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

发表于:2018-12-24 / 阅读(63) / 评论(0) 分类 2016年Scientific American(九)月

By Amanda Cassandra New York 31 July 2006 The music of Bach and Beethoven is heard all over the world, often in elegant and historical buildings. But in New York, classical music fans can listen in an unconventional music venue on the East River. Ba

发表于:2019-01-12 / 阅读(101) / 评论(0) 分类 2006年VOA标准英语(七月)

William Alexander details his year-long quest to bake the perfect loaf of bread in his book, '52 Loaves: One Man's Relentless Pursuit of Truth, Meaning and a Perfect Crust.' Few things in life are as simple or complex as bread. The same four essentia

发表于:2019-01-13 / 阅读(60) / 评论(0) 分类 VOA标准英语2010年(七)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

发表于:2019-01-19 / 阅读(85) / 评论(0) 分类 英语新闻

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

发表于:2019-01-20 / 阅读(69) / 评论(0) 分类 2016年Scientific American(八)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

发表于:2019-02-21 / 阅读(75) / 评论(0) 分类 万物简史