单词：persistent insecticide
单词：persistent insecticide 相关文章
Plans for Haiti's recovery from the devastating earthquake are on the agenda at the United Nations donors' conference, March 31 in New York. Among the country's top priorities are the estimated 600,000 people who fled the capital, Port-au-Prince, for
VOA标准英语2010年(三月)
This is the VOA Special English Agriculture Report. In two thousand eight, scientists reported on a study of cotton grown in six provinces in northern China. The study involved bollworms, a major threat to cotton farmers. It also involved Bt cotton,
2010年VOA慢速英语(五)月
It's bad enough that mosquitoes suck our blood, and sometimes pass on disease. But there's more. They can actually give you a disease and pee on you at the same time. Adding insult to injury if you will. Jerod Denton, a pharmacologist at Vanderbilt U
2016年Scientific American(十二)月
To Fight Malaria, Bed Nets Are the Most Important Weapon 蚊帐成为抗疟疾最重要的武器 From VOA Learning English, this is the Health Lifestyle report. United Nations researchers are reporting progress in the fight against the disease malari
2016年VOA慢速英语(十二)月
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)
How to get rid of procrastination? 如何摆脱拖延症？ Just take the first step. 只需迈出第一步。 When you start to look too far into the future any task or project can seem close to impossible. And so you shut down because you become ov
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