria Vaccine 肯尼亚研究人员开发疟疾疫苗 Malaria control efforts depend mainly on things like chemically-treated mosquito nets and sprays designed to kill the disease-carrying insects. But scientists in Ke
2014年VOA慢速英语(十一)月
This is the VOA Special English Development Report. Scientists say they have made more progress in developing malaria-resistant mosquitoes. The idea is to release genetically engineered insects like these into mosquito populations as a way to control
VOA慢速英语2007年（七）月
By Efam Dovi Accra 25 April 2007 Progress has been made in reducing malaria cases in Ghana, but the disease continues to be a primary health concern in the country as well as an economic burden. As the West African nation joins the rest of the contin
2007年VOA标准英语（四月）
Drug-Resistant Malaria Threatens Effort to Control Disease The biggest fear is the resistance will spread across Southeast Asia and then spill over into Africa, where the vast majority of the 700,000 deaths a year [from malaria] occur. Historically,
VOA标准英语2012年(四月)
Key Sentences(重点句子) 860．I wonder whether you are getting bored dealing with such petty cash transaction. 我想你对处理这样的零用现金交易不烦吗？ 861．As a secretary, he or she is expected to keep the office cash transacti
实用英语
Spraying Insecticide Indoors Reduces Spread of Malaria Researchers in West Africa have shown that spraying insecticide indoors can dramatically reduce malaria transmission. Efforts to develop a malaria vaccine have so far been disappointing, so progr
VOA标准英语2011年(十月)