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As you've probably experienced firsthand, some mosquito species have a real taste for warm, human blood. So much so that if you raise them on it the lab, they'll accept no substitute. Fortunately, I don't get major reactions at all. Brad Main is a mo
2016年Scientific American(九)月
By Caroline Sawyer Nairobi 17 August 2007 A United Nations agency report says 600,000 people in southern Somalia, including people in and around the capital Mogadishu, are suffering from severe malnutrition and nearly 300,000 of those require immedia
2007年VOA标准英语（八月）
ROME, Dec. 3 (Xinhua) -- Italy lacks the necessary energy(能量,活力) and strength for an economic revival while unemployment and poverty are on the rise, warned a report issued Friday. The 44th edition of the Censis think tank social survey, the
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In Africa's battle against malaria, two low-tech tacticsinsecticides and bed netshave done a decent job killing off mosquitoes. But it's mainly one species that's been affected. That's a species called Anopheles gambiae, sometimes called the African
2016年Scientific American(八)月
Sam Worthington as Perseus in Clash of the Titans Hollywood has rediscovered ancient Greek mythology with its gods and monsters, muscular men with shields and swords and the hero's quest to save humanity in the 2010 version of Clash of the Titans: Wi
VOA标准英语2010年(四)月
You might not think there would be that many people in the world prepared to devote lifetimes to the study of something so inescapably low key, 你或许会认为，世界上不会有多少人愿意花毕生的心血来研究那个不起眼儿的东西
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