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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
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
By Katherine Cole Washington 16 December 2006 Multi-instrumentalist Sam Bush has been taking his music beyond the boundaries of traditional bluegrass for almost 35 years. As a founding member of the New Grass Revival, Sam pioneered a whole new direc
2006年VOA标准英语（十二月）
It was spring, 1887. Eleanor Roosevelt was almost three years old. She was very excited. She was going to cross the Atlantic Ocean on a great ship, the Britannica. Her father, whom Eleanor adored, had told her about the different countries that the f
名人认知系列 Who Was
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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